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1. Bioactive compounds extraction from different lemongrass species: Strategies and deep eutectic solvents evaluation

Author:
Carlos E. B. Toazza; Fernando C. Leal; Caroline Marques; Grazielle Oliveira; Fabiane O. Farias; André L. D. Belan; Natalicio F. Leite; Marcos R. Mafra; Luciana Igarashi‐Mafra; Maria Lucia Masson
Source:
Journal of food process engineering 2022 v.45 no.5 pp. e14033
ISSN:
0145-8876
Subject:
Cymbopogon citratus; Cymbopogon flexuosus; Elionurus; acetic acid; acetone; antioxidant activity; antioxidants; citral; cosmetics; employment; ethanol; food chain; human health; magnetism; methanol; solvents; temperature; ultrasonics; wastewater
Abstract:
... Lemongrasses are known and used worldwide due to several benefits conferred to them regarding the high content of essential oils and other phenolic compounds, which are essential and nonessential compounds that occur in nature, are part of the food chain and present several benefits on human health. The obtaining of phenolic compounds from natural matrices requires the development of effective pro ...
DOI:
10.1111/jfpe.14033

2. Catalytic pyrolysis of cotton stalk to produce aromatic hydrocarbons over Fe modified CaO catalysts and ZSM-5

Author:
Xu Chen; Zihao Liu; Wei Chen; Haiping Yang; Hanping Chen
Source:
Journal of analytical and applied pyrolysis 2022 v.166 pp. 105635
ISSN:
0165-2370
Subject:
acetic acid; acetone; biomass; calcium oxide; cotton; furfural; lignin; pyrolysis; reaction mechanisms; surface area
Abstract:
... In this study, a novel method for the enhanced production of aromatic hydrocarbons by biomass pyrolysis with Fe modified CaO and ZSM-5 was proposed. The feasibility of aforementioned method and related reaction mechanism for the formation of aromatic hydrocarbons were investigated in Py-GC/MS. The results showed that Fe modification of CaO increased its specific surface area and generated Ca₂Fe₂O₅ ...
DOI:
10.1016/j.jaap.2022.105635

3. Construction and metabolic analysis of acetone-butanol-ethanol fermentation using mixed acetic acid and lactic acid in wastewater

Author:
Tao Zhao; Yukihiro Tashiro; Kenji Sonomoto
Source:
Industrial crops and products 2022 pp. 115503
ISSN:
0926-6690
Subject:
acetic acid; acetone; batch fermentation; butanol; carbon; glucose; lactic acid; lactic fermentation; pH; solvents; wastewater
Abstract:
... To reuse organic acids in wastewater, efficient acetone-butanol-ethanol (ABE) fermentation was constructed using mixed acetic acid and lactic acid. The mixed acids were co-consumed with glucose, producing higher butanol concentration (6.96g/L) and butanol yield (0.494 C-mol/C-mol) than using each single acid (6.22g/L and 0.432 C-mol/C-mol). This result was verified by ¹³C tracer experiment that ad ...
DOI:
10.1016/j.indcrop.2022.115503

4. Gas-Phase Reactivity of Phenylcarbyne Anions

Author:
Erlu Feng; Zaikuan J. Yu; Hanning Jiang; Xin Ma; John J. Nash; Hilkka I. Kenttämaa
Source:
Journal of the American Chemical Society 2022 v.144 no.19 pp. 8576-8590
ISSN:
1520-5126
Subject:
Lewis acids; acetic acid; acetone; acetonitrile; carbenes; dimethyl disulfide; spectrometers
Abstract:
... Gas-phase reactivities of the phenylcarbyne anion and its four derivatives were studied using a linear quadrupole ion trap mass spectrometer. The phenylcarbyne anions were calculated to have a triplet ground state (singlet–triplet splittings of 4–9 kcal mol–¹), with the exception of the 4-cyanophenylcarbyne anion that has a singlet ground state (singlet–triplet splitting of −1.9 kcal mol–¹). Only ...
DOI:
10.1021/jacs.1c13714

