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Journal of the Science of Food and Agriculture

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https://www.readbyqxmd.com/read/29352475/characteristics-of-proanthocyanidins-in-leaves-of-chamaecyparis-obtusa-var-formosana-as-strong-%C3%AE-glucosidase-inhibitors
#1
Chia-Yun Hsu, Gong-Min Lin, Huan-You Lin, Shang-Tzen Chang
BACKGROUND: In recent decades there has been a growing demand for natural products with a view to using them as α-glucosidase inhibitors for reducing postprandial hyperglycemia. The hot water extract from Chamaecyparis obtusa var. formosana (Hayata) Rehder (Cupressaceae) (HWE) leaves and its soluble fractions were screened for α-glucosidase inhibition properties. The n-butanol soluble fraction of HWE was further fractionated into fourteen subfractions (B1-B14) using a Sephadex LH-20 column...
January 20, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29352470/a-laser-optical-method-for-predicting-adulteration-of-clover-honey-bee
#2
A E El-Raie, H E Hassan, A A Abd El-Rahman, R A Shaimaa
The authenticity of honey is great importance for commercial and health reasons. Adulteration of honey bee with cheaper sweetening materials has been used. The objectives of this study were: 1) To evaluate the quality of honey bee according to physicochemical characteristics, 2) To estimate the transmission property of prediction of honey using visible laser technique, and 3) Possibility of adulteration of honey bee according to high transmission intensity of laser beam through Clover honey bee. Helium-neon (He-Ne) laser in the visible light with wavelengths 632...
January 20, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29352462/effect-of-methyl-salicylate-in-combination-with-1-methylcyclopropene-on-postharvest-quality-and-decay-caused-by-botrytis-cinerea-in-tomato-fruit
#3
Dedong Min, Fujun Li, Xinhua Zhang, Pan Shu, Xixi Cui, Lulu Dong, Chuntao Ren, Demei Meng, Jian Li
BACKGROUND: Postharvest diseases result in major losses in fruits. Tomato is susceptible to postharvest rot caused by B. cinerea and is regarded as a good model system to study postharvest disease and quality deterioration in fruit. To develop a safe and effective technique to alleviate disease and maintain fruit quality, the effects of methyl salicylate (MeSA) or 1-methylcyclopropene (1-MCP) either separately or combined on quality and gray mold caused by B. cinerea in tomato fruit were investigated...
January 20, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29344958/protective-effects-of-new-antioxidant-compositions-of-4-methylcoumarins-and-related-compounds-with-dl-%C3%AE-tocopherol-and-l-ascorbic-acid
#4
Vessela D Kancheva, Adriana K Slavova-Kazakova, Silvia E Angelova, Prashant Kumar, Shashwat Malhotra, Brajendra K Singh, Luciano Saso, Ashok K Prasad, Virinder S Parmar
BACKGROUND: Coumarin derivatives possess a wide range of biological activities. By functionalization of the parent coumarin skeleton that has neither antioxidant nor biological activity a series of new bio-antioxidants has been designed. RESULTS: New antioxidant compositions (equimolar binary and ternary mixtures) of eight 4-methylcoumarins and three related compounds have been tested and different effects between the individual components have been observed: positive effect (synergism), summary effect (additivism) and negative effect (antagonism)...
January 18, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29344957/rapid-differentiation-of-chinese-hops-varieties-humulus-lupulus-using-volatile-fingerprinting-by-hs-spme-gc-ms-combined-with-multivariate-statistical-analysis
#5
Zechang Liu, Liping Wang, Yumei Liu
BACKGROUND: Hops imparts flavor to beer, and its volatile components characterize the various hops varieties and qualities. The volatile components of hops are used for distinguishing between its various varieties and qualities. Fingerprinting, especially flavor fingerprinting, is often used to identify "flavor products", since inconsistencies in the description of flavor may lead to incorrect definition of beer quality. Compared to flavor fingerprinting, volatile fingerprinting is simpler and easier...
