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Journal of Agricultural and Food Chemistry

Yunika Mayangsari, Takuya Suzuki
This study is aimed to investigate the ameliorative effect of resveratrol in a dextran sodium sulfate (DSS)-induced colitis mouse model and intestinal Caco-2 cells, focusing on neutrophil infiltration and tight junction (TJ) barriers. DSS administration caused body weight loss (day8, control 104±1, DSS 72±2 % , p<0.05), shortening of colon length (control 5.1±0.1, DSS 3.8±0.1 cm, p<0.05), pro-inflammatory cytokines increase-including interleukin (IL)-1β (control 1.0±0.2, DSS 58.5±29.6 arbitrary unit (AU), p<0...
November 14, 2018: Journal of Agricultural and Food Chemistry
Liwen Wang, Guliang Yang, Li Yuan, Yiwen Yang, Hui Zhao, Chi-Tang Ho, Shiming Li
Polyphenols derived from green tea have been reported to have a wide range of profound functions. Tea catechins, including epicatechin (EC), epigallocatechin (EGC), epicatechin-3-O-gallate (ECG) and epigallocatechin-3-O-gallate (EGCG), are considered as the major bioactive polyphenols in tea. The present study was designed to elucidate the potential antifibrogenic role of three abundant tea catechins (ECG, EGC, EGCG) in CCl4-induced fibrotic rat and its underlying molecular mechanisms. Tea catechins, especially groups of ECG, EGC and EGCG, effectively induced several beneficial alterations of liver injury markers, oxidative status and liver histology...
November 13, 2018: Journal of Agricultural and Food Chemistry
Zeinah Elhaj Baddar, Jason M Unrine
This study investigated the potential of ZnO-nanoparticle (NP) seed treatments for enhancing Zn nutrition in wheat ( Triticum aestivum). We tested bare, ZnO core Zn3 (PO4 )2 shell, dextran (DEX)-coated, and dextran sulfate (DEX(SO4 ))-coated ZnO NPs and ZnSO4 solution as an ionic control. We measured root and shoot Zn concentrations, lengths, biomasses, and seed germination upon termination of the assay. All ZnO NPs were more effective than ZnSO4 in increasing tissue Zn concentrations and seedling growth. Exposure to higher concentrations of ZnSO4 significantly decreased growth and germination rates relative to those of the controls and the ZnO-NP groups, whereas none of the ZnO NPs significantly affected seed germination...
November 13, 2018: Journal of Agricultural and Food Chemistry
Long Zhang, Ping Hang, Qiang Hu, Xiao-Long Chen, Xi-Yi Zhou, Kai Chen, Jian-Dong Jiang
Phenylurea herbicides (PHs) are frequently detected as major water contaminants in areas where there is extensive use. In this study, Diaphorobacter sp. strain LR2014-1, which initially hydrolyzes linuron to 3,4-dichloroanaline, and Achromobacter sp. strain ANB-1, which further mineralizes the produced aniline derivatives, were isolated from a linuron-mineralizing consortium despite being present at low abundance in the community. The synergistic catabolism of linuron by the consortium containing these two strains resulted in more efficient catabolism of linuron and growth of both strains...
November 13, 2018: Journal of Agricultural and Food Chemistry
Silvia Marzocchi, Maria Fiorenza Caboni
Tyrosyl oleate (TO), synthesized using oleic acid and tyrosol, was added to the original receipt of tarallini, to evaluate its antioxidant effectiveness. Lipid oxidation in control sample and samples with 1%, 4%, and 7% of TO at different storage times (0, 15, 30, 37, and 45 days) was evaluated. Accelerated oxidation analysis showed that the control sample took more than four times to complete the oxidation compared tarallini with TO. The control sample and tarallini with 1% of TO exceeded the peroxide value limit after 30 days of storage and the other two final products after 45 days...