5. Green products from herbal medicine wastes by subcritical water treatment

Author:
Maryam Jouyandeh; Omid Tavakoli; Reza Sarkhanpour; S. Mohammad Sajadi; Payam Zarrintaj; Navid Rabiee; Omid Akhavan; Eder C. Lima; Mohammad Reza Saeb
Source:
Journal of hazardous materials 2022 v.424 pp. 127294
ISSN:
0304-3894
Subject:
COVID-19 infection; acetic acid; acetone; aspartic acid; cellobiose; formic acid; fructose; glucose; glycolic acid; herbal medicines; hot water treatment; hydrolysis; lactic acid; medicine; subcritical water treatment; temperature; threonine; total organic carbon
Abstract:
... Herbal medicine wastes (HMWs) are byproducts of medicine factories, which are mainly landfilled for their environmental problems. Only bearing in mind the contamination and concerns caused by the COVID-19 pandemic and environmental emissions, the worth of herbal medicine wastes management and conversion to green products can be understood. In this work, subcritical water treatment was carried out ...
DOI:
10.1016/j.jhazmat.2021.127294

6. Hydrogen production from steam reforming of acetic acid over Pt–Ni bimetallic catalysts supported on ZrO2

Author:
Isabella C.A. Souza; Robinson L. Manfro; Mariana M.V.M. Souza
Source:
Biomass and bioenergy 2022 v.156 pp. 106317
ISSN:
0961-9534
Subject:
acetic acid; acetone; acidity; biofuels; biomass; catalysts; catalytic activity; crystallites; hydrogen production; steam; temperature
Abstract:
... Acetic acid, a model compound of bio-oil, was chosen to investigate the H₂ production from steam reforming reaction using Pt and Ni catalysts supported on ZrO₂. Ni crystallite sizes decreased with addition of Pt (from 23 to 15 nm), increasing the metallic dispersion (from 4.4 to 6.5%). A spillover effect was identified in bimetallic catalysts and caused a significant decrease of Ni reduction tempe ...
DOI:
10.1016/j.biombioe.2021.106317

7. Spatiotemporal footprints of odor compounds in megacity’s food waste streams and policy implication

Author:
Liangmao Zhang; Binghan Wang; Zijiang Wang; Kaiyi Li; Ru Fang; Yinglong Su; Dong Wu; Bing Xie
Source:
Journal of hazardous materials 2022 v.437 pp. 129423
ISSN:
0304-3894
Subject:
acetaldehyde; acetic acid; acetone; air; ambient temperature; cities; food waste; human health; humidity; issues and policy; methylene chloride; multidimensional scaling; odors; seasonal variation; China
Abstract:
... Odor pollution is one of the most critical issues in food waste (FW) recycling and has significant implications for human health. However, knowledge of their occurrence and spatiotemporally dynamic in urban FW streams is limited, making it not conducive to implement targeted odor management. This work followed the occurrence of 81 odor compounds (OCs) in nine FW-air environments along the Shanghai ...
DOI:
10.1016/j.jhazmat.2022.129423

8. A chemo-enzymatic transformation of linalyl acetate to estragole, a phenyl propanoid ether using recombinant esterase in acetone reaction system

Author:
P Soumya; K Jayachandran
Source:
Process biochemistry 2022 pp. -
ISSN:
1359-5113
Subject:
Bacillus subtilis; Escherichia coli; acetates; acetic acid; acetone; enzymatic hydrolysis; enzymatic treatment; esterases; genes; hydrolysis; ligands; linalool; methyl chavicol; plasmids
Abstract:
... The esterase gene from Bacillus subtilis E9 was expressed in E. coli BL21 (DE3) using the pTAC Bs-est recombinant plasmid and the enzyme was purified to determine its biocatalytic ability on the natural ester, linalyl acetate. The substrate affinity of the esterase enzyme was confirmed through docking studies on the interaction between the modelled esterase protein with the ligand. Recombinant est ...
DOI:
10.1016/j.procbio.2022.08.008

