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Journal of Agricultural and Food Chemistry

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https://www.readbyqxmd.com/read/28437606/transfer-study-of-silver-nanoparticles-in-poultry-production
#1
Federica Gallocchio, Giancarlo Biancotto, Veronica Cibin, Carmen Losasso, Simone Belluco, Ruud Peters, Greet van Bemmel, Claudia Cascio, Stefan Weigel, Peter Tromp, Federica Gobbo, Salvatore Catania, Antonia Ricci
Silver nanoparticles (AgNPs) are of interest due to their antimicrobial activity and are seen as potential candidates to replace antibiotics in animal husbandry. A few studies have focused on this new application, but they lack any considerations about residual accumulation of AgNPs in edible animal tissues and animal products. In this research a 22-days in vivo study was carried out by oral administration of 20 nm spherical PVP coated AgNPs to hens. Six doses of approximately 1 mg kg-1 of AgNPs-PVP each were administered to animals throughout the experimentation...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28436658/chemical-composition-and-acetylcholinesterase-inhibitory-activity-of-essential-oils-from-piper-species
#2
Cai-Peng Xiang, Jia-Xin Han, Xing-Cong Li, Yun-Hui Li, Yi Zhang, Lin Chen, Yan Qu, Chao-Yun Hao, Hai-Zhou Li, Chong-Ren Yang, San-Jun Zhao, Min Xu
The essential oils (EOs) derived from aromatic plants such as Piper species are considered to play a role in alleviating neuronal ailments that are associated with inhibition of acetylcholinesterase (AChE). The chemical compositions of 23 EOs prepared from 16 Piper spp. were analyzed by both gas chromatography with aflame ionization detector (GC-FID) and gas chromatography-mass spectrometry (GC-MS). A total of 76 compounds were identified in the EOs from the leaves and stems of 19 samples, while 30 compounds were detected in the EOs from the fruits of four samples...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28436656/cellulose-anionic-hydrogels-based-on-cellulose-nanofibers-as-natural-stimulants-for-seed-germination-and-seedling-growth
#3
Hao Zhang, Minmin Yang, Qian Luan, Hu Tang, Fenghong Huang, Xia Xiang, Chen Yang, Yuping Bao
Cellulose anionic hydrogels were successfully prepared from dissolving Tempo-oxidized cellulose nanofibers in NaOH/urea aqueous solution and then crosslinked with epichlorohydrin. The hydrogels exhibit microporous structure and high hydrophilicity, contribute to the excellent water absorption property. The growth indexes including the germination rate, root length, shoot length, fresh weight and dry weight of seedlings were investigated and the cellulose anionic hydrogel showed no significant difference compared with soil medium...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28436225/watsonianone-a-from-rhodomyrtus-tomentosa-fruit-attenuates-respiratory-syncytial-virus-induced-inflammation-in-vitro
#4
Ling Zhuang, Li-Feng Chen, Yu-Bo Zhang, Zhong Liu, Xu-Hui Xiao, Wei Tang, Guo-Cai Wang, Wen-Jun Song, Yao-Lan Li, Man-Mei Li
Respiratory syncytial virus (RSV) is one of the most common respiratory pathogens. Immoderate inflammation plays a great role in causing RSV-induced diseases. In the present study, watsonianone A, isolated from the fruit of Rhodomyrtus tomentosa (Ait.) Hassk, was found to show a good inhibitory effect on RSV-induced NO production, with a half-maximal inhibitory concentration of 37.2 ± 1.6 μM. Enzyme-linked immunosorbent assay and fluorescence quantitative polymerase chain reaction analyses indicated that watsonianone A markedly reduced both mRNA and protein levels of tumor necrosis factor α, interleukin 6, and monocyte chemoattractant protein 1 in RSV-infected RAW264...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28434228/rapid-biodegradation-of-the-herbicide-2-4-dichlorophenoxyacetic-acid-by-cupriavidus-gilardii-t-1
#5
Xiangwei Wu, Wenbo Wang, Junwei Liu, Dandan Pan, Xiaohui Tu, Pei Lv, Yi Wang, Haiqun Cao, Yawen Wang, Rimao Hua
Phytotoxicity and environmental pollution of residual herbicides have caused much public concern during the past several decades. An indigenous bacterial strain capable of degrading 2,4-dichlorophenoxyacetic acid (2,4-D), designated T-1, was isolated from soybean field soil and identified as Cupriavidus gilardii. The strain T-1 degraded 2,4-D 3.39 times faster than the model strain Cupriavidus necator JMP134. T-1 could also efficiently degrade 2-methyl-4-chloro-phenoxyacetic acid (MCPA), MCPA isooctyl ester, and 2-(2,4-dicholrophenoxy)-propionic acid (2,4-DP)...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28434227/how-proteins-aggregate-can-reduce-allergenicity-comparison-of-ovalbumin-heated-under-opposite-electrostatic-conditions
