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1. A highly sensitive and rapid LC-MS/MS method for quantification of bexarotene in mouse plasma and brain tissue: Application to mice pharmacokinetic study

Author:
Huimei Fu; Lijuan Chu; He Jiao; Longyi Lin; Youping Liu; Guoliang Chen; Libo Zou; Xin Wang; Xin Di
Source:
Journal of chromatography 2022 v.1189 pp. 123025
ISSN:
1570-0232
Subject:
Alzheimer disease; acetates; acetic acid; antineoplastic agents; brain; electrospray ionization mass spectrometry; half life; liquid chromatography; methanol; mice; pH; pharmacokinetics; rapid methods; skin neoplasms; tandem mass spectrometry
Abstract:
... Emerging evidence has suggested that bexarotene, a nearly 20-year-old skin cancer drug, may be a potential drug candidate to treat Alzheimer's disease (AD) and other neurodegenerative disorders. As described in this study, a highly sensitive and rapid method, using liquid chromatography–tandem mass spectrometry (LC–MS/MS) to determine bexarotene in mouse plasma and brain tissue, was established an ...
DOI:
10.1016/j.jchromb.2021.123025

2. A simple and green method for determination of ethanol in liquors by the conductivity measurement of the uncatalyzed esterification reaction

Author:
Titikan Somboon; Ratchanee Phatchana; Wimonrat Tongpoothorn; Sira Sansuk
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.154 pp. 112593
ISSN:
0023-6438
Subject:
acetates; acetic acid; dissociation; electrical conductivity; esterification; ethanol; hydrogen
Abstract:
... A simple and green procedure for quantifying the ethanol concentration based on the conductometric method and the uncatalyzed esterification reaction was demonstrated. The reaction progress between ethanol and acetic acid was followed by detecting the electrical conductivity, corresponding to the amount of hydrogen ion and acetate anion from acetic acid dissociation. By fixing the concentration of ...
DOI:
10.1016/j.lwt.2021.112593

3. A strategy for food waste-to-biofuels: Co-production of gasoline alternatives from volatile fatty acids

Author:
Juyeon Kim; Hoyoung park; Jeehoon Han; Jechan Lee
Source:
Journal of cleaner production 2022 v.348 pp. 131408
ISSN:
0959-6526
Subject:
acetates; acetic acid; anaerobic digestion; butanol; butyric acid; economics; energy efficiency; ethanol; gasoline; heat; heat exchangers; liquids; organic wastes; simulation models
Abstract:
... Volatile fatty acids (VFA), byproducts of anaerobic digestion of organic waste, have emerged as a platform molecule for the production of liquid fuels and chemicals. This study reports a co-production process that allows the conversion of VFAs into promising gasoline alternatives: acetic acid to ethanol (EtOH) via methyl acetate and butyric acid to butanol (BuOH) via methyl butyrate. The effect of ...
DOI:
10.1016/j.jclepro.2022.131408

4. Acylation of m-cresol with acetic acid supported by in-situ ester formation on H-ZSM-5 zeolites

Author:
Han K. Chau; Daniel E. Resasco; Phuong Do; Steven P. Crossley
Source:
Journal of catalysis 2022 v.406 pp. 48-55
ISSN:
0021-9517
Subject:
acetates; acetic acid; acetophenones; active sites; acylation; catalysts; catalytic activity; esterification; feedstocks; kinetics; partial pressure; reaction kinetics; solvents; vapors; zeolites
Abstract:
... Friedel-Crafts acylation of phenolic compounds with carboxylic acids catalyzed by Brønsted-acid zeolites is an interesting reaction that could find application in the production of fuels and chemicals from renewable feedstocks. The mechanism of direct acylation of m-cresol with acetic acid over protonic zeolites and the role that the confining environment may have on reaction rate and product sele ...
DOI:
10.1016/j.jcat.2021.12.020

5. Biomass of a Psychrophilic Fungus as a Biocatalyst for Efficient Direct Esterification of Citronellol

Author:
Mateusz Kutyła; Mariusz Trytek; Katarzyna Buczek; Ewa Tomaszewska; Siemowit Muszyński
Source:
BioEnergy research 2022 v.15 no.1 pp. 399-411
ISSN:
1939-1234
Subject:
Pseudogymnoascus pannorum; acetates; acetic acid; adverse effects; biocatalysts; bioenergy; biomass; biosynthesis; calcium carbonate; carboxylic ester hydrolases; catalytic activity; citronellol; culture media; energy; esterification; hexane; mycelium; olive oil; psychrophilic fungi; research; solvents; temperature
Abstract:
... A biomass-bound lipase from psychrophilic Chrysosporium pannorum A-1 is an efficient biocatalyst for direct esterification of β-citronellol and acetic acid in an organic solvent. The biomass is effectively produced by fungal submerged culture at 20 ℃, which results in lower energy consumption during the production of biocatalyst. Supplementation of the culture medium with calcium carbonate togethe ...
DOI:
10.1007/s12155-021-10289-x

6. Characterization of the Berry Quality Traits and Metabolites of ‘Beimei’ Interspecific Hybrid Wine Grapes during Berry Development and Winemaking

Author:
Yangfu Kuang; Chong Ren; Yi Wang; Gathunga Elias Kirabi; Yongjian Wang; Lijun Wang; Peige Fan; Zhenchang Liang
Source:
Horticulturae 2022 v.8 no.6 pp. -
ISSN:
2311-7524
Subject:
Vitis vinifera; acetates; acetic acid; climate; cold; fermentation; hybrids; metabolites; odors; phenylethyl alcohol; resveratrol; sugars; wine grapes; wine industry; winemaking; wines; China
Abstract:
... The development of grape varieties with cold resistance can be an advantage for the wine industry. ‘Beimei’, an interspecific hybrid wine grape variety with cold resistance and pleasant rose aroma, is now extensively cultivated in China. In the present study, the berry quality traits and metabolites of ‘Beimei’ and other “Bei” varieties were characterized. The sugar (234 g/L–391 g/L) and acid (6.2 ...
DOI:
10.3390/horticulturae8060516

7. Characterization of the flavor and nutritional value of coconut water vinegar based on metabolomics

Author:
Senzheng Xu; Zewei Ma; Ying Chen; Jiaxin Li; Haiyan Jiang; Taiqi Qu; Weimin Zhang; Congfa Li; Sixin Liu
Source:
Food chemistry 2022 v.369 pp. 130872
ISSN:
0308-8146
Subject:
acetates; acetic acid; almonds; aspartic acid; bananas; benzaldehyde; coconut water; coconuts; flavor; food chemistry; food industry; glutamic acid; liquid state fermentation; metabolomics; nutrition; nutritive value; odors; phenylalanine; pyruvic acid; raw materials; sensory evaluation; vinegars; wastes
Abstract:
... Tender Coconut water is popular for its deliciousness and nutrition. Mature coconut water, usually discarded as waste in the coconut kernel-based food industry due to its unpleasant flavor, was used as a raw material to make vinegar by liquid-state fermentation. The compounds in fresh coconut water with high odor activity values (OAVs) were isovaleric acid and acetic acid, with pungent sour tastes ...
DOI:
10.1016/j.foodchem.2021.130872

8. Clonal selection of wine yeasts with differential adsorption activities towards phenolics and ochratoxin A

Author:
Andrea Caridi; Rossana Sidari; Andrea Pulvirenti; Giuseppe Blaiotta; Alberto Ritieni
Source:
Food biotechnology 2022 v.36 no.1 pp. 22-37
ISSN:
1532-4249
Subject:
Saccharomyces cerevisiae; acetates; acetic acid; adsorption; agar; chalk; diploidy; fermentation; food biotechnology; grape must; ochratoxin A; phenolic compounds; spores; winemaking
Abstract:
... To design a rapid, simple, and low-cost procedure for yeast selection with differential adsorption activities toward phenolics and ochratoxin A, 284 yeast strains were screened. This was done by evaluating the type of growth during grape must fermentation, acetic acid production on Chalk agar, H₂S production on BiGGY agar, and spore-formation on acetate agar. After that initial step, 84 strains we ...
DOI:
10.1080/08905436.2021.2006064

9. Collaborative peer validation of a harmonized SPME-GC-MS method for analysis of selected volatile compounds in virgin olive oils

Author:
Ramón Aparicio-Ruiz; Clemente Ortiz Romero; Enrico Casadei; Diego L. García-González; Maurizio Servili; Roberto Selvaggini; Florence Lacoste; Julien Escobessa; Stefania Vichi; Beatriz Quintanilla-Casas; Pierre-Alain Golay; Paolo Lucci; Erica Moret; Enrico Valli; Alessandra Bendini; Tullia Gallina Toschi
Source:
Food control 2022 v.135 pp. 108756
ISSN:
0956-7135
Subject:
acetates; acetic acid; calibration; food safety; odors; olives; sensory evaluation; standard deviation; virgin olive oil
Abstract:
... The requirement for developing an instrumental method for analysis of volatile compounds responsible for the aroma that supports the work of the sensory panel test of virgin olive oils is a matter of great importance. In this paper, five laboratories participated in a collaborative study within the EU H2020 OLEUM project to develop a peer interlaboratory study of a harmonized SPME-GC-MS method for ...
DOI:
10.1016/j.foodcont.2021.108756

10. Combined roles of exporters in acetic acid tolerance in Saccharomyces cerevisiae

Author:
Xiaohuan Zhang; Jeroen G. Nijland; Arnold J. M. Driessen
Source:
Biotechnology for biofuels and bioproducts 2022 v.15 no.1 pp. 67
ISSN:
2731-3654
Subject:
Saccharomyces cerevisiae; acetates; acetic acid; acid tolerance; alcoholic fermentation; bioethanol; biomass; biotechnology; ethanol; feedstocks; growth inhibitors; lignocellulose; secretion; sugars; transcription (genetics)
Abstract:
... Acetic acid is a growth inhibitor generated during alcoholic fermentation and pretreatment of lignocellulosic biomass, a major feedstock to produce bioethanol. An understanding of the acetic acid tolerance mechanisms is pivotal for the industrial production of bioethanol. One of the mechanisms for acetic acid tolerance is transporter-mediated secretion where individual transporters have been impli ...
DOI:
10.1186/s13068-022-02164-4

11. Dynamics and correlation of microbial communities and metabolic compounds in doenjang-meju, a Korean traditional soybean brick

Author:
Hyung Min Kim; Dong Min Han; Ju Hye Baek; Byung Hee Chun; Che Ok Jeon
Source:
Food research international 2022 v.155 pp. 111085
ISSN:
0963-9969
Subject:
Aspergillus; Enterococcus; acetates; acetic acid; acetoin; bricks; butanol; butyric acid; cadaverine; carbon; fermentation; flavonoids; food research; fructose; glucose; glycerol; histamine; lactic acid; metabolites; principal component analysis; putrescine; soybeans; tyramine; volatile compounds
Abstract:
... To investigate the general fermentation characteristics of doenjang-meju (a Korean traditional soybean brick), they were periodically collected from eight different manufacturers during all fermentation stages, and their microbial communities and metabolic compounds (metabolites and volatile compounds) were analyzed. Bacillus and/or lactic acid bacteria (LAB, mainly Enterococcus) and Aspergillus w ...
DOI:
10.1016/j.foodres.2022.111085

12. Effect of ammonium acetate on alcohol fermentation in cassava-alcohol fermentation process

Author:
Xinchao Yang; Jiadong Huang; Yuling Yang; Chunjiang Ye; Yuanxiu Wang; Yuehui Liu; Fang Wang; Naxin Sun; Weiping Yu
Source:
Microbiological research 2022 v.256 pp. 126868
ISSN:
0944-5013
Subject:
acetates; acetic acid; alcoholic fermentation; ammonium acetate; ammonium carbonate; ammonium chloride; ammonium sulfate; byproducts; cassava; ethanol; experimental design; glycerol; nitrogen; pH; research; urea; weight loss
Abstract:
... The cassava-alcohol fermentation process employing cassava requires nitrogen source to maximize yields by a commercial strain of S. cerevisiae TG1348. In this study, a factorial experimental design was used to assess a suitable nitrogen source for growth and fermentative performance of S. cerevisiae in cassava-ethanol fermentation. The alcohol fermentation time was about 39 h for urea and ammonium ...
DOI:
10.1016/j.micres.2021.126868

13. Effects of different carbon sources on the efficiency of sulfur-oxidizing denitrifying microorganisms

Author:
Shuang Gao; Zhiling Li; Yanan Hou; Aijie Wang; Qian Liu; Cong Huang
Source:
Environmental research 2022 v.204 pp. 111946
ISSN:
0013-9351
Subject:
Arcobacter; Azoarcus; Pseudomonas; Thauera; acetates; acetic acid; biochemical pathways; chemical oxygen demand; denitrification; ethanol; genes; glucose; metabolism; nitrates; oxidation; research; sulfides; sulfur; total organic carbon
Abstract:
... This study aims to compare the effects of different carbon sources on sulfur-oxidizing denitrifying microorganisms by using glucose, ethanol, and acetate as carbon sources. Under the same chemical oxygen demand Cr (CODCᵣ), nitrate, and sulfide concentrations, the removal rate of nitrate and total organic carbon, and the yield of elemental sulfur in a static experiment and a continuous flow reactor ...
DOI:
10.1016/j.envres.2021.111946

