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1. Real-world emission characteristics of carbonyl compounds from agricultural machines based on a portable emission measurement system

Author:
Wenhan Yu; Xianbao Shen; Bobo Wu; Lei Kong; Kaijie Xuan; Cheng Zhao; Xinyue Cao; Xuewei Hao; Xin Li; Hanyu Zhang; Zhiliang Yao
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 846-859
ISSN:
1001-0742
Subject:
acetaldehyde,   etc   ; acrolein; emissions factor; formaldehyde; high performance liquid chromatography; smog pollution; tillage; China;     Show all 8 Subjects
Abstract:
... Emissions of carbonyl compounds from agricultural machines cannot be ignored. Carbonyl compounds can cause the formation of ozone (O₃) and secondary organic aerosols, which can cause photochemical smog to form. In this study, 20 agricultural machines were tested using portable emission measurement system (PEMS) under real-world tillage processes. The exhaust gases were sampled using 2,4-dinitrophe ...
DOI:
10.1016/j.jes.2022.02.031

2. Conversion of aqueous ethanol/acetaldehyde mixtures into 1,3-butadiene over a mesostructured Ta-SBA-15 catalyst: Effect of reaction conditions and kinetic modelling

Author:
G.M. Cabello González; A.L. Villanueva Perales; A. Martínez; M. Campoy; F. Vidal-Barrero
Source:
Fuel processing technology 2022 v.226 pp. 107092
ISSN:
0378-3820
Subject:
acetaldehyde,   etc   ; catalysts; catalytic activity; ethanol; feedstocks; kinetics; temperature;     Show all 7 Subjects
Abstract:
... This paper studies key issues for the design of industrial ethanol to 1,3-butadiene two-step processes, focusing on the second catalytic reaction step, for which a Ta-SBA-15 catalyst was chosen as a representative of the new generation of two-step catalysts. The important practical aspects studied were: i) the effect of operating conditions and the presence of impurities (water) in the ethanol fee ...
DOI:
10.1016/j.fuproc.2021.107092

3. Hydrothermal processing of polyethylene-terephthalate and nylon-6 mixture as a plastic waste upcycling treatment: A comprehensive multi-phase analysis

Author:
Ran Darzi; Yael Dubowski; Roy Posmanik
Source:
Waste management 2022 v.143 pp. 223-231
ISSN:
0956-053X
Subject:
acetaldehyde,   etc   ; depolymerization; liquids; polyethylene terephthalates; solvents; toxicity; wastes;     Show all 7 Subjects
Abstract:
... Accumulation of plastic waste is harming eco-systems and it is time to move towards a circular plastic economy. Sustainable production and recycling processes for plastics are challenged mostly by the lack of renewable building blocks. This study investigates hydrothermal processing (HTP) as a platform for depolymerization of two commonly used plastic polymers. Subcritical water (300 °C; 10 MPa) w ...
DOI:
10.1016/j.wasman.2022.03.002

4. Configurations and Sensory Properties of the Stereoisomers of 2,6-Dimethyl-4-propyl-1,3-oxathiane and 2,4-Dimethyl-6-propyl-1,3-oxathiane

Author:
Anja Devenie Riegel; Hidehiko Wakabayashi; Motoko Wakabayashi; Markéta Rynešová; Viktoriia Dudko; Wolfgang Eisenreich; Karl-Heinz Engel
Source:
Journal of agricultural and food chemistry 2022 v.70 no.15 pp. 4712-4724
ISSN:
1520-5118
Subject:
acetaldehyde,   etc   ; capillary gas chromatography; food chemistry; heterocyclic compounds; mushrooms; odors; olfactometry; stereoisomers;     Show all 8 Subjects
Abstract:
... The heterocyclic compounds 2,6-dimethyl-4-propyl-1,3-oxathiane 1 and 2,4-dimethyl-6-propyl-1,3-oxathiane 2 were obtained by condensing 4-mercapto-2-heptanol and 2-mercapto-4-heptanol, respectively, with acetaldehyde. For both, separation of the eight stereoisomers was achieved via capillary gas chromatography using heptakis(diethyl-tert-butyldimethylsilyl)-β-cyclodextrin as the chiral stationary p ...
DOI:
10.1021/acs.jafc.2c00509