January 18, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29344949/flavour-active-compounds-in-thermally-treated-yeast-extracts
#6
Aygul Alim, Huanlu Song, Ye Liu, Tingting Zou, Yu Zhang, Songpei Zhang
BACKGROUND: Aroma-active compounds and non-volatile substances determine the characteristic aroma and taste of yeast extracts (YE). With thermal reaction, the characteristic aroma and taste of YE are studied rarely, and the relationship between aroma-active compounds and non-volatile compounds is not so clear yet. RESULTS: The non-volatile compounds identified by HPLC and LC-MS/MS were reduced following by rise in temperature except some amino acids. Peptides undergo degradation...
January 18, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29344948/glycation-of-ovalbumin-after-high-intensity-ultrasound-pretreatment-effects-on-conformation-igg-ige-binding-ability-and-antioxidant-activity
#7
Wenhua Yang, Zongcai Tu, Hui Wang, Lu Zhang, Qidong Song
BACKGROUND: Ovalbumin (OVA), a protein with excellent nutritional and processing properties, is the major allergen of hen egg white. Previous study showed that high-intensity ultrasound treatment increased the IgG and IgE binding abilities by unfolding the conformational structure of OVA. It may allow modifying the IgG and IgE binding of OVA by combining high-intensity ultrasound with other methods, such as glycation, a promising method for the improvement of protein properties. RESULTS: Glycation with mannose (M) after ultrasound pretreatment at 0-600 W significantly reduced the IgG and IgE binding abilities and dramatically enhanced the antioxidant activity of OVA-M conjugates, with the lowest values of IgG and IgE binding and highest values of antioxidant capacity observed at 600W...
January 18, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29330852/characteristics-and-intestinal-immunomodulating-activities-of-water-soluble-pectic-polysaccharides-from-chenpi-with-different-storage-periods
#8
Changcheng Tian, Xu Hui, Jing Li, Zhuo Han
BACKGROUND: Traditional view considers that the long-term stored Chenpi (dried citrus peel) has better health efficacies as compared with the fresh Chenpi, but the detailed mechanism remains obscure. RESULTS: The three water-soluble pectic polysaccharides (CPP1, CPP5 and CPP10) were obtained from one-year, five-year and ten-year Chenpi, respectively, and their physicochemical characteristics and intestinal immunomodulating activities were investigated and compared...
January 13, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29327407/bioavailability-and-metabolism-of-rosemary-infusion-polyphenols-using-caco-2-and-hepg2-cell-model-systems
#9
Mariem Achour, Saad Saguem, Beatriz Sarriá, Laura Bravo, Raquel Mateos
BACKGROUND: Rosmarinus officinalis is an aromatic plant used in folk medicine due to the therapeutic properties associated to its phenolic composition, rich in rosmarinic acid (RA) and caffeic acid (CA). To better understand the bioactivity of these compounds, their absorption and metabolism were assessed in human Caco-2 and HepG2 cells, as small intestine and liver models, respectively, using RA and CA standards, as well as a rosemary infusion and ferulic acid (FA). RESULTS: Test compounds were partially up-taken and metabolized by Caco-2 and HepG2 cells, although higher metabolization rate was observed after hepatic incubation than intestinal...
January 12, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29327344/quality-of-fresh-cut-products-as-affected-by-harvest-and-postharvest-operations
#10
REVIEW
Francisca A Ansah, Maria L Amodio, Giancarlo Colelli
There is a rising demand for fresh-cut convenience products with high quality and nutritional standards that need to be met by the fresh-cut industry. It is well known that harvest and postharvest handling of fresh produce has a paramount impact on its quality and storage, but most of the existing literature focused on these impacts only related to fresh produce as destined to final consumers. In fact, current harvest methods and postharvest technologies have improved fruit and vegetable handling and distribution processes by slowing down physiological processes and senescence...