9. The use of yeast‐rich kefir grain as a starter culture in bread making

Author:
Fatma Ataç; Bilge Ertekin Filiz; Zeynep B. Guzel‐Seydim
Source:
Journal of food processing and preservation 2022 v.46 no.5 pp. e15242
ISSN:
0145-8892
Subject:
Kluyveromyces marxianus; Saccharomyces cerevisiae; acetaldehyde; acetic acid; acetone; bakers yeast; breadmaking quality; ethanol; kefir; lactic acid; sourdough; sourdough bread; starter cultures
Abstract:
... To investigate the use of yeasts and lactic acid bacteria from natural kefir grain in bread making and its effects on dough and bread quality. The kefir grains were treated with different food‐based solutions to enrich the yeast content. Three kefir samples were produced with the treated grains (KAL and SIT) and the control (KEF) kefir grains (untreated). The yeasts isolated from the kefir samples ...
DOI:
10.1111/jfpp.15242

10. Characterization of a lignin-based gel responsive to aqueous binary solvents and pH

Author:
Shogo Taira; Yuriko Usukura; Mitsukuni Nishida; Kengo Shigetomi; Yasumitsu Uraki
Source:
Holzforschung 2021 v.75 no.8 pp. 765-772
ISSN:
1437-434X
Subject:
absorbents; acetic acid; acetone; ethanol; gels; hardwood; isopropyl alcohol; lignin; methanol; moieties; pH; solvents; tetrahydrofuran
Abstract:
... A lignin-based gel (AL-PE gel) was obtained from hardwood acetic acid lignin (AL) and poly(ethylene glycol) diglycidyl ether (PE) as a cross-linker at a high AL concentration, while the reaction at a lower AL concentration yielded an amphipathic derivative (am-AL-PE). The gel has been reported to swell in aqueous ethanol but shrink in pure water and ethanol. In the present work, swelling behaviors ...
DOI:
10.1515/hf-2020-0220

11. Kinetic and reaction mechanism of generated by-products in a photocatalytic oxidation reactor: Model development and validation

Author:
Mojtaba Malayeri; Chang-Seo Lee; Jianjun Niu; Jiping Zhu; Fariborz Haghighat
Source:
Journal of hazardous materials 2021 v.419 pp. 126411
ISSN:
0304-3894
Subject:
acetaldehyde; acetic acid; acetone; air pollution; carbon dioxide; commercialization; ethanol; formaldehyde; human health; irradiation; mass transfer; mineralization; model validation; models; oxidation; photocatalysis; pollutants; reaction mechanisms; relative humidity; risk; silica
Abstract:
... Photocatalytic oxidation is a promising technology to control air pollution. However, the formation of hazardous by-products hinders the commercialization application of this technology. This paper reports the development of a novel by-products predictive model considering the mass transfer of the pollutant in the gas phase and kinetic reaction in the solid phase. Two challenge compounds from keto ...
DOI:
10.1016/j.jhazmat.2021.126411

12. Recyclable regeneration of NiO/NaF catalyst: Hydrogen evolution via steam reforming of oxygen-containing volatile organic compounds

Author:
Yan Ding; Yi Cai; Peiwen Li; Sasa Gu; Shixing Song; Jie Guan; Yuesong Shen; Yuchen Han; Weiyi He
Source:
Energy conversion and management 2022 v.258 pp. 115456
ISSN:
0196-8904
Subject:
acetic acid; acetone; activation energy; administrative management; adsorption; carbon; catalysts; catalytic activity; density functional theory; electric field; energy conversion; ethanol; ethyl acetate; formaldehyde; formic acid; hydrogen production; methanol; nickel oxide; steam; surface area; temperature; volatile organic compounds
Abstract:
... Regenerable NiO/NaF catalysts break the limitation that catalyst with low specific surface area is difficult to obtain high catalytic activity. In this paper, we investigated the feasibility and universal applicability of hydrogen evolution from different oxygen-containing volatile organic compounds (OVOCs) such as methanol, formaldehyde, formic acid, ethanol, acetic acid, acetone and ethyl acetat ...
DOI:
10.1016/j.enconman.2022.115456

13. Stationary monitoring and source apportionment of VOCs in a chemical industrial park by combining rapid direct-inlet MSs with a GC-FID/MS