14. Enhancing selenium and key flavor compounds contents in soy sauce using selenium-enriched soybean

Author:
Xianli Gao; Pei Shan; Tuo Feng; Lujun Zhang; Peng He; Junliang Ran; Jiangyan Fu; Cunshan Zhou
Source:
Journal of food composition and analysis 2022 v.106 pp. 104299
ISSN:
0889-1575
Subject:
Lactobacillus plantarum; Zygosaccharomyces rouxii; acetates; acetic acid; esterification; flavor; food composition; koji; peptides; proteinases; reproduction; selenium; soy sauce; soybeans
Abstract:
... Selenium (Se) deficiency has become a global health threat. Se-enriched soybean was utilized to develop a Se-enriched soy sauce (SeSS), and the effects of Se-enriched soybean on the flavor compounds in SeSS were characterized with HPLC and SPME–GC–olfactometry/MS. Results showed that the contents of total selenium (11.1-fold), organic selenium (10.6-fold), small peptides (≤1 kDa, 25.4 %), free ami ...
DOI:
10.1016/j.jfca.2021.104299

15. Enzymatic synthesis of geranyl acetate in batch and fed-batch reactors and evaluation of its larvicidal activity against Rhipicephalus (Boophilus) microplus

Author:
Daniela Remonatto; Rafaela Regina Fantatto; Rosemeire Cristina Linhari Rodrigues Pietro; Rubens Monti; J. Vladimir de Oliveira; Ariela Veloso de Paula; Juliana Cristina Bassan
Source:
Process biochemistry 2022 pp. -
ISSN:
1359-5113
Subject:
acaricidal properties; acaricides; acetates; acetic acid; carboxylic ester hydrolases; geraniol; larvicides; mortality; temperature; ticks
Abstract:
... Geraniol esters, such as geranyl acetate, are known to have antimicrobial and insect-repellent action, but their acaricidal activity has been little explored. This study aimed to investigate the solvent-free synthesis of geranyl acetate in batch (BSTR) and fed-batch (FBSTR) stirred tank reactors using the immobilized lipases NS 88011 and Novozym 435 and evaluate its larvicidal activity against the ...
DOI:
10.1016/j.procbio.2022.06.012

16. Experimental Voltammetry Analyzed Using Artificial Intelligence: Thermodynamics and Kinetics of the Dissociation of Acetic Acid in Aqueous Solution

Author:
Haotian Chen; Danlei Li; Enno Kätelhön; Ruiyang Miao; Richard G. Compton
Source:
Analytical chemistry 2022 v.94 no.15 pp. 5901-5908
ISSN:
1520-6882
Subject:
acetates; acetic acid; analytical chemistry; aqueous solutions; artificial intelligence; platinum; thermodynamics; voltammetry
Abstract:
... Artificial intelligence (AI) is used to quantitatively analyze the voltammetry of the reduction of acetic acid in aqueous solution generating thermodynamic and kinetic data. Specifically, the variation of the steady-state current for the reduction of protons at a platinum microelectrode as a function of the bulk concentration of acetic acid is recorded and analyzed giving data in close agreement w ...
DOI:
10.1021/acs.analchem.2c00110

17. Impact of Botrytis cinerea‐infected grapes on quality parameters of red wine made from withered grapes

Author:
J. Kelly; D. Inglis; L. Dowling; G. Pickering
Source:
Australian journal of grape and wine research 2022 v.28 no.3 pp. 439-449
ISSN:
1322-7130
Subject:
Botrytis cinerea; acetates; acetic acid; consumer preferences; fruits; gluconic acid; glycerol; grapes; hexanols; metabolites; odor compounds; red wines; research; sensory evaluation; sensory properties; yeasts; Ontario
Abstract:
... BACKGROUND AND AIMS: Modification of important odorants induced by Botrytis cinerea has been reported in dry red wine (Amarone) made from withered grapes, but the impact on wines produced in other regions remains to be elucidated. METHODS AND RESULTS: Cabernet Franc grapes from Ontario were dried to 28.0°Brix and fermented with either non‐botrytised grapes or a combination of non‐botrytised and bo ...
DOI:
10.1111/ajgw.12545

18. Initial pH-driven production of volatile fatty acid from hybrid Pennisetum

Author:
Tao Xing; Zhi Wang; Feng Zhen; Huiliang Liu; Defang Wo; Lianhua Li; Ying Guo; Xiaoying Kong; Yongming Sun
Source:
Bioresource technology 2022 v.347 pp. 126426
ISSN:
0960-8524
Subject:
Amphibacillus; Natronincola; Pennisetum; Tissierella; acetates; acetic acid; acetogens; dominant species; hybrids; hydrolysis; microbial communities; pH; technology; temperature; volatile fatty acids; xylan
Abstract:
... In this work, the impact of initial pH on the production of volatile fatty acids (VFAs) of hybrid Pennisetum was investigated. The batch experiments were conducted under six distinct beginning pH at a mesophilic temperature. Initial pH had an obvious effect on VFA yield and composition, and severe alkaline circumstances (pHᵢₙ = 11.0) could boost VFA production and acetic acid selectivity. The high ...
DOI:
10.1016/j.biortech.2021.126426

19. MultiConditionRT: Predicting liquid chromatography retention time for emerging contaminants for a wide range of eluent compositions and stationary phases

Author:
Amina Souihi; Miklos Peter Mohai; Emma Palm; Louise Malm; Anneli Kruve
Source:
Journal of chromatography 2022 v.1666 pp. 462867
ISSN:
0021-9673
Subject:
acetates; acetic acid; acetonitrile; algorithms; ammonia; bicarbonates; biphenyl; data collection; formates; formic acid; hydrophilic interaction chromatography; isotopes; mass spectrometry; methanol; pH; regression analysis; reversed-phase liquid chromatography
Abstract:
... Structural elucidation of compounds detected with liquid chromatography coupled to high resolution mass spectrometry is a challenging and time-consuming step in the workflow of non-targeted analysis and often requires manual validation of the results. Retention time, alongside exact mass, isotope pattern, fragmentation spectra, and collision cross-section, is valuable information for ruling out un ...
DOI:
10.1016/j.chroma.2022.462867

20. Pd(II)-Catalyzed Transient Directing Group-Assisted Regioselective Diverse C4–H Functionalizations of Indoles

Author:
Anurag Singh; Arnab Dey; Kuntal Pal; Om Prakash Dash; Chandra M. R. Volla
Source:
Organic letters 2022 v.24 no.10 pp. 1941-1946
ISSN:
1523-7052
Subject:
acetates; acetic acid; bromination; chlorination; indoles; oxidants; regioselectivity
Abstract:
... The development of a rational strategy for achieving site-selective C4–H halogenation of indoles is an appealing yet challenging task. Herein, we disclose a Pd(II)-catalyzed transient directing group (TDG)-assisted methodology for realizing C4 chlorination/bromination of indoles employing glycine as the TDG and NFSI as a bystanding oxidant. The use of inexpensive and commercially available CuX₂ as ...
DOI:
10.1021/acs.orglett.2c00320

21. Quantitative analysis of multi-components by single-marker: An effective method for the chemical characterization of wood vinegar

Author:
Liu Mengfan; Yao Jingjing; Zhang Chengliang; Hao Runqin; Zhang Zhongguo; Cao Wenbo
Source:
Industrial crops and products 2022 v.182 pp. 114862
ISSN:
0926-6690
Subject:
acetates; acetic acid; biomass; cost effectiveness; lignocellulose; pyrolysis; quantitative analysis; vinegars; volatile compounds; wood
Abstract:
... Wood vinegar is a complex mixture of organic compounds. QAMS is a relatively simple and cost-effective method which is used widely in recent years. In this study, quantitative analysis of multi-components by single-marker (QAMS) was applied to quantify the main volatile chemical components in wood vinegar for the first time. Using acetic acid as an internal reference compound, the relative correct ...
DOI:
10.1016/j.indcrop.2022.114862

22. Regional Variation of Chemical Characteristics in Young Marselan (Vitis vinifera L.) Red Wines from Five Regions of China

Author:
Yibin Lan; Min Liu; Xinke Zhang; Siyu Li; Ying Shi; Changqing Duan
Source:
Foods 2022 v.11 no.6 pp. -
ISSN:
2304-8158
Subject:
Vitis vinifera; acetates; acetic acid; basins; chemical composition; decanoic acid; discriminant analysis; fermentation; flavonols; flavor; gas chromatography-mass spectrometry; geraniol; octanoic acid; odors; sensory evaluation; China
Abstract:
... The environmental conditions of wine regions determine the flavor characteristics of wine. The characterization of the chemical composition and sensory profiles of young Marselan wines from five wine-producing regions in China was investigated by gas chromatography-mass spectrometry (MS), high-performance liquid chromatography–triple-quadrupole MS/MS and descriptive analysis. Young Marselan wines ...
DOI:
10.3390/foods11060787

23. Sewage sludge digestion beyond biogas: Electrochemical pretreatment for biochemicals

Author:
Qian Zeng; Feixiang Zan; Tianwei Hao; Samir Kumar Khanal; Guanghao Chen
Source:
Water research 2022 v.208 pp. 117839
ISSN:
0043-1354
Subject:
acetates; acetic acid; anaerobic digestion; biogas; community structure; electrochemistry; hydrolysis; methane production; microbial communities; oxidoreductases; pH; propionic acid; research; sewage sludge; volatile fatty acids; water
Abstract:
... Low economic gains from biogas drive research on shifting to volatile fatty acid (VFA) production during anaerobic sludge digestion. pH control and methanogenesis inhibition are widely used strategies for VFA production via anaerobic digestion of sludge. However, these strategies require perpetual dosing of chemicals, increasing cost and operation complexity. Here, we applied electrochemical pretr ...
DOI:
10.1016/j.watres.2021.117839

24. Stereoselective synthesis of novel bis-homoinositols with bicyclo[4.2.0]octane motifs

Author:
Ayşenur Zeren Barotcu; Abdullah Karanfil; Ertan Şahin; Latif Kelebekli
Source:
Carbohydrate research 2022 v.519 pp. 108611
ISSN:
0008-6215
Subject:
acetates; acetic acid; acetylation; carbohydrates; dust; oxidation; research; spectroscopy; stereoselective synthesis; thiourea; zinc
Abstract:
... Starting from cyclooctatetraene, bis-homoconduritols with cis-inositol and allo-inositol (or bicyclo[4.2.0]octane motif) structures were synthesized. Photooxygenation of trans-7,8-dibromo-bicyclo[4.2.0]octa-2,4-diene allowed the preparation of tricyclic endoperoxide. The compound diacetate was obtained by reduction of endoperoxide with thiourea followed by acetylation reaction. Removal of halides ...
DOI:
10.1016/j.carres.2022.108611

25. Transitioning from Ionic Liquids to Deep Eutectic Solvents

Author:
Huan Zhang; José Manuel Vicent-Luna; Shuxia Tao; Sofia Calero; Rafael J. Jiménez Riobóo; María Luisa Ferrer; Francisco del Monte; María Concepción Gutiérrez
Source:
ACS sustainable chemistry & engineering 2022 v.10 no.3 pp. 1232-1245
ISSN:
2168-0485
Subject:
acetates; acetic acid; chlorides; face; green chemistry; molecular dynamics; nuclear magnetic resonance spectroscopy; stoichiometry; viscosity
Abstract:
... Ionic liquids (ILs) and deep eutectic solvents (DESs) have been lately the solvents of choice in a number of processes because they offer a valid alternative to conventional solvents. Despite main interactions in ILs differ from those in DESs (e.g., electrostatic-type in the former and H-bond-type in the latter), these two neoteric solvents are more closely related that appeared and can be seen as ...
DOI:
10.1021/acssuschemeng.1c06999

26. A rapid, low-cost flocculation technology for enhanced microalgae harvesting

Author:
Arun Kumar Mehta; Saikat Chakraborty
Source:
Bioresource technology reports 2021 v.16 pp. 100856
ISSN:
2589-014X
Subject:
acetates; acetic acid; alum; ammonium chloride; biomass; carbon dioxide; commercialization; flocculation; gravity; hydrochloric acid; hydrogen; hydrolysis; microalgae; pH
Abstract:
... A rapid, low-cost, scalable flocculation technology, using either potash alum (for culture pH < 8.5), or potash alum with hydrochloric acid (for culture pH > 8.5), is employed to harvest algal biomass in less than thirty minutes. The gaseous CO₂ (0.04–5%) and acetic acid glacial added during mixotrophic cultivation produce hydrogen and acetate ions that react with hydrolysed potash alum to form ch ...
DOI:
10.1016/j.biteb.2021.100856