5. Can aldehyde accumulation rates of red wines undergoing oxidation be predicted in accelerated conditions? The controverted role of aldehyde–polyphenol reactivity

Author:
Almudena Marrufo‐Curtido; Vicente Ferreira; Ana Escudero
Source:
Journal of the science of food and agriculture 2022 v.102 no.9 pp. 3869-3878
ISSN:
0022-5142
Subject:
acetaldehyde,   etc   ; agriculture; anthocyanins; hypoxia; oxidation; oxygen consumption; phenylacetaldehyde; polyphenols; shelf life; temperature; winemaking;     Show all 11 Subjects
Abstract:
... BACKGROUND: The accumulation of acetaldehyde and Strecker aldehydes during wine oxidation is detrimental to quality and often determines wine shelf‐life. Knowing in advance the specific tendency of a wine to accumulate these compounds would help decision making during winemaking. An accelerated test based on a forced oxidation procedure at 45 °C (5 days) to measure aldehyde accumulation rates (AAR ...
DOI:
10.1002/jsfa.11736

6. Cell-Free CO₂ Valorization to C6 Pharmaceutical Precursors via a Novel Electro-Enzymatic Process

Author:
Joshua Jack; Haigen Fu; Aaron Leininger; Todd K. Hyster; Zhiyong Jason Ren
Source:
ACS sustainable chemistry & engineering 2022 v.10 no.13 pp. 4114-4121
ISSN:
2168-0485
Subject:
acetaldehyde,   etc   ; bioreactors; carbon dioxide; drug therapy; electrodes; ethanol; green chemistry; health services; industry;     Show all 9 Subjects
Abstract:
... The healthcare industry emits significant amounts of CO₂ and has an imperative need for decarbonization. This study demonstrated a new hybrid electro-enzymatic process that converts waste CO₂ into high-value C6 pharmaceutical precursor compounds. A novel three-chamber electrolyzer equipped with a Cu-based gas diffusion electrode converted gaseous CO₂ into ethanol at a high current density (40–60 m ...
DOI:
10.1021/acssuschemeng.1c06746

7. Uniform Mesoporosity Development in Incorporated β Zeolite: Dual-Template Strategy

Author:
Xiuqin Dong; Weilin Wang; Guochao Yang; Lingtao Wang
Source:
Industrial & engineering chemistry process design and development 2022 v.61 no.12 pp. 4255-4263
ISSN:
1520-5045
Subject:
acetaldehyde,   etc   ; Lewis acids; catalytic activity; ethanol; porosity; porous media; process design; surfactants; zeolites;     Show all 9 Subjects
Abstract:
... The hierarchical porosity of zeolite is a key factor affecting its catalytic activity and stability for bulky molecules involved reactions. However, it is still challenging to introduce mesoporosity into heteroatom-incorporated zeolites in a facile manner while maintaining the catalytic activity. In this work, a strategy for mesoporosity development in incorporated zeolites based on two templates ...
DOI:
10.1021/acs.iecr.1c04886

8. Proton-transfer-reaction mass spectrometry (PTR-MS) for online monitoring of glucose depletion and cell concentrations in HEK 293 gene therapy processes

Author:
Benjamin Bayer; Andreas Maccani; Johanna Jahn; Mark Duerkop; Ewald Kapeller; Robert Pletzenauer; Barbara Kraus; Gerald Striedner; Juan A. Hernandez Bort
Source:
Biotechnology letters 2022 v.44 no.1 pp. 77-88
ISSN:
0141-5492
Subject:
acetaldehyde,   etc   ; Dependoparvovirus; biotechnology; capacitance; cell culture; gene therapy; glucose; mass spectrometry; process control; transfection;     Show all 10 Subjects
Abstract:
... OBJECTIVES: The applicability of proton-transfer-reaction mass spectrometry (PTR-MS) as a versatile online monitoring tool to increase consistency and robustness for recombinant adeno-associated virus (rAAV) producing HEK 293 bioprocesses was evaluated. We present a structured workflow to extract process relevant information from PTR-MS data. RESULTS: Reproducibility of volatile organic compound ( ...
DOI:
10.1007/s10529-021-03205-y

9. Study on the atomic scale of thermal and thermo-oxidative degradation of polylactic acid via reactive molecular dynamics simulation

