journal
MENU ▼
Read by QxMD icon Read
search

Journal of Agricultural and Food Chemistry

journal
https://www.readbyqxmd.com/read/28535353/broad-specificity-immunoassay-for-simultaneous-detection-of-ochratoxins-a-b-and-c-in-millet-and-maize
#1
Yaqiong Zhang, Lanteng Wang, Xing Shen, Xiaoqun Wei, Xinan Huang, Yingju Liu, Xiulan Sun, Zhanhui Wang, Yuanming Sun, Zhenlin Xu, Sergei Alexandrovich Eremin, Hongtao Lei
Ochratoxins A, B and C (OTA, OTB and OTC) can be found in cereals and feeds, the simultaneous detection of these ochratoxins holds a great need in food safety. In this study, four antibodies raised from two ochrotoxin haptens and two coating antigens were compared, and then a sensitive and broad-specificity enzyme-linked immunosorbent assay (ELISA) was established for the simultaneous determination of three ochratoxins, where the detection limits were 0.005, 0.001 and 0.001 ng/mL for OTA, OTB and OTC, respectively, and recoveries of three ochratoxins were between 84...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535347/preparation-and-characterization-of-protein-loaded-electrospun-fiber-mat-and-its-release-kinetics
#2
Peng Wen, Yan Wen, Xiao Huang, Minhua Zong, Hong Wu
For the enhancement of protein's bioavailability, a specific delivery system was developed by coaxial electrospinning. Bovine serum albumin (BSA) was used as protein model and the core-sheath fiber mat was fabricated using sodium alginate as shell layer and the BSA-loaded chitosan nanoparticle that prepared previously as core layer. By optimizing electrospinning parameters, uniform fibers with diameters ranging from 200 nm to 600 nm were obtained, and transmission electron microscopy and confocal laser scanning microscopy revealed its core-sheath structure...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535345/natural-predominance-of-abscisic-acid-in-pongammia-pinnata-karanj-honey-contributed-to-its-strong-antimutagenicity
#3
Sudhanshu Saxena, Jyoti Tripathi, Suchandra Chatterjee, Satyendra Gautam
Various samples of raw (unprocessed) floral honey collected from different geographical locations of India were assayed for its antimutagenicity against ethyl methanesulfonate in E. coli MG1655 cells through rifampicin resistance assay. A monofloral honey ('Pongammia pinnata', local name 'Karanj') displayed maximum antimutagenicity (78.0 ± 1.7; P≤0.05). Solid phase extraction (using amberlite XAD-2 resin) followed by HPLC resulted into different peaks displaying varying antimutagenicity. Peak at retention time (Rt) 27...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535336/transport-of-the-glucosamine-derived-browning-product-fructosazine-polyhydroxyalkylpyrazine-across-the-human-intestinal-caco-2-cell-monolayer-role-of-the-hexose-transporters
#4
Abhishek Bhattacherjee, Yuliya Hrynets, Mirko Betti
The transport mechanism of fructosazine, a glucosamine self-condensation product, was investigated using a Caco-2 cell model. Fructosazine transport was assessed by measuring the bidirectional permeability coefficient across Caco-2 cells. The mechanism of transport was evaluated using phlorizin, an inhibitor of sodium-dependent glucose cotransporters (SGLT) 1 and 2, phloretin and quercetin, an inhibitors of glucose transporters (GLUT) 1 and 2, transcytosis inhibitor wortmannin, and gap junction disruptor cytochalasin D...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535050/model-studies-on-the-effect-of-aldehyde-structure-on-their-selective-trapping-by-phenolic-compounds
#5
Francisco J Hidalgo, Isabel Aguilar, Rosario Zamora
The reaction among flavor-relevant saturated aldehydes (propanal, 2-methylpropanal, butanal, 2-methylbutanal, 3-methylbutanal, pentanal, hexanal, and glyoxal) and phenolic compounds (resorcinol, 2-methylresorcinol, 2,5-dimethylresorcinol, and orcinol) was studied both to identify and characterize the formed carbonyl-phenol adducts and to understand the differences in the carbonyl-trapping abilities of phenolic compounds. The obtained results showed that carbonyl-trapping by phenolics is selective and the formation of carbonyl-phenol adducts depends on the structure of both phenol and aldehyde involved...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535048/control-of-maillard-reactions-in-foods-strategies-and-chemical-mechanisms
#6
Marianne N Lund, Colin Ray
