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- Author:
- Danilewicz, John C; Tunbridge, Peter; Kilmartin, Paul A.
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4145-4153
- ISSN:
- 1520-5118
- Subject:
- adsorption; electrochemistry; electrodes; ethanol; oxidation; oxygen; platinum; red wines; reducing agents; winemaking
- Abstract:
- ... During its production wine can react with substantial amounts of aerial oxygen. Some oxidation can be beneficial, especially in red wine, but if allowed to occur in excess it is highly detrimental, making oxygen management an important aspect of wine making. The use of reduction potentials at platinum electrodes to measure the redox state of wines extends back over 80 years. The premise is that re ...
- DOI:
- 10.1021/acs.jafc.9b00127
-
http://dx.doi.org/10.1021/acs.jafc.9b00127
- Author:
- Yu, Xiaoting; Chen, Ligang; Tang, Mingjie; Yang, Zhongbo; Fu, Ailing; Wang, Zhanzhong; Wang, Huabin
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4273-4279
- ISSN:
- 1520-5118
- Subject:
- adhesion; analytical kits; biomechanics; cell viability; curcumin; dose response; drugs; elastic deformation; image analysis; neurons; synapse; viability assays
- Abstract:
- ... In this work, the effects of curcumin on the viability, morphology, and nanomechanics of SH-SY5Y neuronal cells were investigated using a conventional cell viability test kit (CCK-8) and sophisticated AFM imaging and force measurement techniques. CCK-8 tests show that SH-SY5Y neuronal cells have a dose–response to curcumin in terms of viability that is dependent on the exposure durations. When exp ...
- DOI:
- 10.1021/acs.jafc.9b00314
-
http://dx.doi.org/10.1021/acs.jafc.9b00314
- Author:
- Ren, Wei; Liu, Le; Gu, Lide; Yan, Wanli; Feng, Yan li; Dong, Dongxue; Wang, Shujun; Lyu, Mingsheng; Wang, Changhai
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4355-4366
- ISSN:
- 1520-5118
- Subject:
- Arthrobacter oxidans; active sites; amino acid sequences; aquatic bacteria; crystal structure; dextranase; mutants; sequence analysis; thermal stability
- Abstract:
- ... The crystal structure of Dextranase from the marine bacterium Arthrobacter oxidans KQ11 (Aodex) was determined at a resolution of 1.4 Å. The crystal structure of the conserved Aodex fragment (Ala52–Thr638) consisted of an N-terminal domain N and a C-terminal domain C. The N-terminal domain N was identified as a β-sandwich, connected to a right-handed parallel β-helix at the C-terminus. Sequence co ...
- DOI:
- 10.1021/acs.jafc.9b01290
-
http://dx.doi.org/10.1021/acs.jafc.9b01290
- Author:
- Yang, Liu; Hu, Xing Ping; Allan, Sandra A.; Alborn, Hans T.; Bernier, Ulrich R.
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4177-4183
- ISSN:
- 1520-5118
- Subject:
- Megacopta cribraria; Pueraria montana var. lobata; adults; benzaldehyde; bioassays; container-grown plants; dose response; electroantennography; electrophysiology; gas chromatography-mass spectrometry; headspace analysis; insect attractants; integrated pest management; monitoring; ocimene; octenol; olfactometers; pests; semiochemicals; soybeans; volatile compounds; United States
- Abstract:
- ... The kudzu bug, Megacopta cribraria, is a key pest of soybean in the United States. Electrophysiological and behavioral responses of adult M. cribraria to kudzu and soybean volatile compounds were examined to identify semiochemicals used for host location. Headspace volatiles collected from undamaged potted plants were analyzed by gas chromatography with electroantennographic detection (GC–EAD). Su ...