Author:
Chenyang Li; Qiang Liu; Weiguang Gong; Zhou Zhou; Zhongyang Yao; Xin Meng
Source:
Thermochimica acta 2022 v.709 pp. 179144
ISSN:
0040-6031
Subject:
acetaldehyde,   etc   ; carbon; carbon dioxide; carbon monoxide; homolytic cleavage; molecular dynamics; polylactic acid; thermal degradation;     Show all 8 Subjects
Abstract:
... The reactive force field molecular dynamics (ReaxFF-MD) simulations were performed on polylactic acid (PLA) for the first time to understand its thermal and thermo-oxidative degradation mechanisms. The main degradation products of PLA observed in actual experiments were well reproduced by ReaxFF-MD simulations. The results showed that the initial thermal degradation pathway for the PLA was the hom ...
DOI:
10.1016/j.tca.2021.179144

10. Cold plasmas combined with Ar-based MAP for meatball products: Influence on microbiological shelflife and quality attributes

Author:
Ran Li; Heyuan Zhu; Yongfang Chen; Guanghong Zhou; Chunbao Li; Keping Ye
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.159 pp. 113137
ISSN:
0023-6438
Subject:
acetaldehyde,   etc   ; Acinetobacter; benzaldehyde; benzene; cold; lipid peroxidation; nonthermal processing; odors; shelf life; total volatile basic nitrogen;     Show all 10 Subjects
Abstract:
... This study was to evaluate the cold plasma treated times (0, 3, 6, and 9 min) combining with Ar-based MAP on the microbiological shelflife and quality attributes in meatballs. Results showed that Ar-6 min and Ar-9 min groups could significantly decrease the initial counts of microorganism by 1.02 and 1.19 log CFU/g in meatballs, respectively, besides the shelf-life was prolonged for 14 days. Compa ...
DOI:
10.1016/j.lwt.2022.113137

11. Effect of microoxygenation on acetaldehyde, yeast and colour before and after malolactic fermentation on Pinot Noir wine

Author:
Y. Yang; R.C. Deed; L.D. Araujo; A.L. Waterhouse; P.A. Kilmartin
Source:
Australian journal of grape and wine research 2022 v.28 no.1 pp. 50-60
ISSN:
1322-7130
Subject:
acetaldehyde,   etc   ; absorbance; anthocyanins; color; dissolved oxygen; grapes; malolactic fermentation; oxidation; oxygen; polymers; research; winemaking; wines; yeasts;     Show all 14 Subjects
Abstract:
... BACKGROUND AND AIMS: Microoxygenation (MOX) is widely used in winemaking. Its impact, however, on Pinot Noir wines has not been well documented. We investigated the influence of MOX on colour parameters and on the anthocyanin and polymeric pigment concentration of a young Pinot Noir wine. The relationship between MOX, yeast growth and acetaldehyde production was also explored. METHODS AND RESULTS: ...
DOI:
10.1111/ajgw.12512

12. The same genetic regulation strategy produces inconsistent effects in different Saccharomyces cerevisiae strains for 2-phenylethanol production

Author:
Zhiwei Xu; Lucheng Lin; Zhe Chen; Kun Wang; Jie Sun; Tingheng Zhu
Source:
Applied microbiology and biotechnology 2022 v.106 no.11 pp. 4041-4052
ISSN:
0175-7598
Subject:
acetaldehyde dehydrogenase,   etc   ; CRISPR-Cas systems; Saccharomyces cerevisiae; acetyltransferases; biotechnology; diploidy; genes; haploidy; microbiology; mutants; phenylethyl alcohol;     Show all 11 Subjects
Abstract:
... A CRISPR/Cas9 system with gene editing efficiency of 100% in the industrial diploid Saccharomyces cerevisiae CWY-132 strain for 2-phenylethanol (2-PE) production was constructed. The effect of deletion of acetyltransferase gene ATF1 in the Ehrlich pathway on 2-PE synthesis was studied for the first time in S. cerevisiae. Laboratory and industrial strains were compared for the deletion effect of AT ...
DOI:
10.1007/s00253-022-11993-0

13. Assessing Impacts of Additives on Particulate Matter and Volatile Organic Compounds Produced from the Grilling of Meat