27. Acetate as substrate for L-malic acid production with Aspergillus oryzae DSM 1863

Author:
Aline Kövilein; Julia Umpfenbach; Katrin Ochsenreither
Source:
Biotechnology for biofuels 2021 v.14 no.1 pp. 48
ISSN:
1754-6834
Subject:
Aspergillus oryzae; acetates; acetic acid; acetogens; biofuels; biomass; biotechnology; byproducts; carbon; citric acid; fermentation; fossils; glucose; lignocellulose; malates; malic acid; pH; pyrolysis; synthesis gas
Abstract:
... BACKGROUND: Microbial malic acid production is currently not able to compete economically with well-established chemical processes using fossil resources. The utilization of inexpensive biomass-based substrates containing acetate could decrease production costs and promote the development of microbial processes. Acetate is a by-product in lignocellulosic hydrolysates and fast pyrolysis products or ...
DOI:
10.1186/s13068-021-01901-5

28. Acetic acid conversion to ketene on Cu2O(1 0 0): Reaction mechanism deduced from experimental observations and theoretical computations

Author:
H. Tissot; J. Halldin Stenlid; C. Wang; M. Panahi; S. Kaya; T. Brinck; Y. Sassa; F.O.L. Johansson; J. Weissenrieder
Source:
Journal of catalysis 2021 v.402 pp. 154-165
ISSN:
0021-9517
Subject:
X-ray photoelectron spectroscopy; acetates; acetic acid; adsorption; carbon dioxide; catalysts; catalytic activity; density functional theory; deprotonation; desorption; dissociation; energy; formates; formic acid; hydrogen; hydroxylation; oxygen; reaction mechanisms; temperature
Abstract:
... Ketene, a versatile reagent in production of fine and specialty chemicals, is produced from acetic acid. We investigate the synthesis of ketene from acetic acid over the (3,0;1,1) surface of Cu₂O(100) through analysis of the adsorption and desorption characteristics of formic and acetic acids. The results allow us to establish a reaction mechanism for ketene formation. Observations from x-ray phot ...
DOI:
10.1016/j.jcat.2021.08.022

29. Atmospheric insight into the reaction mechanism and kinetics of isopropenyl methyl ether (i-PME) initiated by OH radicals and subsequent oxidation of product radicals

Author:
Satyajit Dey Baruah; Ramesh Chandra Deka; Nand Kishor Gour; Subrata Paul
Source:
Environmental science and pollution research 2021 v.28 no.33 pp. 45646-45662
ISSN:
0944-1344
Subject:
acetates; acetic acid; density functional theory; formaldehyde; methyl ethers; oxidation; pollution; reaction mechanisms; research
Abstract:
... Studies on primary gas-phase reactions of emitted saturated and unsaturated ethers with oxidants and subsequent secondary reactions of product radicals with O₂ in the presence of NO are important in their atmospheric chemical processes. To accomplish these findings, we have examined the chemistry of OH-initiated oxidation of isopropenyl methyl ether (i-PME) CH₃C(CH₂)OCH₃ by electronic structure ca ...
DOI:
10.1007/s11356-021-13928-0

30. Baicalin inhibits APEC-induced lung injury by regulating gut microbiota and SCFA production

Author:
Lu-Yuan Peng; Hai-Tao Shi; Yue-Rong Tan; Si-Yang Shen; Peng-Fei Yi; Hai-Qing Shen; Ben-Dong Fu
Source:
Food & function 2021 v.12 no.24 pp. 12621-12633
ISSN:
2042-650X
Subject:
Escherichia coli; Scutellaria baicalensis; acetates; acetic acid; antibiotics; baicalin; birds; butyric acid; cytokines; digestive system; dysbiosis; free fatty acids; inflammation; intestinal microorganisms; lungs; propionic acid; protective effect; therapeutics
Abstract:
... Baicalin is a plant-derived flavonoid from Scutellaria baicalensis Georgi with multiple bioactivities and has a protective effect against avian pathogenic Escherichia coli (APEC) infection. However, the underlying mechanism of baicalin against APEC infection is still unknown. Therefore, we aimed to explore whether the protective effects and mechanisms of baicalin on APEC-induced lung inflammation ...
DOI:
10.1039/d1fo02407h

31. C/N Ratio and Specific Growth Rate Plays Important Role on Enhancing Isoprene Production in Recombinant Escherichia coli

Author:
Harshvardhan Joshi; Jasmine Isar; Dharmendra A. Jain; Sneh S. Badle; Shrikant B. Dhoot; Vidhya Rangaswamy
Source:
Applied biochemistry and biotechnology 2021 v.193 no.8 pp. 2403-2419
ISSN:
0273-2289
Subject:
Escherichia coli; acetates; acetic acid; bioreactors; biosynthesis; carbon; cell growth; equations; fermentation; isoprene; kinetics; phosphates; plasmids; specific growth rate
Abstract:
... Effect of fermentation parameters such as C/N ratio, specific growth rate, phosphate limitation, and plasmid instability on enhancing isoprene production is the focus of the current study. Isoprene productivity in the recombinant Escherichia coli K12_MVA strain showed a bell-shaped relationship with specific growth rate in bioreactor studies with isoprene volumetric productivity peaking at 0.35/h. ...
DOI:
10.1007/s12010-021-03545-5

32. Carbamazepine biodegradation and volatile fatty acids production by selectively enriched sulfate‐reducing bacteria and fermentative acidogenic bacteria

Author:
Khurram Tahir; Waheed Miran; Jiseon Jang; Asif Shahzad; Mokrema Moztahida; Bolam Kim; Seong‐Rin Lim; Dae Sung Lee
Source:
Journal of chemical technology and biotechnology 2021 v.96 no.3 pp. 592-602
ISSN:
0268-2575
Subject:
Clostridia; Desulfovibrio; Escherichia; acetates; acetic acid; biodegradation; biotechnology; butyric acid; chemical oxygen demand; microbial communities; pollutants; propionic acid; sulfates; total organic carbon; volatile fatty acids; wastewater treatment
Abstract:
... BACKGROUND: The micropollutant carbamazepine (CBZ) is persistent and resistant to conventional wastewater treatment. This study investigated the role of fermentative acidogenic bacteria (FAB) and sulfate‐reducing bacteria (SRB) for CBZ biodegradation and volatile fatty acid (VFA) production. RESULTS: The experimental results demonstrated that CBZ biodegradation, total organic carbon and sulfate re ...
DOI:
10.1002/jctb.6572

33. Combinational effects of acid and salt addition on colloidal, interfacial, and emulsifying properties of purified soybean oil bodies

Author:
Toya Ishii; Kentaro Matsumiya; Yasuki Matsumura
Source:
Food hydrocolloids 2021 v.111 pp. 106213
ISSN:
0268-005X
Subject:
acetates; acetic acid; adsorption; electrostatic interactions; emulsifiers; energy; hydrocolloids; lipid bodies; oil-water interface; pH; phosphates; soybean oil; soybeans; surface proteins; surface tension; viscoelasticity
Abstract:
... Soybean oil-storing organelles called oil bodies/oleosomes (OBs) are a potential eco-friendly plant-based emulsifier, whereas combinational effects of acid and salt addition on emulsifying properties of OBs were still unclear. This study aimed at investigating colloidal, interfacial, and emulsifying properties of OBs in the presence of acetic acid and NaCl. The purified OBs isolated from soybean s ...
DOI:
10.1016/j.foodhyd.2020.106213

34. Comparison of Sex Pheromone and Kairomone-Enhanced Pheromone Lures for Monitoring Oriental Fruit Moth (Lepidoptera:Tortricidae) in Mating Disruption and Non-Disruption Tree Fruit Orchards

Author:
James F. Walgenbach; Steven C. Schoof; Dolors Bosch; Lucia-Adriana Escudero-Colomar; Bill Lingren; Grzegorz Krawczyk
Source:
Environmental entomology 2021 v.50 no.5 pp. 1063-1074
ISSN:
0046-225X
Subject:
Grapholita molesta; acetates; acetic acid; entomology; females; moths; sex pheromones; tree fruits; Spain
Abstract:
... Oriental fruit moth, Grapholita molesta (Busck), populations were monitored using standard sex pheromone lures (OFM L2) and kairomone-enhanced lures to aid the interpretation of trap captures with enhanced relative to conventional lures. Initially, comparison of 10 different lures showed that a10X load of OFM pheromone, codlemone, terpinyl acetate, and acetic acid were key components of the most a ...
DOI:
10.1093/ee/nvab056

35. Comprehensive evaluation for the one-pot biosynthesis of butyl acetate by using microbial mono- and co-cultures

Author:
Yang Lv; Yujia Jiang; Jiasheng Lu; Hao Gao; Weiliang Dong; Jie Zhou; Wenming Zhang; Fengxue Xin; Min Jiang
Source:
Biotechnology for biofuels 2021 v.14 no.1 pp. 203
ISSN:
1754-6834
Subject:
Actinobacillus; Clostridium acetobutylicum; acetates; acetic acid; biofuels; biosynthesis; biotechnology; butanol; butyrates; coculture; cosmetics; fermentation; glucose; medicine; short chain fatty acids
Abstract:
... BACKGROUND: Butyl acetate has shown wide applications in food, cosmetics, medicine, and biofuel sectors. These short-chain fatty acid esters can be produced by either chemical or biological synthetic process with corresponding alcohols and acids. Currently, biosynthesis of short chain fatty acid esters, such as butyl butyrate, through microbial fermentation systems has been achieved; however, few ...
DOI:
10.1186/s13068-021-02053-2

36. Continuous H2/CO2 fermentation for acetic acid production under transient and continuous sulfide inhibition

Author:
Eleftheria Ntagia; Ioanna Chatzigiannidou; Jose M. Carvajal-Arroyo; Jan B.A. Arends; Korneel Rabaey
Source:
Chemosphere 2021 v.285 pp. 131536
ISSN:
0045-6535
Subject:
acetates; acetic acid; butyrates; carbon dioxide; electrolysis; fermentation; fermented foods; fermenters; methane production; microbial communities; mixed culture; phenotypic variation; species diversity; sulfides
Abstract:
... Waste gas fermentation powered by renewable H₂ is reaching kiloton scale. The presence of sulfide, inherent to many waste gases, can cause inhibition, requiring additional gas treatment. In this work, acetogenesis and methanogenesis inhibition by sulfide were studied in a 10-L mixed-culture fermenter, supplied with CO₂ and connected with a water electrolysis unit for electricity-powered H₂ supply. ...
DOI:
10.1016/j.chemosphere.2021.131536

37. Correlation between key aroma and manufacturing processes of rice-flavor baijiu and awamori, Chinese and Japanese traditional liquors

Author:
Zhe Zhao; Mina Sugimachi; Yumiko Yoshizaki; Xuan Yin; Xing-Lin Han; Kayu Okutsu; Taiki Futagami; Hisanori Tamaki; Kazunori Takamine
Source:
Food bioscience 2021 v.44 pp. 101375
ISSN:
2212-4292
Subject:
Aspergillus; Rhizopus oryzae; acetates; acetic acid; amino acid composition; citric acid; fatty acids; fermentation; flavor; koji; lactic acid; mash; octenol; odors; proteolysis; saccharification; sensory evaluation; yeasts
Abstract:
... In this study, we compared the flavor profiles Chinese rice-flavor baijiu and Japanese awamori—traditional liquors with similar manufacturing processes. Citric acid and lactic acid were the major acid constituents in the mash of awamori and rice-flavor baijiu, respectively. The amino acid content of awamori mash was greater than that of rice-flavor baijiu owing to the higher proteolytic activities ...
DOI:
10.1016/j.fbio.2021.101375

38. Coupling electronic nose with GC–MS improves flavor recognition and grade differentiation of Zhenjiang aromatic vinegar

Author:
Li Wang; Xingyi Huang; Chengquan Wang; Joshua Harrington Aheto; Xianhui Chang; Shanshan Yu; Xiaorui Zhang; Yu Wang
Source:
Journal of food process engineering 2021 v.44 no.10 pp. e13806
ISSN:
0145-8876
Subject:
acetates; acetic acid; amino acids; chemometrics; electronic nose; flavor; furfural; isobutyric acid; nitrogen; phenylacetic acid; phenylethyl alcohol; principal component analysis; pyrazines; spectrometers; sulfur; vinegars
Abstract:
... In this study, the flavor volatile profiles of five grades of Zhenjiang aromatic vinegar (ZAV) were compared using a gas chromatography‐mass spectrometer (GC–MS) and electronic nose (E‐nose). A total of 55 volatile compounds were identified, with 14 volatile compounds, including furfural, acetic acid, tetramethylpyrazine, phenethyl acetate, and phenylethyl alcohol, being identified as the key vola ...
DOI:
10.1111/jfpe.13806