#6
Mathilde Claude, Grégory Bouchaud, Roberta Lupi, Laure Castan, Olivier Tranquet, Sandra Denery-Papini, Marie Bodinier, Chantal Brossard
Heated foods are recommended for avoiding sensitization to food proteins but depending on the physicochemical conditions during heating, more or less unfolded proteins aggregate differently. Whether the aggregation process could modulate allergenicity was investigated. Heating ovalbumin in opposite electrostatic conditions led to small (A-s, about 50 nm) and large (A-L, about 65 µm) aggregates that were used to sensitize mice. The symptoms upon oral challenge and RBL degranulation with native ovalbumin differed based on which aggregates were used during the sensitization...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28420234/raman-spectroscopy-of-fish-oil-capsules-pufa-quantitation-plus-detection-of-ethyl-esters-and-oxidation
#7
Daniel P Killeen, Susan N Marshall, Elaine J Burgess, Keith C Gordon, Nigel B Perry
Fish oils are the primary dietary source of ω-3 polyunsaturated fatty acids (PUFA), but these compounds are prone to oxidation, and commercial fish oil supplements sometimes contain less PUFA than claimed. These supplements are predominantly sold in softgel capsules. In this work we show that Fourier-Transform (FT)-Raman spectra of fish oils (n=5) and ω-3 PUFA concentrates (n=6) can be acquired directly through intact softgel (gelatin) capsules. These spectra could be used to rapidly distinguish supplements containing ethyl esters from those triacylglyceride oils...
April 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28418657/oil-in-water-emulsions-stabilized-by-saponified-epoxidized-soybean-oil-grafted-hydroxyethyl-cellulose
#8
Xujuan Huang, Qiaoguang Li, He Liu, Shibin Shang, Minggui Shen, Jie Song
An oil-in-water emulsion stabilized by saponified epoxidized soybean oil-grafted hydroxyethyl cellulose (H-ESO-HEC) was investigated. By using an ultrasonic method, oil-in-water emulsions were prepared by blending 50 wt % soybean oil and 50 wt % H-ESO-HEC aqueous suspensions. The influence of H-ESO-HEC concentrations on the properties of oil-in-water emulsions was examined. The H-ESO-HEC concentrations in the aqueous phase varied from 0.02 to 0.40 wt %. When the H-ESO-HEC concentration was 0.4 wt %, the emulsion remained stable for >80 days...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28415841/unique-pattern-of-protein-bound-maillard-reaction-products-in-manuka-leptospermum-scoparium-honey
#9
Michael Hellwig, Jana Rückriemen, Daniel Sandner, Thomas Henle
As a unique feature, honey from the New Zealand manuka tree (Leptospermum scoparium) contains substantial amounts of dihydroxyacetone (DHA) and methylglyoxal (MGO). Although MGO is a reactive intermediate in the Maillard reaction, very little is known about reactions of MGO with honey proteins. We hypothesized that the abundance of MGO should result in a particular pattern of protein-bound Maillard reaction products (MRPs) in manuka honey. A protein-rich high-molecular-weight fraction was isolated from 12 manuka and 8 non-manuka honeys and hydrolyzed enzymatically...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28414437/phenolic-content-and-antioxidant-activity-during-the-development-of-brookfield%C3%A2-and-mishima-apples
#10
Mayara C Stanger, Cristiano A Steffens, Cristina Soethe, Marcelo A Moreira, Cassandro V T do Amarante
The aim of this study was to characterize the changes in the contents of total (TPC) and individual (IPC) phenolic compounds and the total antioxidant activity (TAA) in the peel and pulp, and total anthocyanins (TAN) in the peel, during the development of the fruits of Brookfield® and Mishima apple trees. 'Brookfield®' apples were harvested from the 49th to 138th days after full bloom (DAFB) and 'Mishima' apples from the 45th to 172th DAFB. In the pulp, the IPC, TPC and TAA rapidly reduced at 75 and 79 DAFB for the 'Brookfield®' and 'Mishima' apples, respectively, and then remained constant until commercial maturity...