Author:
Yinzhi Huang; Song Gao; Shijian Wu; Xiang Che; Yong Yang; Junjie Gu; Wen Tan; Dinghua Ruan; Guangli Xiu; Qingyan Fu
Source:
Science of the total environment 2021 v.795 pp. 148639
ISSN:
0048-9697
Subject:
acetic acid; acetone; acetonitrile; air quality; chlorobenzene; data collection; environment; ethyl acetate; ethylene dichloride; ozone; styrene; time series analysis; toluene; China
Abstract:
... Fast and comprehensive monitoring of VOCs, required for air quality management in large-scale chemical industrial parks in China, cannot be accomplished by stationary measurements using conventional GC-FID or GC–MS alone due to their low temporal resolutions and limited detectable ranges. Novel direct-inlet mass spectrometry (DI-MS) has been widely applied for real-time monitoring of VOCs. To veri ...
DOI:
10.1016/j.scitotenv.2021.148639

14. Ultrasound-Assisted Nonthermal, Nonequilibrium Separation of Organic Molecules from Their Binary Aqueous Solutions: Effect of Solute Properties on Separation

Author:
Haripriya Naidu; Junli Liu; Ozan Kahraman; Hao Feng
Source:
ACS sustainable chemistry & engineering 2021 v.9 no.48 pp. 16506-16518
ISSN:
2168-0485
Subject:
1-propanol; acetic acid; acetone; butanol; distillation; energy; ethanol; ethylene glycol; glucose; glycerol; green chemistry; hydrophobicity; methanol; mists; solubility; solutes; sucrose; surface tension; ultrasonic treatment; ultrasonics; vapor pressure; vapors; viscosity
Abstract:
... The separation of organic molecules in downstream processes, such as distillation, plays a vital role in biobased chemical production. A comprehensive study was performed here using ultrasonic energy to separate 11 organic molecules from their binary aqueous solutions under nonthermal, nonequilibrium, and phase-change free conditions. A batch sonoseparator with a three-stage mist collection unit a ...
DOI:
10.1021/acssuschemeng.1c06793

15. An antibody-free LC-MS/MS method for the quantification of intact insulin-like growth factors 1 and 2 in human plasma [Erratum: August 2021, Vol.413(21), p.5529]

Author:
Mark S. Pratt; Martijn van Faassen; Noah Remmelts; Rainer Bischoff; Ido P. Kema
Source:
Analytical and bioanalytical chemistry 2021 v.413 no.8 pp. 2035-2044
ISSN:
1618-2642
Subject:
acetic acid; acetone; acetonitrile; analytical chemistry; biomarkers; chemical species; dissociation; electrospray ionization mass spectrometry; ethanol; humans; immunoassays; quantitative analysis; reference standards; spectrometers
Abstract:
... Insulin-like growth factors 1 and 2 (IGF-1 and IGF-2) are important biomarkers in research and diagnosis of growth disorders. Quantitative analysis is performed using various ligand-binding assays or enzymatic digestion LC-MS/MS methods, whose widespread adoption is hampered by time-consuming sample preparation procedures. We present a simple and fast antibody-free LC-MS/MS method for the quantifi ...
DOI:
10.1007/s00216-021-03185-y

16. An effect blending of acetone and acetic acid as bio-oil model compound for steam reforming reaction over Ce doped LaNi0.8Fe0.2O3-based perovskite

Author:
Chenlong Liu; Plaifa Hongmanorom; Jangam Ashok; Dong Chen; Qiao Wu; Wenju Wang; Zhigang Wang
Source:
Biomass and bioenergy 2021 v.151 pp. 106177
ISSN:
0961-9534
Subject:
Fourier transform infrared spectroscopy; X-radiation; X-ray diffraction; acetic acid; acetone; adsorption; biofuels; biomass; carbon; catalysts; catalytic activity; desorption; hydrogen production; models; steam; synthesis gas; temperature
Abstract:
... Conversion of biomass tar to useful hydrogen-rich syngas will solve environmental issues related to tar emission as well as increase the overall efficiency of biomass conversion. There are various catalysts to achieve that. In this study, La₁₋ₓCeₓNi₀.₈Fe₀.₂O₃ (0 ≤ x ≤ 1) is selected, and acetic acid has been used as a biomass tar model. Fixed-bed reactor was used for this investigation, while the ...
DOI:
10.1016/j.biombioe.2021.106177