39. Cyclohexene esterification–hydrogenation for efficient production of cyclohexanol

Author:
Yunfeng Zhu; Liang Gao; Langyou Wen; Baoning Zong; Hao Wang; Minghua Qiao
Source:
Green chemistry 2021 v.23 no.3 pp. 1185-1192
ISSN:
1463-9270
Subject:
acetates; acetic acid; activation energy; benzene; catalysts; catalytic activity; coprecipitation; cyclohexenes; esterification; green chemistry; hydrogenation; phenol; stoichiometry; temperature
Abstract:
... A novel process based on cyclohexene esterification–hydrogenation for the production of cyclohexanol, the key intermediate in the production of ε-caprolactam, was devised and validated for the first time. In this process, cyclohexene obtained from the partial hydrogenation of benzene is esterified with acetic acid to cyclohexyl acetate, followed by hydrogenation to cyclohexanol. The experimentally ...
DOI:
10.1039/d0gc03020a

40. DFT Study on the Chemical Absorption Mechanism of CO₂ in Diamino Protic Ionic Liquids

Author:
Jing Ma; Yutong Wang; Xueqing Yang; Mingxuan Zhu; Baohe Wang
Source:
Journal of physical chemistry 2021 v.125 no.5 pp. 1416-1428
ISSN:
1520-5207
Subject:
Gibbs free energy; absorption; acetates; acetic acid; carbon dioxide; cations; density functional theory; energy; enthalpy; heat; models; solvation
Abstract:
... Diamino protic ionic liquids (DPILs) possess a wide application prospect in the field of acid gas absorption. In this work, two representative DPILs, that is, dimethylethylenediamine 4-fluorophenolate ([DMEDAH][4-F-PhO]) and dimethylethylenediamine acetate ([DMEDAH][OAc]), which had been proved to display favorable CO₂ absorption performance in experiments, were selected. Based on the solvation mo ...
DOI:
10.1021/acs.jpcb.0c08500

41. Dense Dithiolene Units on Metal–Organic Frameworks for Mercury Removal and Superprotonic Conduction

Author:
Yonghe He; Jiale Dong; Zhiqing Liu; Mu-Qing Li; Jieying Hu; Yan Zhou; Zhengtao Xu; Jun He
Source:
ACS applied materials & interfaces 2021 v.14 no.1 pp. 1070-1076
ISSN:
1944-8252
Subject:
acetates; acetic acid; benzene; ethane; ligands; mercury; relative humidity
Abstract:
... With 2-COOH and 4-SH donors all packed onto the benzene ring, tetrasulfanyl terephthalic acid (TST) is a simple yet fully equipped ligand to move the field of metal-coordination materials─it is now accomplished. The hard-soft carboxyl-thiol synergy is leveraged here in selectively bonding the carboxyl units to Zr(IV) ions to form the same cubic net of UiO-66 (this being based on the terephthalic l ...
DOI:
10.1021/acsami.1c20762

42. Designing Cooperative Hydrogen Bonding in Polyethers with Carboxylic Acid Pendants

Author:
Geehwan Kwon; Minseong Kim; Woo Hyuk Jung; Suebin Park; Thi-Thanh Huynh Tam; Seung-Hwan Oh; Soo-Hyung Choi; Dong June Ahn; Sang-Ho Lee; Byeong-Su Kim
Source:
Macromolecules 2021 v.54 no.18 pp. 8478-8487
ISSN:
1520-5835
Subject:
acetates; acetic acid; adhesion; biocompatibility; hydrogen; hydrogen bonding; hydrolysis; molecular dynamics; pH; polymerization
Abstract:
... As a primary molecular interaction governing unique phenomena found in nature, hydrogen bonding (H-bonding) has played a significant role in the design of functional polymeric materials. We herein present the design and synthesis of poly(glycidoxy acetic acid) (PGA), which involved H-bonding donor and acceptor moieties within a single repeating unit of polyether for the precise control of the coop ...
DOI:
10.1021/acs.macromol.1c01314

43. Development of multi‐component non‐sex pheromone blends to monitor both sexes of Cydia pomonella (Lepidoptera: Tortricidae)

Author:
Michele Preti; Alan Lee Knight; María Valentina Mujica; Esteban Basoalto; Sebastian Larsson Herrera; Marco Tasin; Sergio Angeli
Source:
Journal of applied entomology 2021 v.145 no.8 pp. 822-830
ISSN:
0931-2048
Subject:
Cydia pomonella; Malus domestica; acetates; acetic acid; apples; butyrates; entomology; farnesol; females; host plants; limonene; linalool; males; methyl salicylate; moths; terpineol
Abstract:
... Nineteen host plant volatiles (HPVs) were screened for attractivity to adult codling moth Cydia pomonella (L.) as a fourth component of core blends (3K) including (E,Z)‐2,4‐ethyl decadienoate, (E)‐4,8‐dimethyl‐1,3,7‐nonatriene and acetic acid. Each new quaternary combination was compared with a previously reported attractive bisexual lure (4K), consisting of the 3K blend plus 6‐ethenyl‐2,2,6‐trime ...
DOI:
10.1111/jen.12898

44. Different scalding duration in hot whey influencing chemical, biochemical, physical, microstructural, textural and sensorial characteristics of brine-type cheese

Author:
Zehra Güler; Dilek Türkmen; Ahmet Dursun
Source:
Lebensmittel-Wissenschaft + Technologie 2021 v.145 pp. 111312
ISSN:
0023-6438
Subject:
acetates; acetic acid; cheeses; chewiness; color; ethanol; hardness; lactic acid; milk; nitrogen; titratable acidity; water solubility; whey
Abstract:
... The effects of curd scalding duration on chemical, biochemical, color, textural, microstructural and sensorial characteristics of a brine-type cheese were examined. The cheeses that were characterized by the scalding of curd in hot whey (60 °C) and brining in whey were manufactured from raw cows’ milk and the curds were scalded for 10, 20 or 30 min. Regardless of cheese ripening time, increased sc ...
DOI:
10.1016/j.lwt.2021.111312

45. Direct utilization of industrial carbon dioxide with low impurities for acetate production via microbial electrosynthesis

Author:
Moumita Roy; Ravineet Yadav; P. Chiranjeevi; Sunil A. Patil
Source:
Bioresource technology 2021 v.320 pp. 124289
ISSN:
0960-8524
Subject:
Acetobacterium; Clostridium ljungdahlii; acetates; acetic acid; biocathodes; biofilm; carbon dioxide; electrochemistry; electrosynthesis; feedstocks; fermentation; hydrogen; microbial communities; mixed culture
Abstract:
... The present study aimed to demonstrate the utilization of unpurified industrial CO₂ with low impurities for acetate production via microbial electrosynthesis (MES) for the first time. In MES experiments with CO₂-rich brewery gas, the enriched mixed culture dominated by Acetobacterium produced 1.8 ± 0.2 g/L acetic acid at 0.26 ± 0.03 g/Lcₐₜₕₒₗyₜₑ/d rate and outperformed a pure culture of Clostridiu ...
DOI:
10.1016/j.biortech.2020.124289

46. Distinctive chemical and aromatic composition of red wines produced by Saccharomyces cerevisiae co-fermentation with indigenous and commercial non-Saccharomyces strains

Author:
Boqin Zhang; Violeta Ivanova-Petropulos; Changqing Duan; Guoliang Yan
Source:
Food bioscience 2021 v.41 pp. 100925
ISSN:
2212-4292
Subject:
Lachancea thermotolerans; Saccharomyces cerevisiae; Torulaspora delbrueckii; acetates; acetic acid; alcoholic fermentation; glycerol; lactic acid; malolactic fermentation; odors; wines; yeasts
Abstract:
... The use of Saccharomyces cerevisiae and non-Saccharomyces yeast species as mixed starters has advantages over pure culture fermentation because of increased wine sensory characteristics. The aim of the present study was to evaluate the divergences of wine compositions fermented by indigenous non-Saccharomyces strains (Torulaspora delbrueckii TD12 and Lachancea thermotolerans LT9) or commercial non ...
DOI:
10.1016/j.fbio.2021.100925

47. Dual Role of Missing-Linker Defects Terminated by Acetate Ligands in a Zirconium-Based MOF in Promoting Photocatalytic Hydrogen Peroxide Production

Author:
Yoshifumi Kondo; Yasutaka Kuwahara; Kohsuke Mori; Hiromi Yamashita
Source:
Journal of physical chemistry 2021 v.125 no.51 pp. 27909-27918
ISSN:
1932-7455
Subject:
acetates; acetic acid; coordination polymers; hydrogen peroxide; hydrophobicity; irradiation; ligands; photocatalysis; photocatalysts; physical chemistry; porosity
Abstract:
... Defect engineering for metal–organic frameworks is a promising process that can modulate their electronic structure, surface chemical properties, and porosity. In this study, we demonstrate that defect engineering using an acetic acid modulator on a zirconium-based metal–organic framework (UiO-66-NH₂) is an effective approach to enhance the photocatalytic performance in hydrogen peroxide (H₂O₂) pr ...
DOI:
10.1021/acs.jpcc.1c07735

48. Effect of Dietary Acetic Acid Supplementation on Plasma Glucose, Lipid Profiles, and Body Mass Index in Human Adults: A Systematic Review and Meta-analysis

Author:
Daniela S. Valdes; Daniel So; Paul A. Gill; Nicole J. Kellow
Source:
Journal of the Academy of Nutrition and Dietetics 2021 v.121 no.5 pp. 895-914
ISSN:
2212-2672
Subject:
acetates; acetic acid; adjuvants; asymmetry; blood glucose; body fat; body mass index; databases; dietetics; food consumption; glucose; glycohemoglobin; high density lipoprotein; humans; insulin resistance; low density lipoprotein; meta-analysis; noninsulin-dependent diabetes mellitus; overweight; people; placebos; risk; short chain fatty acids; statistical models; systematic review; therapeutics; triacylglycerols
Abstract:
... Acetic acid is a short-chain fatty acid that has demonstrated biomedical potential as a dietary therapeutic agent for the management of chronic and metabolic illness comorbidities. In human beings, its consumption may improve glucose regulation and insulin sensitivity in individuals with cardiometabolic conditions and type 2 diabetes mellitus. Published clinical trial evidence evaluating its susta ...
DOI:
10.1016/j.jand.2020.12.002

49. Effect of Unsaturated Fatty Acids on Intra-Metabolites and Aroma Compounds of Saccharomyces cerevisiae in Wine Fermentation

Author:
Peitong Liu; Violeta Ivanova-Petropulos; Changqing Duan; Guoliang Yan
Source:
Foods 2021 v.10 no.2 pp. -
ISSN:
2304-8158
Subject:
Saccharomyces cerevisiae; acetates; acetic acid; fermentation; glycerol; glycolysis; odors; red wines; tricarboxylic acid cycle; volatile compounds; yeasts
Abstract:
... The small changes in concentration of unsaturated fatty acids (UFAs) cause a significant influence on the aromatic component of wines. In this work, the effect of UFAs mixture (including linoleic, oleic, and α-linolenic acids) addition on intra-metabolites and aromatic compounds of two Saccharomyces cerevisiae strain EC1118 and BDX were investigated in red wine fermentation, respectively. The resu ...
DOI:
10.3390/foods10020277

50. Effect of co-inoculation and sequential inoculation of Lactobacillus fermentum and Pichia kluyveri on pork hydrolysates fermentation

Author:
Xinzhi Li; Shao-Quan Liu
Source:
Food bioscience 2021 v.44 pp. 101400
ISSN:
2212-4292
Subject:
Lactobacillus fermentum; Pichia kluyveri; acetates; acetic acid; fermentation; glucose; pork; yeasts
Abstract:
... This is the first study on exploiting a LAB - Lactobacillus fermentum PCC and a yeast Pichia kluyveri (FrootZen) as starter cultures in meat-based sauce fermentation. An apparent antagonistic relationship was observed between these two cultures. P. kluyveri proliferated with an increased cell count of only 1.14 log CFU/mL and dropped to the original level (approx. 5.8 log CFU/mL), while the LAB gr ...
DOI:
10.1016/j.fbio.2021.101400

51. Effects of Saccharomyces cerevisiae Culture on Ruminal Fermentation, Blood Metabolism, and Performance of High-Yield Dairy Cows

Author:
Xiaoge Sun; Yue Wang; Erdan Wang; Shu Zhang; Qianqian Wang; Yan Zhang; Yajing Wang; Zhijun Cao; Hongjian Yang; Wei Wang; Shengli Li
Source:
Animals 2021 v.11 no.8 pp. -
ISSN:
2076-2615
Subject:
Holstein; Saccharomyces cerevisiae; acetates; acetic acid; blood; butyric acid; dietary supplements; interleukin-2; interleukin-6; lactation; lipid content; metabolism; milk; milk fat; milk proteins; milk yield; pH; propionic acid; protein content; rumen fermentation; rumen fluids; volatile fatty acids
Abstract:
... High-yield dairy cows with high-concentrate diets are more prone to experiencing health problems associated with rumen microbial imbalance. This study assessed the effects of Saccharomyces cerevisiae culture (SC), a food supplement, on ruminal pH, volatile fatty acid (VFA), inflammatory cytokines, and performance of high-yield dairy cows. Forty Holstein cows with similar characteristics (e.g., mil ...
DOI:
10.3390/ani11082401