Author:
Xingyun Liu; Wei Xing; Zhaoyang Xu; Xiaomin Zhang; Hui Zhou; Kezhou Cai; Baocai Xu; Conggui Chen
Source:
Foods 2022 v.11 no.6 pp. -
ISSN:
2304-8158
Subject:
acetaldehyde,   etc   ; Piper nigrum; acetone; aerosols; flavor; formaldehyde; garlic; meat; molecular weight; particulate emissions; particulates; volatile organic compounds;     Show all 12 Subjects
Abstract:
... Cooking fumes are an important source of volatile organic compounds (VOCs), particulate matter (PM), and carbonyl compounds. The additive is wildly applied in grilling meat for flavor improvement. However, the effects of additives on cooking fumes emissions, such as volatile organic compounds (VOCs), particulate matter (PM), and carbonyl compounds, in meat grilling have not been studied. The impac ...
DOI:
10.3390/foods11060833

14. Traffic, transport, and vegetation drive VOC concentrations in a major urban area in Texas

Author:
Sujan Shrestha; Subin Yoon; Matthew H. Erickson; Fangzhou Guo; Manisha Mehra; Alexander A.T. Bui; Benjamin C. Schulze; Alexander Kotsakis; Conner Daube; Scott C. Herndon; Tara I. Yacovitch; Sergio Alvarez; James H. Flynn; Robert J. Griffin; George P. Cobb; Sascha Usenko; Rebecca J. Sheesley
Source:
Science of the total environment 2022 v.838 pp. 155861
ISSN:
0048-9697
Subject:
acetaldehyde,   etc   ; acetone; air quality; environment; ethane; industry; isoprene; methane; metropolitan areas; oils; photooxidation; pollution; traffic; vegetation; Texas;     Show all 15 Subjects
Abstract:
... The population of Texas has increased rapidly in the past decade. The San Antonio Field Study (SAFS) was designed to investigate ozone (O₃) production and precursors in this rapidly changing, sprawling metropolitan area. There are still many questions regarding the sources and chemistry of volatile organic compounds (VOCs) in urban areas like San Antonio which are affected by a complex mixture of ...
DOI:
10.1016/j.scitotenv.2022.155861

15. Application of white grape pomace in the brewing technology and its impact on the concentration of esters and alcohols, physicochemical parameteres and antioxidative properties of the beer

Author:
Alan Gasiński; Joanna Kawa-Rygielska; Dawid Mikulski; Grzegorz Kłosowski; Adam Głowacki
Source:
Food chemistry 2022 v.367 pp. 130646
ISSN:
0308-8146
Subject:
acetaldehyde,   etc   ; antioxidant activity; beers; byproducts; fermentation; food chemistry; gallic acid; grape pomace; wastes; white wines; wine industry; winemaking;     Show all 12 Subjects
Abstract:
... Main by-product of white wine production is white grape pomace (WGP). It has attracted attention of food scientists, because it possesses high concentration of nutrients and bioactive substances. In this study, WGP was added to the beer after primary fermentation in two different concentrations (10% w/w and 20% w/w) and two different pretreatments (pasteurised and unpasteurised) to determine, whet ...
DOI:
10.1016/j.foodchem.2021.130646

16. Effect of frozen storage on some characteristics of kefir samples made from cow’s and goat’s milk

Author:
Ercan Sarica; Hayri Coşkun
Source:
Food science and technology international 2022 v.28 no.2 pp. 157-168
ISSN:
1532-1738
Subject:
acetaldehyde,   etc   ; Lactobacillus; Lactococcus; Leuconostoc; acidity; cows; flavor; food science; frozen storage; goat milk; goats; kefir; milk; pH; viscosity;     Show all 15 Subjects
Abstract:
... This study was aimed to determine the changes in kefir samples (CK and GK) made from cow’s and goat’s milk during frozen storage. The CK and GK samples were first stored at +4 °C for 14 and 21 days. Thereafter, all the samples were frozen at –35 °C for 24 h and kept at –18 °C for 45 days. There was no significant change in the fat, protein, acidity and pH values in both samples during the storage. ...
DOI:
10.1177/10820132211003710