Maillard reactions lead to changes in food color, organoleptic properties, protein functionality, and protein digestibility. Numerous different strategies for controlling Maillard reactions in foods have been attempted during the last decades. In this paper, recent advances in strategies for controlling the Maillard reaction and subsequent downstream reaction products in food systems are critically reviewed. The underlying mechanisms at play are presented, strengths and weaknesses of each strategy are discussed, and reasonable reaction mechanisms are proposed to reinforce the evaluations...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535046/inhibitory-effect-of-piceatannol-on-tnf-%C3%AE-mediated-inflammation-and-insulin-resistance-in-3t3-l1-adipocytes
#7
Yanfang Li, Puyu Yang, Qimeng Chang, Jing Wang, Jie Liu, Yuan Lv, Thomas T Y Wang, Boyan Gao, Yaqiong Zhang, Liangli Lucy Yu
Piceatannol, a bioactive component in grapes and blueberry, was examined for its potential in decreasing the inflammatory activities in adipocytes using a co-cultured adipocytes and macrophages system, and suppressing TNF-α mediated inflammation and the related insulin resistance using a 3T3-L1 adipocytes model. Piceatannol treatment significantly reduced the release of inflammatory cytokines of TNF-α and MCP-1 in the co-cultured system and inhibited TNF-α induced expression of IL-6 and MCP-1 at both mRNA and protein levels in the 3T3-L1 adipocytes...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28535043/identification-and-quantification-of-acylated-homoserine-lactones-in-shewanella-baltica-the-specific-spoilage-organism-of-pseudosciaena-crocea-by-ultra-high-performance-liquid-chromatography-coupled-to-triple-quadrupole-mass-spectrometry
#8
Yanbo Wang, Xiaoxiao Zhang, Chong Wang, Linglin Fu, Yanyao Yi, Yan Zhang
Bacteria communicate with one another using chemical signal molecules called autoinducers, and the most prevalent autoinducers used by Gram-negative bacteria are N-acylated homoserine lactones (AHLs). However, AHLs are hardly detected in Shewanella baltica, the specific spoilage organism of Pseudosciaena crocea. In this study, we applied ultra-high-performance liquid chromatography coupled to triple quadrupole tandem mass spectrometry (UHPLC-QqQ-MS/MS) to determine AHLs. This method enabled the quantification of up to 11 AHLs within 5...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28534630/an-approach-to-study-the-interactions-between-ellagitannins-and-oxygen-during-oak-wood-aging
#9
Ignacio García-Estévez, Cristina Alcalde-Eon, Ana María Martínez-Gil, Julian C Rivas-Gonzalo, M Teresa Escribano-Bailon, Ignacio Nevares, Maria Del Alamo-Sanza
During the aging of red wine in oak wood barrels, or in alternative aging systems, interactions between the compounds released from wood, the compounds of the wine and oxygen can take place. The main objective of the present work was to study oxygen-ellagitannin interactions by monitoring their levels in three model systems all containing the same amounts of French oak chips and only differing in the oxygen content: total absence, only the oxygen released from the chips and air-saturated (model systems F, OW and OS, respectively)...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28534405/tissue-distribution-excretion-and-metabolic-profile-of-dihydromyricetin-a-flavonoid-from-vine-tea-ampelopsis-grossedentata-after-oral-administration-in-rats
#10
Li Fan, Qing Tong, Weiwei Dong, Guangjie Yang, Xiaolong Hou, Wei Xiong, Chunyang Shi, Jianguo Fang, Wenqing Wang
Dihydromyricetin (DMY), a flavanonol compound found as the most abundant and bioactive constituent in vine tea (Ampelopsis grossedentata), possesses numerous biological activities. In the present study, a HPLC-MS/MS method for the determination of DMY in tissues, urine and feces was developed and applied to the tissue distribution and excretion study after oral administration in rats, and the metabolic profile of DMY was further investigated using UPLC-QTOF-MS. The results indicated that DMY could be distributed rapidly in various tissues and highly in gastrointestinal tract...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28534401/physical-and-oxidative-stability-of-flaxseed-oil-in-water-emulsions-fabricated-from-sunflower-lecithins-impact-of-blending-lecithins-with-different-phospholipid-profiles
#11
Li Liang, Fang Chen, Xing-Guo Wang, Qingzhe Jin, Eric A Decker, David Julian McClements
There is great interest in the formulation of plant-based foods enriched with nutrients that promote health, such as polyunsaturated fatty acids. This study evaluated the impact of sunflower phospholipid type on the formation and stability of flaxseed oil-in-water emulsions. Two sunflower lecithins (Sunlipon 50 and 90) with different phosphatidylcholine (PC) levels (59 and 90%, respectively) were used in varying ratios to form emulsions. Emulsion droplet size, charge, appearance, microstructure, and oxidation were measured during storage at 55 C in the dark...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28506062/lc-ms-untargeted-metabolomics-to-explain-the-signal-metabolites-inducing-browning-in-fresh-cut-lettuce