52. Effects of chop lengths of ramie silage on ruminal fermentation, free amino acid content, and cellulase activity in goats

Author:
Shengnan Sun; Gongxuan Chen; Zhenping Hou; Xuelei Zhang; Guitao Jiang; Duanqin Wu
Source:
Czech Journal of Animal Science v.66 no. pp. 470-475
ISSN:
1212-1819
Subject:
acetates; acetic acid; aspartic acid; butyric acid; chop length; endo-1,4-beta-glucanase; free amino acids; pH; propionic acid; ramie; rumen fermentation; rumen fluids; silage; valeric acid; volatile fatty acids; xylanases
Abstract:
... Twelve Liuyang black goats were selected and divided into three groups in a randomized design and they were provided one of the three treatment diets with different chop lengths of ramie silage [1 cm (RS1), 2 cm (RS2), and 3 cm (RS3)]. The length had no effect on pH or the content of acetic acid, butyric acid, and valeric acid. In contrast, NH3–N decreased (P = 0.024) and the ratio of a ...
DOI:
10.17221/6/2021-cjas

53. Electrostimulation of hyperthermophile Thermotoga neapolitana cultures

Author:
G. d'Ippolito; G. Squadrito; M. Tucci; N. Esercizio; A. Sardo; M. Vastano; M. Lanzilli; A. Fontana; P. Cristiani
Source:
Bioresource technology 2021 v.319 pp. 124078
ISSN:
0960-8524
Subject:
Thermotoga neapolitana; acetates; acetic acid; biofilm; bioreactors; carbon dioxide; fermentation; glucose; hydrogen; lactic acid; thermodynamics; value added
Abstract:
... Hyperthermophile bioelectrochemical systems are seldom investigated although their superior control of microbial consortium and thermodynamic advantages. Hyperthermophilic Thermotogales, for instance, are able to produce hydrogen and lactic acid from wastes better than mesophilic bacteria. Here, the electrostimulation of Thermotoga neapolitana in single-chamber electrochemical bioreactors is studi ...
DOI:
10.1016/j.biortech.2020.124078

54. Embedding ruthenium nanoparticles in the shell layer of titanium zirconium oxide hollow spheres to catalyze the degradation of alkali lignin under mild condition

Author:
Jiabai Cai; Huan Li; Qi Jing; Debin Li; Yangyang Zhang
Source:
Journal of hazardous materials 2021 v.411 pp. 125161
ISSN:
0304-3894
Subject:
acetates; acetic acid; biodegradability; biogas; butanol; catalysts; catalytic activity; decolorization; hydroxyl radicals; intermediate product; lignin; molecular weight; nanocomposites; organic carbon; ruthenium; slurries; titanium; wastewater; zirconium oxide
Abstract:
... To catalyze the degradation of lignin in refractory wastewater efficiently, a new nanocomposite with Ru nanoparticles embedded on the surface of TiZrO₄ hollow spheres was fabricated with three method a “sol-gel + calcination + vacuum-impregnation” template method, and the unique binary composition of TiZrO₄/Ru prevented the aggregation of Ru and keep its high activity. During 3-h catalytic-oxidati ...
DOI:
10.1016/j.jhazmat.2021.125161

55. Enhanced lipid accumulation in Metschnikowia pulcherrima using volatile fatty acids under non-sterile repeated batch cultivation

Author:
Qian Li; Danyang Wang; Xiaolei Liu; Anjie Li; Kartik Chandran
Source:
International biodeterioration & biodegradation 2021 v.163 pp. 105256
ISSN:
0964-8305
Subject:
Metschnikowia pulcherrima; acetates; acetic acid; acetyl coenzyme A; acidification; biodegradation; biodiesel; biomass production; bioreactors; carbon; cell growth; citric acid; energy; ethanol; lipid content; nitrogen; pH; pentose phosphate cycle; phosphorus; pollution; starvation; transcriptomics; valeric acid; yeasts
Abstract:
... Metschnikowia pulcherrima, a non-traditional oleaginous yeast, was investigated using 0.5–20 g/L of acetic, propionic, butyric and valeric acid (four model products of anaerobic acidification) respectively as carbon sources to accumulate microbial lipids so as to produce biodiesel. The results showed that acetic acid was the most efficient carbon source for improving cell growth, lipid content and ...
DOI:
10.1016/j.ibiod.2021.105256

56. Exploring the Solvation of Acetic Acid in Water Using Liquid Jet X-ray Photoelectron Spectroscopy and Core Level Electron Binding Energy Calculations

Author:
Jared P. Bruce; Kimberly Zhang; Sree Ganesh Balasubramani; Amanda R. Haines; Randima P. Galhenage; Vamsee K. Voora; Filipp Furche; John C. Hemminger
Source:
Journal of physical chemistry 2021 v.125 no.31 pp. 8862-8868
ISSN:
1520-5207
Subject:
X-ray photoelectron spectroscopy; acetates; acetic acid; carbon; energy; liquids; molecular dynamics; solvation
Abstract:
... Liquid jet X-ray photoelectron spectroscopy was used to investigate changes in the local electronic structure of acetic acid in the bulk of aqueous solutions induced by solvation effects. These effects manifest themselves as shifts in the difference in the carbon 1s binding energy (ΔBE) between the methyl and carboxyl carbons of acetic acid. Furthermore, molecular dynamics simulations, coupled wit ...
DOI:
10.1021/acs.jpcb.1c03520

57. Fumigant activity of pyrolysis fractions derived from waste licuri's pericarp (Syagrus coronata - Arecaceae) in the control the red flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)

Author:
Camila Mattos; Juliana Andrade; Pamella C.O. Oliveira; Marcia C.C. Veloso; Gilberto A. Romeiro; Evelize Folly das Chagas
Source:
Environmental challenges 2021 v.5 pp. 100294
ISSN:
2667-0100
Subject:
Syagrus coronata; Tribolium castaneum; acetates; acetic acid; alanine; batch systems; biofuels; biopesticides; food production; fumigants; fumigation; furfural; gas chromatography-mass spectrometry; mortality; pericarp; pyrolysis; toxicity; wastes
Abstract:
... The large production of waste and the destination for its disposal is one of the biggest problems faced by the agro-industrial sector. Furthermore, in food production, the control of insect pests during grain storage causes great damage. Scientific research evaluating the effectiveness of pyrolysis products in insects is recent and still little studied. In this work, the aqueous phase (LAF) and bi ...
DOI:
10.1016/j.envc.2021.100294

58. Highly selective recovery of medium chain carboxylates from co-fermented organic wastes using anion exchange with carbon dioxide expanded methanol desorption

Author:
Clara Fernando-Foncillas; Carlos I. Cabrera-Rodríguez; Francisco Caparrós-Salvador; Cristiano Varrone; Adrie J.J. Straathof
Source:
Bioresource technology 2021 v.319 pp. 124178
ISSN:
0960-8524
Subject:
acetates; acetic acid; adsorption; anion exchange; anion exchange resins; carbon; carbon dioxide; chlorides; desorption; methanol; technology
Abstract:
... The aim of this work was to recover a mixture of carboxylates ranging from 2 to 7 carbon atoms using a strong anion exchange resin, followed by desorption with CO₂-expanded methanol. Medium chain carboxylates hexanoate and heptanoate adsorbed better than acetate, and the corresponding medium chain carboxylic acids desorbed easier than acetic acid. Consequently, hexanoate and heptanoate were concen ...
DOI:
10.1016/j.biortech.2020.124178

59. Impact of Nitrogen Addition on Wine Fermentation by S. cerevisiae Strains with Different Nitrogen Requirements

Author:
Ying Su; José María Heras; Amparo Gamero; Amparo Querol; José Manuel Guillamón
Source:
Journal of agricultural and food chemistry 2021 v.69 no.21 pp. 6022-6031
ISSN:
1520-5118
Subject:
acetates; acetic acid; food chemistry; glycerol; metabolites; nitrogen; odors; stuck fermentation; succinic acid; wine industry; winemaking; wines; yeasts
Abstract:
... In modern oenology, supplementation of nitrogen sources is an important strategy to prevent sluggish or stuck fermentation. The present study thoroughly determined the effect of nitrogen addition timing and nitrogen source type on fermentation kinetics and aroma production, carried out by yeast strains with low and high nitrogen requirements. The results revealed that yeast strains with different ...
DOI:
10.1021/acs.jafc.1c01266

60. In Situ Chemical Locking of Acetates During Xylo-Oligosaccharide Preparation by Lignocellulose Acidolysis

Author:
Jianming Guo; Jianglin Zhao; Ali Nawaz; Ikram ul Haq; Wenhuan Chang; Yong Xu
Source:
Applied biochemistry and biotechnology 2021 v.193 no.8 pp. 2602-2615
ISSN:
0273-2289
Subject:
acetates; acetic acid; acidolysis; biomass; biotechnology; calcium oxide; corn cobs; evaporation; hydrolysates; lignocellulose; sodium; xylooligosaccharides
Abstract:
... Xylo-oligosaccharides with high value could be obtained by acidolysis of lignocellulosic biomass with acetic acid, which was an urgent problem to solve for the separation of acetic acid from crude xylo-oligosaccharides solution. Four neutralizers, CaCO₃, CaO, Na₂CO₃, and NaOH, were used for in situ chemically locking the acetic acid in the acidolyzed hydrolysate of corncob. The chemically locked h ...
DOI:
10.1007/s12010-021-03550-8

61. In search of sulfate‐reducing consortia able to degrade acetate under acidic conditions

Author:
Nohemi G Campos‐Quevedo; Irene Sánchez‐Andrea; Nguyen E López‐Lozano; Alfons JM Stams; Lourdes B Celis
Source:
Journal of chemical technology and biotechnology 2021 v.96 no.5 pp. 1228-1236
ISSN:
0268-2575
Subject:
Desulfotomaculum; acetates; acetic acid; bioreactors; byproducts; carbon dioxide; community structure; glycerol; inoculum; lactic acid; oxidation; pH; sediments; sulfates; sulfides
Abstract:
... BACKGROUND: Sulfate‐reducing microorganisms (SRM) can help to remediate acidic effluents containing metals. One drawback of sulfate reduction is that some SRM do not completely oxidize the substrate to CO₂ and acetic acid may remain as a byproduct, affecting the process efficiency. Acidic environments are a potential source of sulfate‐reducers able to thrive in acidic conditions. This work aimed t ...
DOI:
10.1002/jctb.6635

62. Integration of acetic acid catalysis with one-pot protic ionic liquid configuration to achieve high-efficient biorefinery of poplar biomass

Author:
Kaixuan Huang; Mood Mohan; Anthe George; Blake A. Simmons; Yong Xu; John M. Gladden
Source:
Green chemistry 2021 v.23 no.16 pp. 6036-6049
ISSN:
1463-9270
Subject:
Populus; acetates; acetic acid; biofuels; biorefining; catalytic activity; cellulose; cost effectiveness; crystal structure; delignification; depolymerization; ethanolamine; glucose; green chemistry; hemicellulose; hydrogen bonding; hydrolysis; ionic liquids; lignin; lignocellulose; models; solubility; surface area; thermal degradation; woody biomass
Abstract:
... Recyclable biocatalysts and high-efficiency lignocellulose deconstruction are the crucial factors for cost-effective conversion of biomass into biofuels and bioproducts. Acetic acid-based catalytic hydrolysis of grassy lignocellulosic biomass presents a promising application because of its effectivity, recyclability, and other environmentally friendly features. However, this treatment is not as ef ...
DOI:
10.1039/d1gc01727f

63. Joint effects of carbon nanotubes and copper oxide nanoparticles on fermentation metabolism towards Saccharofermentans acetigenes: Enhancing environmental adaptability and transcriptional expression

Author:
Wanying Hu; Yang Wu; Yaozhi Bian; Xiong Zheng; Yuexi Chen; Lei Dong; Yinguang Chen
Source:
Bioresource technology 2021 v.336 pp. 125318
ISSN:
0960-8524
Subject:
acetates; acetic acid; acetogens; carbon nanotubes; cupric oxide; fermentation; genes; glycolysis; pyruvic acid; transcription (genetics)
Abstract:
... In this study, the joint effects of widely used copper oxide nanoparticles (CuO NPs) and multi-walled carbon nanotubes (MWCNTs) on the fermentation metabolism of a model acetogenic bacterium Saccharofermentans acetigenes were investigated and the underlying mechanisms were further explored. The presence of sole CuO NPs or MWCNTs severely inhibited the acetate generation, while their co-existences ...
DOI:
10.1016/j.biortech.2021.125318

64. Lactobacillus strains derived from human gut ameliorate metabolic disorders via modulation of gut microbiota composition and short-chain fatty acids metabolism