17. Enhanced butanol production in Clostridium acetobutylicum by manipulating metabolic pathway genes

Author:
Guangqing Du; Youduo Wu; Wei Kang; Yongping Xu; Shuying Li; Chuang Xue
Source:
Process biochemistry 2022 v.114 pp. 134-138
ISSN:
1359-5113
Subject:
acetaldehyde,   etc   ; Clostridium acetobutylicum; acetoacetic acid; acetone; alcohol dehydrogenase; biobutanol; biochemical pathways; biosynthesis; butanol; fermentation; genes; histidine kinase; mutants;     Show all 13 Subjects
Abstract:
... Biobutanol is naturally produced by solventogenic clostridia during acetone-butanol-ethanol (ABE) fermentation, which is hampered by low butanol titer, yield and productivity. Here, Clostridium acetobutylicum ATCC 55025 and its robust mutant HKKO with histidine kinase genes cac3319/cac0323 knockout were metabolically engineered to eliminate acetone formation and improve butanol production. By knoc ...
DOI:
10.1016/j.procbio.2022.01.021

18. Investigating aldehyde and ketone compounds produced from indoor cooking emissions and assessing their health risk to human beings

Author:
Wei Zhang; Zhe Bai; Longbo Shi; Jung Hyun Son; Ling Li; Lina Wang; Jianmin Chen
Source:
Journal of environmental sciences (China) 2022 pp. -
ISSN:
1001-0742
Subject:
acetaldehyde,   etc   ; acetone; acrolein; air; air quality; environmental hazards; hazard characterization; human health; humans; inhalation exposure; risk; tomatoes; China;     Show all 13 Subjects
Abstract:
... Aldehyde and ketone compounds are ubiquitous in the air and prone to adverse effects on human health. Cooking emission is one of the major indoor sources. Aiming to evaluate health risks associated with inhalation exposure to aldehyde and ketone compounds, 13 carbonyl compounds (CCs) released from heating 5 edible oils, 3 seasonings, and 2 dishes were investigated in a kitchen laboratory. For the ...
DOI:
10.1016/j.jes.2022.05.033

19. Drought effects on volatile organic compound emissions from Scots pine stems

Author:
Kaisa Rissanen; Juho Aalto; Arthur Gessler; Teemu Hölttä; Andreas Rigling; Marcus Schaub; Jaana Bäck
Source:
Plant, cell and environment 2022 v.45 no.1 pp. 23-40
ISSN:
0140-7791
Subject:
acetaldehyde,   etc   ; Pinus sylvestris; acetone; adsorbents; atmospheric chemistry; drought; environment; forests; irrigation; methanol; monoterpenoids; summer; temperature; trees; volatile organic compounds;     Show all 15 Subjects
Abstract:
... Tree stems have been identified as sources of volatile organic compounds (VOCs) that play important roles in tree defence and atmospheric chemistry. Yet, we lack understanding on the magnitude and environmental drivers of stem VOC emissions in various forest ecosystems. Due to the increasing importance of extreme drought, we studied drought effects on the VOC emissions from mature Scots pine (Pinu ...
DOI:
10.1111/pce.14219

20. Engineering a Balanced Acetyl Coenzyme A Metabolism in Saccharomyces cerevisiae for Lycopene Production through Rational and Evolutionary Engineering

Author:
Buli Su; Peixuan Lai; Fan Yang; Anzhang Li; Ming-Rong Deng; Honghui Zhu
Source:
Journal of agricultural and food chemistry 2022 v.70 no.13 pp. 4019-4029
ISSN:
1520-5118
Subject:
acetaldehyde dehydrogenase,   etc   ; Saccharomyces cerevisiae; acetyl coenzyme A; acetyl-CoA acetyltransferase; acetyl-CoA carboxylase; food chemistry; lycopene; metabolism; mevalonic acid;     Show all 9 Subjects
Abstract:
... Saccharomyces cerevisiae is increasingly being used for the production of chemicals derived from acetyl coenzyme A (acetyl-CoA). However, the inadequate supply of cytosolic acetyl-CoA often leads to low yields. Here, we developed a novel strategy for balancing acetyl-CoA metabolism and increasing the amount of the downstream product. First, the combination of acetaldehyde dehydrogenase (eutE) and ...
DOI:
10.1021/acs.jafc.2c00531