November 13, 2018: Journal of Agricultural and Food Chemistry
Yajing Qi, Hui Zhang, Hao Zhang, Gangcheng Wu, Li Wang, Haifeng Qian, Xiguang Qi
This study aimed to investigate the inhibitory mechanism of epicatechin (EC) on the formation of acrylamide in Maillard reactions. The glucose + asparagine model is a typical chemical system used to investigate acrylamide formation. 5-Hydroxymethylfurfural (HMF) is an important carbonyl intermediate in Maillard reactions and can also react with asparagine to form acrylamide. Time courses showed that EC inhibited more HMF than acrylamide in the glucose + asparagine model heated at 180 °C. The reduction of EC on acrylamide formation in the HMF + asparagine model was about 70%, while that in the glucose + asparagine model was about 50%...
November 13, 2018: Journal of Agricultural and Food Chemistry
Yong Min Lee, Mi Kyoung Kim, Hyunah Choo, Youhoon Chong
Given the importance of (-)-epigallocatechin gallate (EGCG) as an autophagy-enhancing and thereby lipid-lowering agent, optimization of its activity warrants its therapeutic potential in the treatment of hepatic diseases as well as metabolic disorders. Based on our previous observations that structural modifications provided substantial improvements in the bioactivity of EGCG, we investigated the autophagy-enhancing activity of EGCG derivatives. Among 14 EGCG derivatives, E10 with a phenylalanine attached to the D-ring of the EGCG exhibited the most promising effects in stimulating autophagy in Huh7 cells, which was supported by several lines of evidence: 1) stimulation of autophagy revealed by an increased amount of LC3B-II (4...
November 12, 2018: Journal of Agricultural and Food Chemistry
Huiying Li, Huaigu Yang, Peng Li, Yizhen Wang, Guoxin Huang, Lei Xing, Jiaqi Wang, Nan Zheng
To investigate the effect of heat treatment on the anti-tumor activity of lactoferrin in colon cancer cells and colon tumors, the HT-29 (human intestinal epithelial tumor cell) cell line was exposed to lactoferrin and various heat treatments. The impacts on cell proliferation, invasion as well as migration was observed in vitro, and nude mice bearing HT29 tumors were administered lactoferrin and underwent various heat treatments in vivo. In the HT29 cell proliferation test using transwell and scratch analyses, lactoferrin (20 mg/mL) without or with heat treatment (50℃ and 70℃) significantly inhibited cell proliferation, migration and invasion (compared with the control, p<0...
November 12, 2018: Journal of Agricultural and Food Chemistry
Hari C Meher, Ghanendra Singh, Gautam Chawla
Preplanting foliar spray of salicylic acid (SA) (0.0, 5.0, and 10.0 μg/mL) to Solanum lycopersicum (L.) altered the metabolite profile of amino acids, γ-aminobutyric acid (GABA), and SA in leaf, root, and fruits. Free amino acid pools increased; bound amino acid pools reduced. In vegetative tissues, amino acid biosyntheses linked to osmo-compatibility (Pro, Leu, Val and GABA); N (Arg, Asn, Asp, Gln, and Glu); C (Pro, Ser, and Tyr); S (Cys) assimilation; stress tolerance (Ala, Gly, Hyp, His, Lys, Met, and Thr); and central metabolism (Phe, Trp, and Tyr) enhanced for 60-120 days...
November 12, 2018: Journal of Agricultural and Food Chemistry
Fabio Henrique Krenchinski, Caio Antonio Carbonari, Victor José Salomão Cesco, Alfredo Júnior Paiola Albrecht, Mariana de Lara Campos Arcuri, Ivan de Godoy Maia, Edivaldo Domingues Velini
Phosphinothricin acetyltransferase (pat) gene confers resistance to glufosinate by transforming this herbicide into N-acetyl-L-glufosinate (NAG). The pat gene was inserted in six maize hybrids (Herculex, Agrisure TL, Herculex Yieldgard, Leptra, Viptera 3, Power Core) as a selectable marker, and its expression was evaluated by qPCR in comparison with the maize glufosinate-susceptible cultivar VTPRO. In addition, the levels of NAG, glufosinate degradation, ammonia accumulation, electron transport rate (ETR), visual injury, and biomass were also investigated...