April 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28412809/selective-estrogen-receptor-modulator-serm-like-activities-of-diarylheptanoid-a-phytoestrogen-from-curcuma-comosa-in-breast-cancer-cells-pre-osteoblast-cells-and-rat-uterine-tissues
#11
Natthakan Thongon, Nittaya Boonmuen, Kanoknetr Suksen, Patsorn Wichit, Arthit Chairoungdua, Patoomratana Tuchinda, Apichart Suksamrarn, Wipawee Winuthayanon, Pawinee Piyachaturawat
Diarylheptanoids from Curcuma comosa, of the Zingiberaceae family, exhibit diverse estrogenic activities. In this study we investigated the estrogenic activity of a major hydroxyl diarylheptanoid, 7-(3,4 -dihydroxyphenyl)-5-hydroxy-1-phenyl-(1E)-1-heptene (compound 092) isolated from C. comosa. The compound elicited different transcriptional activities of estrogen agonist at low concentrations (0.1-1 μM) and antagonist at high concentrations (10-50 μM) using luciferase reporter gene assay in HEK-293T cells...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28409937/spatial-and-temporal-localization-of-flavonoid-metabolites-in-strawberry-fruit-fragaria-%C3%A3-ananassa
#12
Anna Christina Crecelius, Dirk Hoelscher, Thomas Hoffmann, Bernd Schneider, Thilo C Fischer, Magda-Viola Hanke, Henry Flachowsky, Wilfried Schwab, Ulrich S Schubert
Flavonoids are important metabolites in strawberries (Fragaria × ananassa), since they accomplish an extensive collection of physiological functions and are valuable for human health. However, their localization within the fruit tissue has not been extensively explored. Matrix-assisted laser desorption/ionization mass spectrometric imaging (MALDI-MSI) was employed to shed light on the spatial distribution of flavonoids during fruit development. One wild-type (WT) and two transgenic lines were compared, where in the transgenics enzymes anthocyanidin reductase (ANRi) and flavonol synthase (FLSi), respectively were down-regulated using an RNAi based silencing approach...
April 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28393527/investigation-of-pesticide-penetration-and-persistence-on-harvested-and-live-basil-leaves-using-surface-enhanced-raman-scattering-mapping
#13
Tianxi Yang, Bin Zhao, Amanda J Kinchla, John M Clark, Lili He
Understanding pesticide behavior in plants is important for effectively applying pesticides and in reducing pesticide exposures from ingestion. This study aimed to investigate the penetration and persistence of pesticides applied on harvested and live basil leaves. Surface-enhanced Raman scattering (SERS) mapping was applied for in situ and real-time tracking of pesticides over time using gold nanoparticles as probes. The results showed that, after surface exposure of 30 min to 48 h, pesticides (10 mg/L) penetrated more rapidly and deeply into the live leaves than the harvested leaves...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28434221/characterization-of-mesocarp-and-kernel-lipids-from-elaeis-guineensis-jacq-elaeis-oleifera-kunth-cort%C3%A3-s-and-their-interspecific-hybrids
#14
Veronika Maria Lieb, Margarete Rosa Kerfers, Amrei Kronmüller, Patricia Esquivel, Amancio Alvarado, Víctor M Jiménez, Hans-Georg Schmarr, Reinhold Carle, Ralf M Schweiggert, Christof Björn Steingass
Morphological traits, total lipid contents, and fatty acid profiles were assessed in fruits of several accessions of Elaeis oleifera [Kunth] Cortés, Elaeis guineensis Jacq., and their interspecific hybrids. The latter featured the highest mesocarp-to-fruit ratios (77.9-78.2%). The total lipid contents of both E. guineensis mesocarp and kernel were significantly higher than for E. oleifera accessions. Main fatty acids comprised C16:0, C18:1n9, and C18:2n6 in mesocarp, and C12:0, C14:0, and C18:1n9 in kernels...
April 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28430434/edible-oleocolloids-the-final-frontier-in-food-innovation
#15
Ashok R Patel
No abstract text is available yet for this article.