Author:
G. Wang; G. Zhu; C. Chen; Y. Zheng; F. Ma; J. Zhao; Y.-K. Lee; H. Zhang; W. Chen
Source:
Beneficial microbes 2021 v.12 no.3 pp. 267-281
ISSN:
1876-2891
Subject:
Lactobacillus; acetates; acetic acid; diet; digestive system; dysbiosis; homeostasis; humans; intestinal microorganisms; metabolic diseases; metabolic syndrome; probiotics
Abstract:
... Regulation on gut microbiota and short-chain fatty acids (SCFAs) are believed to be a pathway to suppress the development of metabolic syndrome. In this study, three Lactobacillus strains derived from the human gut were investigated for their effects on alleviation of metabolic disorders. These strains were individually administered to metabolic disorder rats induced by high-fat-high-sucrose (HFHS ...
DOI:
10.3920/BM2020.0148

65. La‐ H‐zeolites: efficient catalysts for acetic acid ketonic decarboxylation and esterification

Author:
Gheorghiţa Mitran; Shaojiang Chen; Wenyu Huang; Dong‐Kyun Seo
Source:
Journal of chemical technology and biotechnology 2021 v.96 no.7 pp. 2022-2032
ISSN:
0268-2575
Subject:
Fourier transform infrared spectroscopy; Lewis acids; acetates; acetic acid; acetone; acidity; adsorption; ammonium; biotechnology; decarboxylation; drugs; esterification; ion exchange; land evaluation; lanthanum; pyridines; zeolites
Abstract:
... BACKGROUND: Cyclohexyl acetate and acetone are used as environmentally friendly solvents, while isobutene acts as an intermediate in the production of methacrolein, ethers, plastics and pharmaceuticals. Two La‐zeolite catalysts have been studied for converting acetic acid to cyclohexyl acetate, acetone and isobutene. RESULTS: La‐based zeolites were synthesized from Na‐nFAU zeolites by ammonium ion ...
DOI:
10.1002/jctb.6732

66. Meat goat diet supplementation with crude glycerine: Ruminal fermentation metabolism, blood chemistry profile, animal performance and carcass traits

Author:
Nar K. Gurung; Kweku B. Tuoho; Frank W. Abrahamsen; Byeng R. Min
Source:
Journal of animal physiology and animal nutrition 2021 v.105 no.3 pp. 470-477
ISSN:
0931-2439
Subject:
Boer (goat breed); Cynodon dactylon; acetates; acetic acid; average daily gain; blood chemistry; bucks; carcass characteristics; corn; dry matter intake; experimental diets; feed concentrates; feed conversion; feed supplements; glycerol; goat feeding; goat meat; goats; grass hay; longissimus muscle; propionic acid; rumen; rumen fermentation; volatile fatty acids
Abstract:
... The objective of this experiment was to determine the effects of feeding varying levels of crude glycerine (CG) on dry matter intake (DMI), animal performance, carcass traits and rumen volatile fatty acids (VFA) concentration in meat goats. Twenty‐four intact male Boer goats (23.9 ± 1.0 kg initial BW and 4–5 months of age) were randomly assigned to one of four experimental diets (n = 6) containing ...
Handle:
10113/7403301
DOI:
10.1111/jpn.13489

67. Metabolomics-Driven Discovery of an Introduced Species and Two Malaysian Piper betle L. Variants

Author:
Muhamad Faris Osman; Soo Yee Lee; Shahrul Razid Sarbini; Siti Munirah Mohd Faudzi; Shamsul Khamis; Badrul Hisyam Zainudin; Khozirah Shaari
Source:
Plants 2021 v.10 no.11 pp. -
ISSN:
2223-7747
Subject:
DNA; Piper betle; acetates; acetic acid; data collection; internal transcribed spacers; introduced species; leaves; metabolites; metabolomics; principal component analysis; spectral analysis; Malaysia
Abstract:
... The differences in pungency of “sirih” imply the probable occurrence of several variants of Piper betle L. in Malaysia. However, the metabolite profiles underlying the pungency of the different variants remain a subject of further research. The differences in metabolite profiles of selected Malaysian P. betle variants were thus investigated; specifically, the leaf aqueous methanolic extracts and e ...
DOI:
10.3390/plants10112510

68. Molecular Understanding of the Catalytic Consequence of Ketene Intermediates under Confinement

Author:
Wei Chen; Guangchao Li; Xianfeng Yi; Sarah J. Day; Karolina A. Tarach; Zhiqiang Liu; Shang-Bin Liu; Shik Chi Edman Tsang; Kinga Góra-Marek; Anmin Zheng
Source:
Journal of the American Chemical Society 2021 v.143 no.37 pp. 15440-15452
ISSN:
1520-5126
Subject:
X-ray diffraction; acetates; acetic acid; alkynes; catalytic activity; dimerization; dissociation; protonation; zeolites
Abstract:
... Neutral ketene is a crucial intermediate during zeolite carbonylation reactions. In this work, the roles of ketene and its derivates (viz., acylium ion and surface acetyl) associated with direct C–C bond coupling during the carbonylation reaction have been theoretically investigated under realistic reaction conditions and further validated by synchrotron radiation X-ray diffraction (SR-XRD) and Fo ...
DOI:
10.1021/jacs.1c08036

69. Multiscale integration of mixotrophic microalgal cultivation, lipid synthesis, rapid biomass harvesting, and nutrient recycling in pilot-scale photobioreactors

Author:
Arun Kumar Mehta; Saikat Chakraborty
Source:
Algal research 2021 v.53 pp. 102146
ISSN:
2211-9264
Subject:
Chlorella sorokiniana; acetates; acetic acid; acetyl coenzyme A; alum; biogeochemical cycles; biomass production; carbon dioxide; cost effectiveness; culture media; cytosol; energy efficiency; fatty acids; flocculation; harvest date; hydrolysis; ions; light; lipid content; mass; microalgae; nitrogen; organic carbon; photobioreactors; photoperiod; recycling; research; surfaces; synthesis
Abstract:
... This work presents an acetic acid mediated energy-efficient process that integrates mixotrophic cultivation of extremophilic microalga Chlorella sorokiniana at the photobioreactor (macro) scale, with algal lipid accumulation at the molecular (micro) scale, and rapid biomass harvesting at the algal particle (meso) scale, followed by multiple recycling of nutrient-rich harvested broth. Chlorella sor ...
DOI:
10.1016/j.algal.2020.102146

70. New insights into the acetate uptake transporter (AceTr) family: Unveiling amino acid residues critical for specificity and activity

Author:
Toni Rendulić; João Alves; João Azevedo-Silva; Isabel Soares-Silva; Margarida Casal
Source:
Computational and Structural Biotechnology Journal 2021 v.19 pp. 4412-4425
ISSN:
2001-0370
Subject:
Escherichia coli; Saccharomyces cerevisiae; acetates; acetic acid; amino acids; biotechnology; gain-of-function mutation; hypersensitivity; models; mutants; phenotype; plasma membrane; site-directed mutagenesis; succinic acid; yeasts
Abstract:
... Aiming at improving the transport of biotechnologically relevant carboxylic acids in engineered microbial cell factories, the focus of this work was to study plasma membrane transporters belonging to the Acetate Uptake Transporter (AceTr) family. Ato1 and SatP, members of this family from Saccharomyces cerevisiae and Escherichia coli, respectively, are the main acetate transporters in these specie ...
DOI:
10.1016/j.csbj.2021.08.002

71. Nutrient influence on acidogenesis and native microbial community of Agave bagasse

Author:
Karol Dudek; Germán Buitrón; Idania Valdez-Vazquez
Source:
Industrial crops and products 2021 v.170 pp. 113751
ISSN:
0926-6690
Subject:
Agave; Beijerinckia; Cellulomonas; Lactobacillus; acclimation; acetates; acetic acid; bagasse; butyric acid; calcium; chemical oxygen demand; hydrolysis; lactic acid; microbial communities; pH; phosphates; propionic acid; urea; volatile fatty acids
Abstract:
... This study reports the start-up, acclimation, and performance of an acidogenesis process as a biological pretreatment method to solubilize Agave bagasse fibers using the native microbiota. The effects of nutrients were evaluated on acidogenesis performance (volatile fatty acid [VFA] production; soluble chemical oxygen demand [sCOD], and VFA yield) in a reactor R(+) supplemented with urea, phosphat ...
DOI:
10.1016/j.indcrop.2021.113751

72. Pair sites on Al3O nodes of the metal-organic framework MIL-100: Cooperative roles of defect and structural vacancy sites in methanol dehydration catalysis

Author:
Shangpu Zhuang; Haodong Huang; Yue Xiao; Zhuxiu Zhang; Jihai Tang; Bruce C. Gates; Dong Yang
Source:
Journal of catalysis 2021 v.404 pp. 128-138
ISSN:
0021-9517
Subject:
acetates; acetic acid; catalysts; catalytic activity; coordination polymers; formates; formic acid; ligands; methanol
Abstract:
... The metal–organic framework (MOF) MIL-100, which incorporates vacancy sites on Al₃O nodes, was synthesized with various densities of missing-benzene-1,3,5-tricarboxylate (BTC³⁻)-linker defect sites by using HNO₃ or acetic acid as a modulator. We report data that resolve the effects on reactivity of the node vacancies and defects that are neighbors of each other. For example, extra-framework BTC³⁻ ...
DOI:
10.1016/j.jcat.2021.09.006

73. Photochemical Vapor Generation of Halides in Organic-Acid-Free Media: Mechanism Study and Analysis of Water Samples

Author:
Jing Hu; Hanjiao Chen; Xiaoming Jiang; Xiandeng Hou
Source:
Analytical chemistry 2021 v.93 no.32 pp. 11151-11158
ISSN:
1520-6882
Subject:
acetates; acetic acid; analytical chemistry; atomic absorption spectrometry; bottled water; chlorides; copper; coumarin; fluorescence emission spectroscopy; fluorescent dyes; fluorides; gas chromatography-mass spectrometry; ligands; photochemistry; seawater; solvents; vapors; water analysis
Abstract:
... Herein, we report a discovery that photochemical vapor generation (PCVG) of halides (bromide, chloride, and fluoride) can be realized in organic-acid-free media, with figures of merit comparable to those in classical scenarios employing acetic acid. Metal acetates, copper salts, and mixtures of different acetates and copper salts were evaluated for their performance in facilitating PCVG of halides ...
DOI:
10.1021/acs.analchem.1c01639

74. Preliminary determination of antibacterial substances during anaerobic preservation of food waste and their effects on methanogenesis

Author:
Weijie Guan; Yuanyuan Ren; Xinxin Ma; Shuang Zhang; Pan Zhao; Ming Gao; Qunhui Wang; Chuanfu Wu
Source:
Environmental technology & innovation 2021 v.24 pp. 101813
ISSN:
2352-1864
Subject:
Escherichia coli; acetates; acetic acid; anaerobic digestion; antiseptics; environmental technology; fermentation; food waste; gas production (biological); hydrolysis; kinetics; lactic acid; methane; methane production; odors; pH; spoilage; toxicity; toxicity testing; transportation
Abstract:
... Food waste can easily breed bacteria and produce odour during production, collection, transportation, preservation and disposal. This work studied the effects of aerobic preservation and anaerobic preservation on the antibacterial and antiseptic properties of food waste and subsequent methane production by anaerobic fermentation. Compared with aerobic preservation, the concentration of lactic acid ...
DOI:
10.1016/j.eti.2021.101813

75. Pyridine End-Capped Polymer to Stabilize Organic Nanoparticle Dispersions for Solar Cell Fabrication through Reversible Pyridinium Salt Formation

Author:
Sonam Saxena; Philipp Marlow; Jegadesan Subbiah; Alexander Colsmann; Wallace W. H. Wong; David J. Jones
Source:
ACS applied materials & interfaces 2021 v.13 no.30 pp. 36044-36052
ISSN:
1944-8252
Subject:
acetates; acetic acid; ambient temperature; methanol; polymers; pyridines; solar cells
Abstract:
... Bulk-heterojunction nanoparticle dispersions in water or alcohol can be employed as eco-friendly inks for the fabrication of organic solar cells by printing or coating. However, one major drawback is the need for stabilizing surfactants, which facilitate nanoparticle formation but later hamper device performance. When surfactant-free dispersions are formulated, a strong limitation is imposed by th ...
DOI:
10.1021/acsami.1c07219

76. RIFM fragrance ingredient safety assessment, dihydrocarvyl acetate, CAS Registry Number 20777-49-5

Author:
A.M. Api; D. Belsito; D. Botelho; M. Bruze; G.A. Burton; J. Buschmann; M.A. Cancellieri; M.L. Dagli; M. Date; W. Dekant; C. Deodhar; A.D. Fryer; L. Jones; K. Joshi; M. Kumar; A. Lapczynski; M. Lavelle; I. Lee; D.C. Liebler; H. Moustakas; M. Na; T.M. Penning; G. Ritacco; J. Romine; N. Sadekar; T.W. Schultz; D. Selechnik; F. Siddiqi; I.G. Sipes; G. Sullivan; Y. Thakkar; Y. Tokura
Source:
Food and chemical toxicology 2021 v.156 pp. 112458
ISSN:
0278-6915
Subject:
acetates; acetic acid; genotoxicity; ingredients; isomers; mutagens; odors; phototoxicity; reproductive toxicology; risk; safety assessment; Europe; North America
Abstract:
... The existing information supports the use of this material as described in this safety assessment. Dihydrocarvyl acetate was evaluated for genotoxicity, repeated dose toxicity, reproductive toxicity, local respiratory toxicity, phototoxicity/photoallergenicity, skin sensitization, and environmental safety. Data from read-across analogs dihydrocarveol (isomer unspecified) (CAS # 619-01-2) and aceti ...
DOI:
10.1016/j.fct.2021.112458