- DOI:
- 10.1021/acs.jafc.8b06765
- CHORUS:
- 10.1021/acs.jafc.8b06765
-
http://dx.doi.org/10.1021/acs.jafc.8b06765
- Author:
- Yang, Kunlong; Liu, Yinghang; Wang, Sen; Wu, Lianghuan; Xie, Rui; Lan, Huahui; Fasoyin, Opemipo Esther; Wang, Yu; Wang, Shihua
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4200-4213
- ISSN:
- 1520-5118
- Subject:
- Aspergillus flavus; biosynthesis; cAMP-dependent protein kinase; conidiation; cyclic AMP; fungi; genes; hyphae; mutants; mycotoxins; pathogens; phosphorylation; sclerotia; spore germination; virulence; virulent strains
- Abstract:
- ... In Aspergillus, the cyclic adenosine monophosphate (cAMP) signaling modulates asexual development and mycotoxin biosynthesis. Here, we characterize the cyclase-associated protein Cap in the pathogenic fungus Aspergillus flauvs. The cap disruption mutant exhibited dramatic reduction in hyphal growth, conidiation, and spore germination, while an enhanced production of the sclerotia was observed in t ...
- DOI:
- 10.1021/acs.jafc.8b07115
-
http://dx.doi.org/10.1021/acs.jafc.8b07115
- Author:
- Agarwal, Umesh P.; Ralph, Sally A.; Padmakshan, Dharshana; Liu, Sarah; Foster, Cliff E.
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4367-4374
- ISSN:
- 1520-5118
- Subject:
- Raman spectroscopy; biomass; cell walls; dioxane; fluorescence; lignin; lignin content; lignocellulose; models; nuclear magnetic resonance spectroscopy; quantitative analysis; thioacidolysis; wood
- Abstract:
- ... Syringyl (S) lignin content and the syringyl-to-guaiacyl (S/G) lignin ratio are important characteristics of wood and lignocellulosic biomass. Although numerous methods are available for estimating S lignin units and the S/G ratio, in this work, a new method based on Raman spectroscopy that uses the 370 cm–¹ Raman band-area intensity (370-area) was developed. The reliability of the Raman approach ...
- DOI:
- 10.1021/acs.jafc.8b06707
-
http://dx.doi.org/10.1021/acs.jafc.8b06707
- Author:
- Zhang, Yumin; Sun, Qichao; Zhang, Chunxia; Hao, Guanglong; Wang, Chunmei; Dirk, Lynnette M. A.; Downie, A. Bruce; Zhao, Tianyong
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4214-4223
- ISSN:
- 1520-5118
- Subject:
- biosynthesis; corn; gene expression regulation; mutants; pollination; protoplasts; raffinose; seeds; transcriptomics; vigor
- Abstract:
- ... Raffinose, an oligosaccharide found in many seeds, plays an important role in seed vigor; however, the regulatory mechanism governing raffinose biosynthesis remains unclear. We report here that maize W22 wild type (WT) seeds, but not W22 viviparous1 (zmvp1) mutant seeds, start accumulating galactinol and raffinose 28 days after pollination (DAP). Transcriptome analysis of the zmvp1 embryo showed t ...
- DOI:
- 10.1021/acs.jafc.9b00322
- CHORUS:
- 10.1021/acs.jafc.9b00322
-
http://dx.doi.org/10.1021/acs.jafc.9b00322
- Author:
- Ispiryan, Lilit; Heitmann, Mareile; Hoehnel, Andrea; Zannini, Emanuele; Arendt, Elke K.
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4384-4392
- ISSN:
- 1520-5118
- Subject:
- anion exchange; chromatography; detection limit; enzymatic hydrolysis; foods; fructans; fructose; glucose; ingredients; polymerization; polyols; pseudocereals; wheat
- Abstract:
- ... This study presents an analytical method for the quantification of fermentable oligo-, di-, and monosaccharides and polyols (FODMAPs) in cereals and cereal-based products, considering diverse ingredients, such as different cereals in addition to wheat, pulses, or pseudocereals. All carbohydrates have been separated, identified, and quantified with a high-performance anion-exchange chromatographic ...