17. Antioxidant capacity of blackcurrant (Ribes nigrum L.) leaves and buds

Author:
Cs. Orbán; É. Kis; Cs. Albert; É. Molnos
Source:
Acta Universitatis Sapientiae, Alimentaria 2021 v.14 no.1 pp. 117-129
ISSN:
2066-7744
Subject:
Ribes nigrum; acetic acid; acetone; antioxidant activity; black currants; cultivars; ethanol; free radicals; harvest date; methanol
Abstract:
... The antioxidant capacity is the combined free radical scavenging effect of all antioxidant compounds found in the studied system. There is a growing need for accurate, numerical determination of this capacity (for easier comparison), so there are many analytical procedures, methods, and measurement systems available to researchers. Neither one is able to model the totality of real, naturally occur ...
DOI:
10.2478/ausal-2021-0007

18. Biochemical Properties Affecting the Nutritional Quality, Safety, and Aroma of Dry-Cured Products Manufactured from Meat of Rare Native Pig Breeds

Author:
Ewelina Węsierska; Joanna Sobolewska-Zielińska; Małgorzata Pasternak; Katarzyna Niemczyńska-Wróbel; Robert Gąsior; Krzysztof Wojtycza; Henryk Pustkowiak; Iwona Duda; Władysław Migdał
Source:
Foods 2021 v.10 no.7 pp. -
ISSN:
2304-8158
Subject:
acetic acid; acetone; arginine; cadaverine; cured meats; decarboxylation; ethanol; histamine; histidine; lactic acid; lipid peroxidation; lysine; meat; microbial activity; nutritive value; odors; oxidation; pH; phenylacetaldehyde; putrescine; swine; tryptamine; tyramine
Abstract:
... The aim of study was to compare the biochemical properties affecting the nutritional quality, safety, and aroma of dry-cured products manufactured from valuable meat of rare native pig breeds: Pulawska (Pul) and Zlotnicka Spotted (ZS). The count of lactic acid bacteria (4.4 log cfu/g) and the release of palmitic (23.1% and 25.9%), oleic (44.1% and 42.2%), and linoleic acids (8.3% and 7.8%), as wel ...
DOI:
10.3390/foods10071597

19. Catalytic Behavior of Co-Based Catalysts in the Kinetic Study of Acetic Acid Steam Reforming

Author:
Pedro J. Megía; Marta Cortese; Concetta Ruocco; Arturo J. Vizcaíno; José A. Calles; Alicia Carrero; Vincenzo Palma
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.44 pp. 19531-19538
ISSN:
1520-5045
Subject:
acetic acid; acetone; carbon dioxide; catalysts; catalytic activity; hydrogen production; kinetics; methane; models; process design; steam; temperature
Abstract:
... A kinetic model of acetic acid steam reforming is presented in this work on Co-based catalysts, accounting for the products distribution due to the main and side reactions. The Cr-promoted catalyst exhibited enhanced hydrogen yield and reduced methane selectivity in comparison to the chromium-free samples. The kinetic study was carried out in the presence of the chromium-containing catalyst betwee ...
DOI:
10.1021/acs.iecr.0c03599

20. Combined UV-irradiation and pyrolysis-GC/MS approach for evaluating the deterioration behavior of ethylene vinyl acetate

Author:
Kanako Yamada; Shogo Kumagai; Toshikazu Shiratori; Tomohito Kameda; Yuko Saito; Atsushi Watanabe; Chuichi Watanabe; Norio Teramae; Toshiaki Yoshioka
Source:
Polymer degradation and stability 2021 v.190 pp. 109623
ISSN:
0141-3910
Subject:
Fourier transform infrared spectroscopy; acetaldehyde; acetic acid; acetone; anhydrides; carbon dioxide; degradation; ethylene-vinyl acetate; irradiation; lactones; pyrolysis gas chromatography; thermal stability; thermogravimetry; ultraviolet radiation
Abstract:
... Ethylene vinyl acetate (EVA), commonly used to encapsulate photovoltaic (PV) modules, deteriorates on prolonged exposure to sunlight. In this work, fresh and deteriorated EVA samples prepared by UV irradiation (500 W m⁻²) over different periods (0–168 h) are characterized by conventional elemental analysis, microscopic observations, Fourier transform infrared (FT-IR) spectroscopy, and thermogravim ...
DOI:
10.1016/j.polymdegradstab.2021.109623