77. Species-Specific Induction of Plant Volatiles by Two Aphid Species in Apple: Real Time Measurement of Plant Emission and Attraction of Lacewings in the Wind Tunnel

Author:
Zaid Badra; Sebastian Larsson Herrera; Luca Cappellin; Franco Biasioli; Teun Dekker; Sergio Angeli; Marco Tasin
Source:
Journal of chemical ecology 2021 v.47 no.7 pp. 653-663
ISSN:
0098-0331
Subject:
Aphis pomi; Chrysoperla carnea; Dysaphis plantaginea; acetates; acetic acid; acetone; apples; benzaldehyde; butyrates; chemical ecology; linalool; methyl salicylate; odors; pests; phenylethyl alcohol; volatile compounds; wind tunnels
Abstract:
... Upon damage by herbivores, plants release herbivory-induced plant volatiles (HIPVs). To find their prey, the pest’s natural enemies need to be fine-tuned to the composition of these volatiles. Whereas standard methods can be used in the identification and quantitation of HIPVs, more recently introduced techniques such as PTR-ToF–MS provide temporal patterns of the volatile release and detect addit ...
DOI:
10.1007/s10886-021-01288-5

78. Stepwise Iodide-Free Methanol Carbonylation via Methyl Acetate Activation by Pincer Iridium Complexes

Author:
Changho Yoo; Alexander J. M. Miller
Source:
Journal of the American Chemical Society 2021 v.143 no.32 pp. 12633-12643
ISSN:
1520-5126
Subject:
acetates; acetic acid; carbon-hydrogen bond activation; catalysts; corrosion; iodides; iridium; methanol; methyl iodide; methylation; nitrogen; solvents
Abstract:
... Iodide is an essential promoter in the industrial production of acetic acid via methanol carbonylation, but it also contributes to reactor corrosion and catalyst deactivation. Here we report that iridium pincer complexes mediate the individual steps of methanol carbonylation to methyl acetate in the absence of methyl iodide or iodide salts. Iodide-free methylation is achieved under mild conditions ...
DOI:
10.1021/jacs.1c05185

79. Structural Origin and Vibrational Fingerprints of the Ultrafast Excited State Proton Transfer of the Pyranine-Acetate Complex in Aqueous Solution

Author:
Maria Gabriella Chiariello; Greta Donati; Umberto Raucci; Fulvio Perrella; Nadia Rega
Source:
Journal of physical chemistry 2021 v.125 no.36 pp. 10273-10281
ISSN:
1520-5207
Subject:
acetates; acetic acid; aqueous solutions; hydrogen; mechanics; molecular dynamics; phenolic acids
Abstract:
... The excited state proton transfer (ESPT) reaction from the photoacid 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS or pyranine) to an acetate molecule has been investigated in explicit aqueous solution via excited state ab initio molecular dynamics simulations based on hybrid quantum/molecular mechanics (QM/MM) potentials. In all the trajectories, the direct proton transfer has been observed in the ...
DOI:
10.1021/acs.jpcb.1c05590

80. Sugarcane vinasse extreme thermophilic digestion: a glimpse on biogas free management

Author:
Mirian Y. K. Niz; Laura Fuentes; Claudia Etchebehere; Marcelo Zaiat
Source:
Bioprocess and biosystems engineering 2021 v.44 no.7 pp. 1405-1421
ISSN:
1615-7591
Subject:
acetates; acetic acid; acetogens; anaerobic digestion; biogas; bioprocessing; biorefining; hydrogen; methane production; methanogens; sugarcane; temperature; vinasse
Abstract:
... The high temperature in which sugarcane vinasse (SV) is generated (~ 90 °C) and the positive effect of higher temperatures in biochemical reactions have motivated the evaluation of SV anaerobic digestion (AD) under extreme temperature conditions. Two-stage (acidogenic/methanogenic) and single-stage (methanogenic) AD of SV were evaluated under 70 °C in structured-bed reactors. The extreme temperatu ...
DOI:
10.1007/s00449-021-02517-7

81. Synthesis of 1,10-decanediol diacetate and 1-decanol acetate from furfural

Author:
Chen-Qiang Deng; Qin-Zhu Jiang; Jin Deng; Yao Fu
Source:
Green chemistry 2021 v.23 no.5 pp. 2169-2176
ISSN:
1463-9270
Subject:
acetates; acetic acid; catalysts; furfural; green chemistry
Abstract:
... A green and efficient method was developed for upgrading furfural to 1,10-decanediol diacetate and 1-decanol acetate. 92% yield of the acetates was obtained through the tandem benzoin condensation and hydrodeoxygenation reaction. During the benzoin condensation, furfural was catalyzed into furoin in a quantitative yield by the immobilized NHC catalyst under solvent-free conditions. After dissolvin ...
DOI:
10.1039/d1gc00227a

82. The beneficial effects of Lactobacillus brevis FZU0713-fermented Laminaria japonica on lipid metabolism and intestinal microbiota in hyperlipidemic rats fed with a high-fat diet

Author:
Qing Zhang; Xiao-Yun Fan; Ying-Jia Cao; Ting-Ting Zheng; Wen-Jian Cheng; Li-Jiao Chen; Xu-Cong Lv; Li Ni; Ping-Fan Rao; Peng Liang
Source:
Food & function 2021 v.12 no.16 pp. 7145-7160
ISSN:
2042-650X
Subject:
Actinomyces; Collinsella; Lactobacillus brevis; Saccharina japonica; Sporosarcina; acetates; acetic acid; arachidonic acid; bile acids; biochemical pathways; biosynthesis; blood serum; butyric acid; functional foods; gene expression; genes; gluconeogenesis; glycolysis; high fat diet; histopathology; homeostasis; hyperlipidemia; intestinal microorganisms; lipid metabolism; liver; obesity; oral administration; probiotics; propionic acid; taurine
Abstract:
... This study aimed to investigate the beneficial effects of the oral administration of Lactobacillus brevis FZU0713-fermented Laminaria japonica (FLJ) on lipid metabolism and intestinal microbiota in hyperlipidemic rats fed with a high-fat diet (HFD). The results demonstrated that the oral administration of FLJ significantly inhibited obesity and improved the serum and hepatic biochemical parameters ...
DOI:
10.1039/d1fo00218j

83. The essential oil from Baccharis trimera (Less.) DC improves gastric ulcer healing in rats through modulation of VEGF and MMP-2 activity

Author:
Gabriela Bueno; Stefanni Liliane Chavez Rico; Larissa Lucena Périco; Rie Ohara; Vinicius Peixoto Rodrigues; Maycon Tavares Emílio-Silva; Renata Assunção; Lucia Regina Machado da Rocha; Domingos Sávio Nunes; Michele Aparecida Besten; Gustavo Heiden; Ana Carolina Lima Camargo; Luis Antonio Justulin; Clélia Akiko Hiruma-Lima
Source:
Journal of ethnopharmacology 2021 v.271 pp. 113832
ISSN:
0378-8741
Subject:
Baccharis genistelloides subsp. crispa; acetates; acetic acid; body weight changes; caspases; chemical composition; drugs; epidermal growth factor; essential oils; ethanol; gastric mucosa; gelatinase A; lansoprazole; males; mass spectrometry; mechanism of action; medicinal plants; myeloperoxidase; prostaglandin synthase; stomach ulcers; toxicity; toxicology; traditional medicine; vascular endothelial growth factors; Brazil
Abstract:
... Baccharis trimera (Less.) DC known as “carqueja” in Brazil has been acknowledged as a medicinal plant in folk medicine for the treatment of stomach aches and gastrointestinal disorders. The present study aimed to evaluate the gastroprotective and healing effects of essential oil from B. trimera (EOBT) against gastric ulcer lesions caused by absolute ethanol and acetic acid, respectively, and to id ...
DOI:
10.1016/j.jep.2021.113832

84. Thermal Desalination of Produced Water—An Analysis of the Partitioning of Constituents into Product Streams and Its Implications for Beneficial Use Outside the O&G Industry [Erratum: October 2021, v.13(21)]

Author:
Ganesh L. Ghurye; Dhananjay Mishra; Luke Lucas
Source:
Water 2021 v.13 no.8 pp. -
ISSN:
2073-4441
Subject:
acetates; acetic acid; ammonia; basins; celestite; computer software; crystallization; desalination; evaporation; gypsum; hydrophilicity; industry; prediction; propionic acid; steam; toxicity; water; Delaware
Abstract:
... To understand partitioning of produced water (PW) constituents using thermal desalination, PW from the Delaware Basin was desalinated using a crystallization process and modeled using OLI Systems, Inc. (OLI, Parsippany, NJ, USA) chemistry software. The incorporation of a pretreatment step, steam stripping, prior to desalination was predicted to be effective at removing hydrocarbons (across a range ...
DOI:
10.3390/w13081068

85. Three metal(II) complexes constructed using the 2-(1H-benzo[d]imidazol-2-yl)quinoline ligand

Author:
Feriel Aouatef Sahki; Mehdi Bouchouit; Sofiane Bouacida; Lyamine Messaadia; Elsa Caytan; Aissa Chibani; Thierry Roisnel; Abdelmalek Bouraiou
Source:
Zeitschrift für Naturforschung 2021 v.76 no.9 pp. 481-487
ISSN:
1865-7117
Subject:
acetates; acetic acid; benzimidazole; crystallization; geometry; hydrogen bonding; lead; ligands; quinoline; zinc
Abstract:
... 2-(1H-benzo[d]imidazol-2-yl)quinoline (BQ) as ligand and three coordination compounds of formula {Zn(BQ)Cl₂} (1), {Pb(BQ)Cl₂}ₙ (2) and {[Cu(BQ)₂(OC(O)CH₃)]OC(O)CH₃ · CH₃COOH} (3) have been synthesized and fully characterized. The complexes crystallize in triclinic space group P1‾$P‾{1}$. In complexes 1 and 2, the coordination geometry is a distorted tetrahedral environment around the zinc c ...
DOI:
10.1515/znb-2021-0071

86. Towards a Starter Culture for Cocoa Fermentation by the Selection of Acetic Acid Bacteria

Author:
Lucie Farrera; Alexandre Colas de la Noue; Caroline Strub; Benjamin Guibert; Christelle Kouame; Joël Grabulos; Didier Montet; Corinne Teyssier
Source:
Fermentation 2021 v.7 no.1 pp. -
ISSN:
2311-5637
Subject:
Acetobacter pasteurianus; acetates; acetic acid; beverages; biodiversity; carbon; cocoa beans; color; ethanol; fermentation; flavor; genomics; lactic acid; nucleotide sequences; pulp; specific growth rate; starter cultures
Abstract:
... Acetic acid bacteria are involved in many food and beverage fermentation processes. They play an important role in cocoa bean fermentation through their acetic acid production. They initiate the development of some of the flavor precursors that are necessary for the organoleptic quality of cocoa, and for the beans’ color. The development of starter cultures with local strains would enable the pres ...
DOI:
10.3390/fermentation7010042

87. A new kinetic model for simultaneous interesterification and esterification reactions from methyl acetate and highly acidic oil

Author:
L.N. Brondani; J.S. Ribeiro; F. Castilhos
Source:
Renewable energy 2020 v.156 pp. 579-590
ISSN:
0960-1481
Subject:
acetates; acetic acid; algorithms; aluminum oxide; catalysts; chemical equilibrium; endothermy; esterification; fatty acid methyl esters; glycerol; kinetics; oils; renewable energy sources
Abstract:
... This work presents the development of a kinetic model for simultaneous reactions of esterification and interesterification from macaw oil and methyl acetate using γ-alumina as the heterogeneous catalyst. Experimental data varied between 225 °C and 300 °C, catalyst concentration of 2 wt%, 5 wt%, and 10 wt% and molar ratio (methyl acetate: Oil) of 10:1, 20:1 and 40:1. Arrhenius kinetic parameters we ...
DOI:
10.1016/j.renene.2020.04.063

88. Acetic Acid Adsorption and Reactions on Ni(110)

Author:
Michelle S. Hofman; Emanuel V. Scoullos; Jason P. Robbins; Lotanna Ezeonu; Denis V. Potapenko; Xiaofang Yang; Simon G. Podkolzin; Bruce E. Koel
Source:
Langmuir 2020 v.36 no.30 pp. 8705-8715
ISSN:
1520-5827
Subject:
acetates; acetic acid; adsorption; carbon; carbon dioxide; carbon monoxide; density functional theory; desorption; hydrogen; hydrogen production; spectroscopy; temperature
Abstract:
... Acetic acid adsorption and reactions at multiple surface coverage values on Ni(110) were studied with temperature-programmed desorption (TPD) and infrared reflection absorption spectroscopy (IRAS) at 90–500 K. The experimental measurements were interpreted with density functional theory (DFT) calculations that provided information on adsorbate geometries, energies, and vibrational modes. Below the ...
DOI:
10.1021/acs.langmuir.0c00713