- DOI:
- 10.1021/acs.jafc.9b00382
-
http://dx.doi.org/10.1021/acs.jafc.9b00382
- Author:
- Salger, Mathias; Stark, Timo D.; Hofmann, Thomas
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4311-4320
- ISSN:
- 1520-5118
- Subject:
- cocoa beans; dipeptides; fractionation; high performance liquid chromatography; models; moieties; pH; screening; solvents; synergism; tandem mass spectrometry; taste sensitivity; tripeptides; ultra-performance liquid chromatography; umami
- Abstract:
- ... Activity-guided fractionation of an aqueous extract of overfermented cocoa beans, which were recently found to be a rich source of previously unknown taste enhancing substances, revealed the presence of a series of taste modulating short peptides. Fractionation was achieved by means of sequential solvent extraction, medium pressure liquid chromatography, as well as preparative high pressure liquid ...
- DOI:
- 10.1021/acs.jafc.9b00905
-
http://dx.doi.org/10.1021/acs.jafc.9b00905
- Author:
- Sun, Gaojie; Zhang, Mingliang; Liu, Xiaoan; Gao, Qinqin; Jiang, Wankui; Zhou, Yidong; Wang, Hui; Cui, Mengdi; Qiu, Jiguo; Xu, Jianhong; Hong, Qing
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4170-4176
- ISSN:
- 1520-5118
- Subject:
- Pseudomonas; bacterial culture; biodegradation; carbon; chemical bonding; hydrolysis; hydroxylation; niacin; pH; pymetrozine
- Abstract:
- ... In this study, we isolated and characterized the bacterial strain Pseudomonas sp. BYT-1, which is capable of degrading pymetrozine and using it as the sole carbon source for growth. Strain BYT-1 could degrade 2.30 mM pymetrozine within 20 h under the optimal conditions of 30 °C and pH 7.0. Investigation of the degradation pathway showed that pymetrozine was oxidatively hydrolyzed to 4-amino-6-meth ...
- DOI:
- 10.1021/acs.jafc.8b06155
-
http://dx.doi.org/10.1021/acs.jafc.8b06155
- Author:
- Wei, Qing; Zhang, Biying; Li, Ping; Wen, Xiaodong; Yang, Jie
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4259-4272
- ISSN:
- 1520-5118
- Subject:
- AMP-activated protein kinase; animal models; antineoplastic activity; apoptosis; azoxymethane; carcinogenesis; cell proliferation; colon; colorectal neoplasms; dextran sulfate; mice; olives; rapamycin; signal transduction; triterpenoids
- Abstract:
- ... Maslinic acid (MA), a natural triterpenoid abundant in olives, has a variety of bioactivities. However, its effects and mechanisms on colorectal cancer (CRC) still need to be explored. This research evaluated the effects of MA on CRC progression from the aspect of the adenosine monophosphate (AMP)-activated protein kinase (AMPK)–mammalian target of rapamycin (mTOR) pathway. MA inhibited the prolif ...
- DOI:
- 10.1021/acs.jafc.9b00170
-
http://dx.doi.org/10.1021/acs.jafc.9b00170
- Author:
- Zhu, Xu; Wang, Yi-Kun; Yang, Xiao-Nan; Xiao, Xue-Rong; Zhang, Ting; Yang, Xiu-Wei; Qin, Hong-Bo; Li, Fei
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4328-4336
- ISSN:
- 1520-5118
- Subject:
- acetylcysteine; cytochrome P-450; cytotoxicity; hepatocytes; humans; maleates; medicinal plants; metabolism; metabolomics; mice; screening; spices
- Abstract:
- ... Myristicin is widely distributed in spices and medicinal plants. The aim of this study was to explore the role of metabolic activation of myristicin in its potential toxicity through a metabolomic approach. The myristicin–N-acetylcysteine adduct was identified by comparing the metabolic maps of myristicin and 1′-hydroxymyristicin. The supplement of N-acetylcysteine could protect against the cytoto ...