#12
Carlos J García, Rocío García-Villalba, María I Gil, Francisco A Tomas-Barberan
Enzymatic browning is one of the main causes of quality loss in lettuce as a prepared and ready-to-eat cut salad. An untargeted metabolomics approach using UPLC-ESI-QTOF-MS was performed to explain the wound response of lettuce after cutting and to identify the metabolites responsible of browning. Two cultivars of Romaine lettuce with different browning susceptibilities were studied at short time intervals after cutting. From the total 5975 entities obtained from the raw data after alignment, filtration reduced the number of features to 2959, and the statistical analysis found that only 1132 entities were significantly different...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28499340/tebuconazole-and-azoxystrobin-residue-behaviors-and-distribution-in-field-and-cooked-peanut
#13
Fan Hou, Peipei Teng, Fengmao Liu, Wenzhuo Wang
Residue behaviors of tebuconazole and azoxystrobin in field condition and the variation of their residue levels during the boiling process were evaluated. The terminal residues of peanut kernels were determined by using a modified QuEChERS method (quick, easy, cheap, effective, rugged, and safe) by means of the optimization of the novel purification procedure with multiwalled carbon nanotubes (MWCNTs) and Fe3O4-magnetic nanoparticle (Fe3O4-MNP) in the presence of an external magnetic field, and the terminal residues were all at trace level at harvest time...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28471170/resveratrol-reactivates-latent-hiv-through-increasing-histone-acetylation-and-activating-heat-shock-factor-1
#14
Xiaoyun Zeng, Xiaoyan Pan, Xinfeng Xu, Jian Lin, Fuchang Que, Yuanxin Tian, Lin Li, Shuwen Liu
The persistence of latent HIV reservoirs presents a significant challenge to viral eradication. Effective latency reversing agents (LRAs) based on "shock and kill" strategy are urgently needed. The natural phytoalexin resveratrol has been demonstrated to enhance HIV gene expression, although its mechanism remains unclear. In this study, we demonstrated that resveratrol was able to reactivate latent HIV without global T cell activation in vitro. Mode of action studies showed resveratrol-mediated reactivation from latency did not involve the activation of silent mating type information regulation 2 homologue 1 (SIRT1), which belonged to class-3 histone deacetylase (HDAC)...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28467846/sensitizing-and-eliciting-capacity-of-egg-white-proteins-in-balb-c-mice-as-affected-by-processing
#15
Alba Pablos-Tanarro, Daniel Lozano-Ojalvo, Mónica Martínez-Blanco, Rosina López-Fandiño, Elena Molina
This study assesses to what extent technological processes that lead to different degrees of denaturation of egg white proteins affect their allergenicity. We focused on heat (80 °C, 10 min) and high-pressure (400 MPa and 37 °C, 10 min) treatments and used a BALB/c mouse model of food allergy. Oral sensitization to egg white using cholera toxin as adjuvant induced the production of IgE and IgG1 isotypes and led to severe clinical signs following challenge with the allergen. Extensive protein denaturation caused by heat treatment increased its ability to induce Th1 responses and reduced both its sensitizing and eliciting capacity...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28532150/synephrine-as-a-specific-marker-for-orange-consumption
#16
Matthias Bader, Tatjana Lang, Roman Lang, Thomas Hofmann
To validate the suitability of synephrine, known as a highly abundant alkaloid in oranges, as a dietary biomarker for orange consumption, a highly sensitive and robust stable isotope dilution analysis (SIDA) as well as an ECHO method, using the analyte itself as a pseudo-internal standard injected into the analysis run providing an "echo peak" of the analyte, was developed to quantitate synephrine by LC-MS/MS in citrus juices and human urine before and after ingestion of orange juice. A citrus juice screening revealed high synephrine concentrations of 150 to 420 nmol/mL in orange (n=11) and tangerine juices (n=2), while 20 to 100 times lower levels were found in juice from grapefruit (n=14), lemon (n=5) and lime (n=4), respectively...