November 12, 2018: Journal of Agricultural and Food Chemistry
Nieves Carolina Comelli, Oscar E Romero, Patricia A Diez, Claudia Fidelis Marinho, Pablo Schliserman, Adrian Carrizo, Erlinda V Ortiz, Pablo R Duchowicz
Essential oils from six species of aromatic plants collected in Catamarca province, Argentina, were evaluated for their chemical composition and repellent and insecticidal activities against beetles of the genus Carpophilus (Coleoptera: Nitidulidae) and Oryzaephilus (Coleoptera: Silvanidae), infesting the local walnuts production. Experimental data were analyzed using Generalized Estimating Equations, with normal distribution and the identity link function. From the tested essential oils spectral information, we worked their molecular modeling as mixtures by developing mixture descriptors (Dmix) that combined the molecular descriptor of each component in the mixture (di) and its relative concentration (xi), i...
November 12, 2018: Journal of Agricultural and Food Chemistry
Agustian Surya, Xiaoji Liu, Michael J Miller
Glutathione, a tripeptide antioxidant, has recently been shown to be either utilized or synthesized by gram-positive bacteria, such as Lactic Acid Bacteria. Glutathione plays an important role in countering environmental stress, such as oxidative stress. In this study, cellular activity regarding glutathione in Lactobacillus fermentum CECT 5716 is characterized. We demonstrate that L. fermentum CECT 5716 has a better survival rate in the presence of glutathione under both oxidative and metal stress. As L. fermentum CECT 5716 does not possess the ability to synthesize glutathione under the conditions tested, it shows the ability to uptake both reduced and oxidized glutathione from the environment, regenerate reduced glutathione from oxidized glutathione, and perform secretion of glutathione to the environment...
November 12, 2018: Journal of Agricultural and Food Chemistry
Ashraf M El-Sayed, C Rikard Unelius, David M Suckling
Three varieties of honey of different dominant floral origin were found to attract social Hymenoptera, including large earth bumble bee, Bombus terrestris in a New Zealand's mountain beech forest. This study was undertaken to identify volatile organic compounds that induce the attraction of bumble bees to honeybee (Apis mellifera) honey. We have analyzed the chemical composition of the volatile organic compounds produced in three distinct varieties of honey (i.e. mānuka, honeydew and clover honey). The composition of the chemical profile of the three honey varieties differed in the quality and in the ratio of compounds in the headspace...
November 12, 2018: Journal of Agricultural and Food Chemistry
Huipei Liang, Xiaoli Qin, Chin Ping Tan, Daoming Li, Yonghua Wang
Docosahexaenoyl and eicosapentaenoyl ethanolamides (DHEA and EPEA) have physiological functions, including immunomodulation, brain development, and anti-inflammation, but their efficient production is still unresolved. In this study, choline-chloride-based natural deep eutectic solvents are used as media to improve the production of DHEA and EPEA. The water content showed a key effect on the reactant conversion. Adding water to choline chloride-glucose (CG, molar ratio of 5:2) led to a significant increase (13...
November 12, 2018: Journal of Agricultural and Food Chemistry
Ayako Sanekata, Atsushi Tanigawa, Kiyoshi Takoi, Yasuyuki Nakayama, Youichi Tsuchiya
Hops are natural ingredients used to impart bitterness and flavor to beer. Recently, new varieties of hops have attracted global research attention. The Sorachi Ace variety, in particular, interests many craft brewers. This hop imparts characteristic varietal aromas, including woody, pine-like, citrus, dill-like, and lemongrass-like, to finished beers. Here, we investigated specific flavor compounds derived from Sorachi Ace using selectable one-dimensional or two-dimensional gas chromatography-olfactometry/mass spectrometry and head space-solid phase microextraction-gas chromatography-mass spectrometry...