- DOI:
- 10.1021/acs.jafc.9b00893
-
http://dx.doi.org/10.1021/acs.jafc.9b00893
- Author:
- Xie, Xinyu; Gao, Xintong; Pan, Chaonan; Wei, Zimin; Zhao, Yue; Zhang, Xu; Luo, Sheng; Cao, Jinxiang
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4184-4192
- ISSN:
- 1520-5118
- Subject:
- animal manures; composting; environmental impact; fluorescence; humin; microorganisms; models; spectroscopy; straw; structural equation modeling
- Abstract:
- ... Humin (HM) is a complex mixture of molecules produced in the different biological processes, and the structural evolution of HM in the agricultural wastes composting are not well-known. Elucidating and comparing the structural evolution during livestock manure (LMC) and straw wastes (SWC) composting can help one to better understand the fates, features, and environmental impacts of HM. This study ...
- DOI:
- 10.1021/acs.jafc.8b07007
-
http://dx.doi.org/10.1021/acs.jafc.8b07007
- Author:
- Zhang, Zhongyuan; Nie, Meimei; Liu, Chunquan; Jiang, Ning; Liu, Chunju; Li, Dajing
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4280-4288
- ISSN:
- 1520-5118
- Subject:
- Citrus; agonists; beta-carotene; catechol; cell membranes; flavanones; glycosylation; human cell lines; membrane permeability; membrane proteins; moieties; peroxisome proliferator-activated receptor gamma; structure-activity relationships; tight junctions
- Abstract:
- ... Flavonoids can interfere with the absorption of carotenoids. In this study, the inherent mechanisms of 12 citrus flavanones for β-carotene (Bc) cellular uptake and the structure–activity relationship were investigated. The results showed that multiple hydroxyl groups had the lowest promoting effect. O-Glycosylation at C7 of the A ring led to the greatest promoting effect on Bc absorption. O-Glycos ...
- DOI:
- 10.1021/acs.jafc.9b01376
-
http://dx.doi.org/10.1021/acs.jafc.9b01376
- Author:
- Wang, Qiang; Cao, Tian-Jun; Zheng, Hui; Zhou, Chang-Fang; Wang, Zhong; Wang, Ran; Lu, Shan
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4300-4310
- ISSN:
- 1520-5118
- Subject:
- Capsicum annuum var. annuum; biosynthesis; capsanthin; enzymes; flowers; fruits; genes; humans; leaves; lutein; lycopene; messenger RNA; metabolic engineering; phytonutrients; ripening
- Abstract:
- ... Carotenoids are essential phytonutrients for the human body. Higher plants usually synthesize and accumulate carotenoids in their leaves, flowers, and fruits. Most carotenoids have either two β-rings on both ends or β- and ε-rings separately on two ends of their molecules and are synthesized from the acyclic lycopene as the precursor. Lycopene β- and ε-cyclases (LCYB and LCYE, respectively) cataly ...
- DOI:
- 10.1021/acs.jafc.9b00756
-
http://dx.doi.org/10.1021/acs.jafc.9b00756
- Author:
- Wang, Weiwei; Pan, Yiou; Wang, Li; Zhou, Hang; Song, Ge; Wang, Yongwei; Liu, Jianxue; Li, Aike
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4250-4258
- ISSN:
- 1520-5118
- Subject:
- animal disease models; feed conversion; ferulic acid; glucose; high fat diet; homeostasis; intestinal microorganisms; lipids; mice; obesity; obesity-related diseases; weight control; white adipose tissue
- Abstract:
- ... Ferulic acid (FA) is a major polyphenolic compound and has been shown to improve the glucose and lipid homeostasis in high-fat diet-induced obese mice. Here, we found the optimal level of dietary FA to ameliorate obesity and obesity-correlated disorders, and identified the responses of gut microbiota to dietary FA in genetic leptin-deficient obese (ob/ob) mice. The ob/ob mice exhibited persistent ...