May 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28532149/proteomic-analysis-of-pigeonpea-cajanus-cajan-seeds-reveals-the-accumulation-of-numerous-stress-related-proteins
#17
Hari B Krishnan, Savithry S Natarajan, Nathan W Oehrle, Wesley M Garrett, Omar Darwish
Pigeonpea is one of the major sources of dietary protein for more than a billion people living in South Asia. This hardy legume is often grown in low-input and risk-prone marginal environments. Considerable research effort has been devoted by a global research consortium to develop genomic resources for the improvement of this legume crop. These efforts have resulted in the elucidation of the complete genome sequence of pigeonpea. Despite these developments, little is known about seed proteome of this important crop...
May 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28532148/gluten-free-sources-of-fermentable-extract-effect-of-temperature-and-germination-time-on-quality-attributes-of-teff-eragrostis-tef-zucc-trotter-malt-and-wort
#18
Lidia Di Ghionno, Eung Gwan Lee, Ombretta Marconi, Christopher J Rice, Valeria Sileoni, Giuseppe Perretti
This study was conducted to evaluate the behavior of a white teff variety called Witkop during malting by using different parameters (germination temperature and duration) and to identify the best malting program. Samples were evaluated for standard quality malt and wort attributes, pasting characteristics, β-glucan and arabinoxylan content and sugar profile. It was concluded that malting teff at 24°C for 6 days produced acceptable malt in terms of quality attributes and sugar profile for brewing. The main attributes were: 80...
May 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28532146/calcium-iron-and-zinc-bioaccessibilities-of-australian-sweet-lupin-lupinus-angustifolius-l-cultivars
#19
Weeraya Karnpanit, Ranil Coorey, Jon Clements, Wenika Benjapong, Vijay Jayasena
The study aimed to determine the effect of cultivar and dehulling on calcium, iron and zinc bioaccessibilities of Australian sweet lupin (ASL). Ten ASL cultivars grown in 2011, 2012 and 2013 in Western Australia were used for the study. The bioaccessibilities of calcium, iron and zinc in whole seed and dehulled lupin samples were determined using a dialysability method. Cultivar had significant effects on calcium, iron and zinc contents and their bioaccessibilities. The average bioaccessibilities of 6% for calcium, 17% for iron and 9 % for zinc were found for whole seeds...
May 22, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28530827/overexpression-of-the-squalene-epoxidase-gene-alone-and-in-combination-with-the-3-hydroxy-3-methylglutaryl-coenzyme-a-gene-increases-ganoderic-acid-production-in-ganoderma-lingzhi
#20
De-Huai Zhang, Lu-Xi Jiang, Na Li, Xuya Yu, Peng Zhao, Tao Li, Jun-Wei Xu
The squalene epoxidase (SE) gene from the biosynthetic pathway of ganoderic acid (GA) was cloned and overexpressed in Ganoderma lingzhi. The strain that overexpressed the SE produced approximately 2 times more GA moleculars than the wild-type (WT) strain. Moreover, SE overexpression up-regulated lanosterol synthase gene expression in the biosynthetic pathway. These results indicated that SE stimulates GA accumulation. Then, the SE and 3-hydroxy-3-methylglutaryl coenzyme A (HMGR) genes were simultaneously overexpressed in G...
May 22, 2017: Journal of Agricultural and Food Chemistry
journal
journal
23759
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"