November 12, 2018: Journal of Agricultural and Food Chemistry
Lingshuai Meng, Guang Xin, Bin Li, Dongnan Li, Xiyun Sun, Tingcai Yan, Li Li, Lin Shi, Sen Cao, Xianjun Meng
We investigated the cytoprotective effects of anthocyanins in Aronia melanocarpa against apoptosis induced by Aβ1-42, a key mediator of AD pathophysiology. We measured intracellular calcium with a colorimetric kit, cellular apoptosis with DAPI, intracellular ROS with the fluorescent marker 2,3-dimethoxy-1, 4-naphthoquinone, mitochondrial membrane potential with JC-1, and ATP with a colorimetric kit. Gene transcription and protein expression levels of calmodulin, cytochrome c, caspase-9, cleaved caspase-3, Bcl-2, and Bax were analyzed by RT-PCR and western blotting...
November 11, 2018: Journal of Agricultural and Food Chemistry
Carla Sá, Diogo Pestana, Conceição Calhau, Ana Faria
Hypertension is a multifactorial disease with limited knowledge of the involved mechanisms. p,p'-DDE (p,p'-dichlorodiphenyldichloroethylene) is a pollutant commonly found in tissues that interferes with endocrine signalling. This study aimed to evaluate the mechanism of hypertension triggered by p,p'-DDE exposure in presence or absence of HF-diet, in rats. The renin-angiotensin system (RAS) was evaluated by qPCR in liver and adipose tissue (AT) and a transcriptome analysis comparing visceral AT of HF-diet and HF/DDE groups was performed...
November 10, 2018: Journal of Agricultural and Food Chemistry
Min-Hsiung Pan, Jin-Wun Chen, Zwe-Ling Kong, Jia-Ching Wu, Chi-Tang Ho, Ching-Shu Lai
Diet-induced obesity is strongly associated with non-alcoholic fatty liver disease (NAFLD) and insulin resistance. We aimed to investigate in vivo therapeutic value of THC intervention in high fat diet (HFD)-induced obesity and hepatic steatosis. C57BL/6 mice were fed a HFD for 10 weeks and then received 20 or 100 mg/kg THC with continuation on a HFD for another 10 weeks. Mice fed a HFD for 20 weeks experienced obesity, hepatic steatosis, hyperlipidemia, and insulin resistance. Tetrahydrocurcumin (THC) intervention for 10 weeks significantly reduced adiposity (epididymal fat weight, 6...
November 10, 2018: Journal of Agricultural and Food Chemistry
Agnieszka Kumorkiewicz, Edward Szneler, Slawomir Wybraniec
Formation of glutathionic conjugates with quinonoid forms generated through oxidation of betanidin and gomphrenin obtained from fruits of Basella alba L. was studied by high performance liquid chromatography coupled with tandem mass spectrometry (HPLC-DAD-ESI-MS/MS) and high-resolution mass spectrometry (LCMS-IT-TOF). The conjugates were studied for the aim of trapping of the formed quinonoids by glutathione which would indicate a presence of specific quinonoid structures in reaction products of the pigments with ABTS cation radicals...
November 10, 2018: Journal of Agricultural and Food Chemistry
Hanyue Zhu, Zouyan He, Erika Kwek, Jianhui Liu, Wangjun Hao, Ning Liang, Yimin Zhao, Ka Ying Ma, Wen-Sen He, Zhen-Yu Chen
It remains inconclusive regarding the dose-dependent effect of egg consumption on plasma cholesterol in humans. It is unknown if egg white consumed in a normal amount can reduce plasma cholesterol. We used hamsters as a model to (i) investigate the dose-dependent effect of consuming 0 to 5 whole eggs on plasma total cholesterol (TC), and (ii) examine if egg white equivalent to 1-5 eggs possessed any reducing effect on plasma TC. In experiment 1, hamsters were divided into 6 groups (n=8 each) and fed either a control diet or five experimental diets supplemented with whole egg powders equivalent to 1 to 5 eggs/2000 kcal...
November 10, 2018: Journal of Agricultural and Food Chemistry
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