89. Aging status characterization of Chinese rice wine based on key aging-marker profiles combined with principal components analysis and partial least-squares regression

Author:
Na Wang; Zhemin Zhou; Shuang Chen
Source:
European food research & technology 2020 v.246 no.6 pp. 1283-1296
ISSN:
1438-2377
Subject:
acetates; acetic acid; aldehydes; benzene; cloves; flavor; food research; furans; gamma-decalactone; guaiacol; honey; ketones; least squares; octanoic acid; odors; oxidation; principal component analysis; rice wines; smell; solvents; sulfides; sulfur
Abstract:
... The “key aging-markers” were a kind of potential “aging markers” with a high odor activity value (OAV) or flavor dilution (FD) value, and this study aimed to characterize their aging scents in classifying the aging status of Chinese rice wine by the assessment of OAV values, principal components analysis (PCA) and partial least-squares regression (PLSR). Finally, a total of 29 “key aging-markers” ...
DOI:
10.1007/s00217-020-03488-x

90. Assessing the Oenological Potential of Nakazawaea ishiwadae, Candida railenensis and Debaryomyces hansenii Strains in Mixed-Culture Grape Must Fermentation with Saccharomyces cerevisiae

Author:
Niel van Wyk; Isak S. Pretorius; Christian von Wallbrunn
Source:
Fermentation 2020 v.6 no.2 pp. -
ISSN:
2311-5637
Subject:
Candida; Debaryomyces hansenii; Saccharomyces cerevisiae; acetates; acetic acid; coculture; fermentation; grape must; mixed culture; norisoprenoids; wines; yeasts
Abstract:
... Recently, there has been a growing interest in the role of non-Saccharomyces yeast (NSY) as a coculturing partner with Saccharomyces cerevisiae during grape must fermentation. We investigated three new strains, namely Nakazawaea ishiwadae, Candida railenensis and Debaryomyces hansenii, for their oenological potential in mixed-culture micro-vinifications with S.cerevisiae Vin13 using Muscaris grape ...
DOI:
10.3390/fermentation6020049

91. Cashew wine and volatile compounds produced during fermentation by non-Saccharomyces and Saccharomyces yeast

Author:
Ester Seixas Bullé Rêgo; Carlos Augusto Rosa; Ana Luiza Freire; Ana Maria de Resende Machado; Fátima de Cássia Oliveira Gomes; Ayslan Santos Pereira da Costa; Marcelo da Costa Mendonça; Maria Lucila Hernández-Macedo; Francine Ferreira Padilha
Source:
Lebensmittel-Wissenschaft + Technologie 2020 v.126 pp. 109291
ISSN:
0023-6438
Subject:
Hanseniaspora opuntiae; Saccharomyces cerevisiae; Torulaspora delbrueckii; acetates; acetic acid; cashew fruit; fermentation; flavor; fruit juices; fruit wines; fruits; markets; odors; phenylethyl alcohol; volatile compounds; yeasts
Abstract:
... Making wines from tropical fruits with pleasant sensory characteristics has gradually gained potential as a new product within the beverages market. In this study, the ability to ferment cashew apple juice of non-Saccharomyces strains previously isolated from tropical fruits and Saccharomyces were evaluated, as well as their production of desirable volatile compounds. The isolates Torulaspora delb ...
DOI:
10.1016/j.lwt.2020.109291

92. Characterization and Comparison of Aroma Profiles and Aroma-Active Compounds between Traditional and Modern Sichuan Vinegars by Molecular Sensory Science

Author:
Sam Al-Dalali; Fuping Zheng; Baoguo Sun; Feng Chen
Source:
Journal of agricultural and food chemistry 2020 v.68 no.18 pp. 5154-5167
ISSN:
1520-5118
Subject:
acetates; acetic acid; flavor; gas chromatography-mass spectrometry; lactones; odors; vinegars; volatile compounds; China
Abstract:
... Aroma profiles and aroma-active compounds of Sichuan vinegar, which is one of the four famous vinegars in China, were systemically analyzed by solvent-assisted flavor evaporation-gas chromatography-mass spectrometry (SAFE-GC-MS) and gas chromatography-olfactometry (GC-O). In addition, descriptive profile analysis, aroma reconstitution, and omission test were used to evaluate and compare the Sichua ...
DOI:
10.1021/acs.jafc.0c00470

93. Competitive reactions of SO2 and acetic acid on α-Al2O3 and CaCO3 particles

Author:
Ning Yang; Narcisse T. Tsona; Shumin Cheng; Siyang Li; Li Xu; Yifeng Wang; Lingyan Wu; Lin Du
Source:
Science of the total environment 2020 v.699 pp. 134362
ISSN:
0048-9697
Subject:
absorbance; acetates; acetic acid; active sites; aluminum oxide; atmospheric chemistry; calcium carbonate; organic salts; pollutants; reflectance; spectroscopy; sulfites; sulfur dioxide
Abstract:
... Heterogeneous reactions between gaseous pollutants and mineral particles have gradually become a research hotspot in the field of atmospheric chemistry. In this paper, competitive reactions between SO₂ and acetic acid on the surface of α-Al₂O₃ and CaCO₃ particles were studied by the diffuse reflectance infrared Fourier transform spectroscopic (DRIFTS) technique in dark and dry conditions. At the s ...
DOI:
10.1016/j.scitotenv.2019.134362

94. Computational and experimental identification of strong synergy of the Fe/ZnO catalyst in promoting acetic acid synthesis from CH₄ and CO₂

Author:
Xiaowa Nie; Xianxuan Ren; Chunyan Tu; Chunshan Song; Xinwen Guo; Jingguang G. Chen
Source:
Chemical communications 2020 v.56 no.28 pp. 3983-3986
ISSN:
1364-548X
Subject:
acetates; acetic acid; carbon dioxide; catalysts; chemical reactions; copper; dissociation; iron; methane; prediction; zinc oxide
Abstract:
... DFT calculations have identified reaction pathways for acetic acid synthesis from CO₂ and CH₄ on ZnO, Cu/ZnO and Fe/ZnO surfaces. Fe/ZnO exhibits strong synergy in facilitating CH₄ activation, dissociation and C–C coupling. Thus, the surface acetate formation is significantly enhanced. The DFT predictions have been confirmed by in situ DRIFTS experiments. ...
DOI:
10.1039/c9cc10055e

95. Continuous preparation of flavour‐active acetate esters by direct biocatalytic esterification

Author:
Igor Chiarelli Perdomo; Martina Letizia Contente; Andrea Pinto; Diego Romano; Pedro Fernandes; Francesco Molinari
Source:
Flavour and fragrance journal 2020 v.35 no.2 pp. 190-196
ISSN:
0882-5734
Subject:
Aspergillus oryzae; acetate esters; acetates; acetic acid; biocatalysts; carboxylic ester hydrolases; catalytic activity; continuous systems; esterification; isoamyl alcohol; solvents
Abstract:
... Mycelium‐bound lipase(s) from Aspergillus oryzae catalysed direct esterification of isoamyl alcohol and cinnamyl alcohol with acetic acid in organic solvent, showing high stability towards substrates and products. Water produced during the esterification did not significantly affect the equilibrium of the reaction, allowing for high conversions. These features were exploited for preparing flavour‐ ...
DOI:
10.1002/ffj.3552

96. Density Functional Theory Study of Decarboxylation and Decarbonylation of Acetic Acid on Pd(111)

Author:
Kingsley C. Chukwu; Líney Árnadóttir
Source:
Journal of physical chemistry 2020 v.124 no.24 pp. 13082-13093
ISSN:
1932-7455
Subject:
Gibbs free energy; acetates; acetic acid; biomass; carbon dioxide; cleavage (chemistry); decarboxylation; dehydrogenation; density functional theory
Abstract:
... Acetic acid (CH₃COOH) decomposition over the Pd(111) surface is a good model system for decomposition of acids and small oxygenates common in biomass conversion. Here we present density functional theory calculations of the energy landscape of CH₃COOH decomposition on Pd(111), focusing on the reaction mechanism for acetic acid decarboxylation (DCX) and decarbonylation (DCN). Our results suggest th ...
DOI:
10.1021/acs.jpcc.0c00436

97. Determination of Pharmacologically Active Nitrogen-Containing Compounds on Silica Doubly Modified with 6,10-Ionene and Dextran Sulphate by High-Performance Liquid Chromatography–Tandem Mass Spectrometry

Author:
A. N. Ioutsi; V. A. Ioutsi; E. N. Shapovalova; O. A. Shpigun
Source:
Journal of analytical chemistry 2020 v.75 no.7 pp. 930-935
ISSN:
1061-9348
Subject:
acetaminophen; acetates; acetic acid; acetonitrile; active ingredients; adsorbents; ammonium acetate; anions; blood serum; caffeine; cations; dextran sulfate; high performance liquid chromatography; humans; hydrophilicity; hydrophobicity; ion exchange; medicinal properties; monitoring; pH; patients; silica; sulfates; tandem mass spectrometry
Abstract:
... An adsorbent for HPLC, silica doubly layer-by-layer modified with 6,10-ionene and dextran sulfate, is obtained. The adsorbent has both hydrophobic and hydrophilic and ion-exchange properties (because of the presence of hydrophobic anions and cations on the surface). A possibility of using the obtained adsorbent in HPLC with tandem mass spectrometric detection is shown. The conditions for the separ ...
DOI:
10.1134/S1061934820070096

98. Determination of the aroma changes of Zhengrong vinegar during different processing steps by SPME–GC–MS and GC-O

Author:
Sam Al-Dalali; Fuping Zheng; Baoguo Sun; Feng Chen; Peng Wang; Wenping Wang
Source:
Journal of food measurement & characterization 2020 v.14 no.1 pp. 535-547
ISSN:
2193-4126
Subject:
acetates; acetic acid; aldehydes; condiments; fermentation; filtration; flavor; gas chromatography-mass spectrometry; headspace analysis; hexanoic acid; odors; phenylacetic acid; pyrazines; solid phase microextraction; vinegars; volatile compounds; China
Abstract:
... Zhengrong vinegar is one of the renowned popular condiments in China, which has been consumed around Hebei province for about 136 years. Its different processing steps are considered as important and critical steps that are responsible for the generation of representative flavors besides the acetic acid. An HS-SPME coupled with GC–MS method was used to evaluate the changes of the volatiles of the ...
DOI:
10.1007/s11694-019-00298-y

99. Dietary and anthropometric factors affecting the potential of gut microbiota to utilize dietary fiber and produce short-chain fatty acids

Author:
Anna M. Malinowska; Marcin Schmidt; Malgorzata Majcher; Hanna Przydatek; Marta Szaban; Agata Kurowiecka
Source:
Proceedings of the Nutrition Society 2020 v.79 no.OCE2 pp. E253
ISSN:
1475-2719
Subject:
acetates; acetic acid; butyric acid; dietary fiber; digestive system; eating habits; energy intake; enzyme activity; feces; food intake; health status; hips; honey; humans; intestinal microorganisms; non-alcoholic beverages; pectins; propionic acid; refined grains; sugars; waist circumference; water solubility
Abstract:
... Some species of gut bacteria produce short-chain fatty acids (SCFAs) from dietary fiber—mainly acetate, propionate, and butyrate. The composition of human gut microbiota is dependent on dietary intake and health status. The aim of this study was to assess the effect of diet and anthropometric parameters on the potential of gut microbiota to metabolize dietary fiber and produce SCFA. A group of 200 ...
DOI:
10.1017/S0029665120002013

100. Effect of fermented sausages with probiotic Enterococcus faecium CRL 183 on gut microbiota using dynamic colonic model

Author:
Mariana Nougalli Roselino; Isabel Kimiko Sakamoto; Maria Angela Tallarico Adorno; Josiane Maria Márcia Canaan; Graciela Font de Valdez; Elizeu Antonio Rossi; Katia Sivieri; Daniela Cardoso Umbelino Cavallini
Source:
Lebensmittel-Wissenschaft + Technologie 2020 v.132 pp. 109876
ISSN:
0023-6438
Subject:
Bacteroides; Enterobacteriaceae; Enterococcus faecium; Lactobacillus; acetates; acetic acid; ammonium; butyrates; colon; fermentation; humans; intestinal microorganisms; metabolites; microbial ecology; models; nutrition; probiotics; propionic acid
Abstract:
... Considering the importance of nutrition in maintaining health conditions, this study is aimed at evaluating the effect of the consumption of a potentially probiotic sausage, with reduction of curing salts and fat, fermented with Enterococcus faecium CRL 183 into the gut microbiota, using the simulator of the human microbial ecosystem (SHIME®). The SHIME® experiment was performed using the probioti ...
DOI:
10.1016/j.lwt.2020.109876