- DOI:
- 10.1021/acs.jafc.8b06760
-
http://dx.doi.org/10.1021/acs.jafc.8b06760
- Author:
- Yu, Xiuling; Zhang, Yu; Liu, Yuxiu; Li, Yongqiang; Wang, Qingmin
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4224-4231
- ISSN:
- 1520-5118
- Subject:
- Helicoverpa armigera; Tetranychidae; acaricidal properties; boring insects; eggs; etoxazole; insecticidal properties; larvae; lethal concentration 50; moieties; plant protection; structure-activity relationships
- Abstract:
- ... Sulfimides and sulfoximines are highly relevant for medicinal chemistry and crop protection, as the resulting products can reveal interesting bioactivities. Herein, we report the design and synthesis of a series of novel 2,4-diphenyl-1,3-oxazolines containing sulfiliminyl and sulfoximinyl moieties. The acaricidal and insecticidal activities of the new compounds were evaluated and indicated that th ...
- DOI:
- 10.1021/acs.jafc.9b00657
-
http://dx.doi.org/10.1021/acs.jafc.9b00657
- Author:
- Sontag, Gerhard; Pinto, Maria I.; Noronha, João P.; Burrows, Hugh D.
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4113-4144
- ISSN:
- 1520-5118
- Subject:
- batch systems; derivatization; electrochemistry; electrodes; food chemistry; high performance liquid chromatography; mass spectrometry; metabolomics; oxidation; pesticides; pharmacokinetics; phenolic compounds; photochemical reactions; vitamins
- Abstract:
- ... The development of single coulometric cells in combination with high performance liquid chromatography to dual cells and to the coulometric electrode array detector is described. An overview is given about the application of these methods in food chemistry. Easily oxidizable compounds, such as phenolic substances, pesticides, or vitamins, can be determined, as well as substances with high oxidatio ...
- DOI:
- 10.1021/acs.jafc.9b00003
-
http://dx.doi.org/10.1021/acs.jafc.9b00003
- Author:
- Mao, Genlin; Tian, Yongqing; Sun, Zheng; Ou, Jianlin; Xu, Hanhong
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4232-4239
- ISSN:
- 1520-5118
- Subject:
- Brassica rapa subsp. oleifera; Brucea javanica; Chinese cabbage; Plutella xylostella; Spodoptera exigua; Spodoptera littoralis; Spodoptera litura; antifeedants; antifeeding activity; azadirachtin; chemical constituents of plants; flowering; growth retardation; ingredients; insect larvae; insecticides; insects; instars; leaves; pests; pupae; roots
- Abstract:
- ... Systemicity is a desirable property for insecticides. Many phytochemicals show good systemic properties and thus are natural sources of novel systemic insecticidal ingredients. Bruceine D, a quassinoid, was identified in Brucea javanica (L.) Merr. and displayed outstanding systemic properties and excellent antifeedant activity against the diamondback moth (DBM, Plutella xylostella L.), beet armywo ...
- DOI:
- 10.1021/acs.jafc.8b06511
-
http://dx.doi.org/10.1021/acs.jafc.8b06511
- Author:
- Tang, Tao; Ji, Chenyang; Xu, Zhenlan; Zhang, Changpeng; Zhao, Meirong; Zhao, Xueping; Wang, Qiang
- Source:
- Journal of agricultural and food chemistry 2019 v.67 no.15 pp. 4160-4169
- ISSN:
- 1520-5118
- Subject:
- biodegradation; endocrine-disrupting chemicals; environmental assessment; flooded conditions; irrigation; models; risk assessment; sewage; sludge; soil water; soil water content; temperature; total organic carbon
- Abstract:
- ... Levonorgestrel (LNG) and quinestrol (QUN) are typical endocrine disruptors that enter the soil via sewage irrigation and sludge return. However, the fates of both compounds in soil are not well-understood. Laboratory microcosm studies were conducted to fill the gap of understanding of LNG and QUN behavior in soils. High values of goodness-of-fit indices (GFIs) were obtained using the double-first- ...
- DOI:
- 10.1021/acs.jafc.8b04788
-
http://dx.doi.org/10.1021/acs.jafc.8b04788