April 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28430433/-2r-3s-2-r-3-r-manniflavanone-protects-proliferating-skeletal-muscle-cells-against-oxidative-stress-and-stimulates-myotube-formation
#16
Suresh Acharya, Timo D Stark, Seung Tack Oh, Songhee Jeon, Sok Cheon Pak, Mina K Kim, Toshiaki Matsutomo, Jinyoung Hur, Thomas Hofmann, Rodney A Hill, Onesmo B Balemba
We investigated the antioxidative properties of (2R,3S,2''R,3''R)-Manniflavanone (MF) using in vitro assays, and examined its effects on myogenesis and lactate-induced oxidative stress in C2C12 cells. MF was purified from Garcinia buchananii stem bark. H2O2 and ORAC assay demonstrated that MF is a powerful antioxidant. This finding was supported by DPPH radical scavenging activity of MF. MF was less cytotoxic to C2C12 cells compared to ascorbic acid and myricetin. Moreover, MF accelerated myotube formation in the differentiated C2C12 cells by up-regulating myogenic proteins such as MyoG and MHC...
April 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28429935/saponins-ginsenosides-from-the-leaves-of-panax-quinquefolius-ameliorated-acetaminophen-induced-hepatotoxicity-in-mice
#17
Xingyue Xu, Junnan Hu, Zhi Liu, Rui Zhang, Yufang He, Wei Hou, Zhiqing Wang, Ge Yang, Wei Li
Acetaminophen (APAP) overdose is the most frequent inducement of drug-induced acute liver injury (ALI). The purpose of this study was to investigate the protective effect of saponins (ginsenosides) from the leaves of Panax quinquefolius (PQS) against APAP-induced hepatotoxicity and the involved mechanism were investigated. Mice were pretreated with PQS (150 and 300 mg/kg) by oral gavage for seven days before being treated with 250 mg/kg APAP. Sever liver injury was exerted at 24 h post-APAP and hepatotoxicity was assessed...
April 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28388055/development-and-validation-of-ion-chromatography-tandem-mass-spectrometry-based-method-for-the-multiresidue-determination-of-polar-ionic-pesticides-in-food
#18
Stuart Adams, Jonathan Guest, Michael Dickinson, Richard J Fussell, Jonathan Beck, Frans Schoutsen
An extraction method using acidified methanol based on the quick polar pesticide (QuPPe) method using suppressed ion chromatography coupled to mass spectrometry was developed and validated for the direct analysis of polar pesticides, without the need for derivatization or ion pairing, in cereals and grapes. The method was robust, and results for glyphosate, aminomethyl phosphonic acid (AMPA), N-acetyl-AMPA, glufosinate, 3-methylphosphinicopropionic acid (3-MPPA), N-acetyl glufosinate, ethephon, chlorate, perchlorate, fosetyl aluminum, and phosphonic acid at three concentration levels (typically 0...
April 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28425285/directed-evolution-of-carbonyl-reductase-from-rhodosporidium-toruloides-and-its-application-in-stereoselective-synthesis-of-tert-butyl-3r-5s-6-chloro-3-5-dihydroxyhexanoate
#19
Zhi-Qiang Liu, Lin Wu, Xiao-Jian Zhang, Ya-Ping Xue, Yu-Guo Zheng
tert-Butyl (3R,5S)-6-chloro-3,5-dihydroxyhexanoate ((3R,5S)-CDHH) is a key intermediate of atorvastatin and rosuvastatin synthesis. Carbonyl reductase RtSCR9 from Rhodosporidium toruloides exhibited excellent activity toward tert-butyl (S)-6-chloro-3-hydoxy-5-oxohexanoate ((S)-CHOH). To improve the activity of RtSCR9, random mutagenesis and site-saturation mutagenesis were performed. Three positive mutants were obtained (mut-Gln95Asp, mut-Ile144Lys and mut-Phe156Gln). These mutants exhibited 1.94-, 3.03- and 1...
April 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28406019/honey-extracted-polyphenolics-reduce-experimental-hypoxia-in-human-keratinocytes-culture
#20
Amrita Chaudhary, Swarnendu Bag, Provas Banerjee, Jyotirmoy Chatterjee
Hypoxic assault affects fundamental cellular processes and generates oxidative stress on healthy cells/molecules. Honey extracted polyphenolics (HEP) as a natural antioxidant reduced hypoxic cytotoxicity in this study. Different honey samples were physicochemically characterized to identify preferred (jamun) honey [pH 3.55 ± 0.04, conductivity (μs/cm) = 6.66 ± 0.14, water content % (w/w) = 14.70 ± 0.35, total solid content % (w/w) = 85.30 ± 0.35, phenol content (mg GAE/100 g) = 403.55 ± 0.35, flavonoid content (mg QE/100 g) = 276...
April 20, 2017: Journal of Agricultural and Food Chemistry
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