January 12, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315681/statistical-modeling-for-estimating-glucosinolate-content-in-chinese-cabbage-by-growth-conditions
#11
Do-Gyun Kim, Joon-Yong Shim, Myung-Jun Ko, Sun-Ok Chung, Milon Chowdhury, Wang-Hee Lee
BACKGROUND: Glucosinolate in Chinese cabbage (Brassica campestris L. ssp. pekinensis (Lour.) Rupr) has potential benefits for human health, and its content is affected by growth conditions. In this study, we used a statistical model to identify the relationship between glucosinolate content and growth conditions, and to predict glucosinolate content in Chinese cabbage. RESULT: Multiple-regression analysis was employed to develop the model's growth condition parameters of growing period, temperature, humidity, and glucosinolate content measured in Chinese cabbage grown in a plant factory...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315633/preferential-adsorption-of-flavonoids-from-peanut-shell-by-amino-modified-fe3-o4-nanoparticles-mnp-nh2
#12
Xuexiao Cao, Meng Wang, Lili Sun, Xiaoliang Ren, Gaosheng Pei
BACKGROUND: The highly selective capture of individual components of complex systems such as Chinese medicine extracts is a great challenge. With the rapid development of nanoscience, magnetic materials have attracted increased attention as suitable candidates for use in drug transport vehicles. RESULTS: In this work, amino-modified Fe3 O4 nanoparticles (MNP-NH2 ) have been synthesized and successfully used to selectively isolate Luteolin, a type of flavonoid, from peanut shell, coupled with high-performance liquid chromatography (HPLC)...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315629/soil-organic-matter-doubles-the-cation-exchange-capacity-of-tropical-soil-under-no-till-farming-in-brazil
#13
Fabricio T Ramos, Eliana F G de Carvalho Dores, Oscarlina L Dos Santos Weber, Daniel C Beber, José H Campelo, João C de Souza Maia
BACKGROUND: Conservation agricultural practices increase total organic carbon storage in soil (TOCS ), a factor that is correlated with the physical and chemical qualities of highly weathered soils. In this study, we investigated the effects of TOCS on the physicochemical attributes of a Latosol after 10 years of no-till management in Mato Grosso State, Brazil. RESULTS: TCOS was highly correlated (r = 0.92) with cation exchange capacity (CEC, pH = 7) and soil density...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315610/magnetic-dispersive-solid-phase-extraction-based-on-graphene-oxide-fe3-o4-polythionine-nanocomposite-followed-by-atomic-absorption-spectrometry-for-zinc-monitoring-in-water-flour-celery-and-egg
#14
Azar Babaei, Mohsen Zeeb, Ali Es-Haghi
BACKGROUND: Magnetic graphene oxide nanocomposite has been proposed as promising and sustainable sorbent for the extraction and separation of target analytes from food matrices. Sample preparation based on nanocomposite presents several advantages such as desired efficiency, reasonable selectivity and high surface area-to-volume ratio. RESULTS: A new graphene oxide/Fe3 O4 @polythionine (GO/Fe3 O4 @PTh) nanocomposite sorbent was introduced for magnetic dispersive solid-phase extraction (MDSPE) and flame atomic absorption spectrometric (FAAS) detection of zinc (II) in water, flour, celery and egg...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315602/comparison-of-two-docking-methods-for-peptide-protein-interactions
#15
Qiuying Yu, Fangyu Wang, Xiaofei Hu, Guangxu Xing, Ruiguang Deng, Junqing Guo, Anchun Cheng, Jing Wang, Junfang Hao, Dong Zhao, Man Teng, Gaiping Zhang
BACKGROUND: Based on the importance of peptides in regulatory interactions, peptide-protein docking has attracted many researchers' attention. Currently, a variety of methods specialized for molecular modeling of peptide-protein docking such as local search and global search are implemented. RESULTS: In this work, the interactions of eleven peptides and CSFV E2 protein were evaluated by GalaxyPepDock and FlexX/ SYBYL program, respectively. Then, the assessment scores of all the peptides were conducted a correlation analysis with their KD values...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315599/influence-of-the-drying-method-on-the-bioactive-compounds-and-pharmacological-activities-of-rhubarb
#16
Jiachen Sun, Yueting Wu, Shengjie Dong, Xia Li, Wenyuan Gao
BACKGROUND: Raw rhubarb samples that have been subjected to different drying procedures will have different therapeutic effects possibly due to processing-induced variations in the chemical composition. In the present work, the fresh materials were processed by smoking, sun-drying, shade-drying and oven-drying at low, moderate and high temperatures. To facilitate the selection of a suitable drying method for rhubarb, the quality of rhubarb processed under various drying conditions was evaluated based on the simultaneous determination of multiple bioactive constituents in combination with bioactivity assays...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315597/american-cranberries-and-health-benefits-an-evolving-story-of-25-years
#17
REVIEW
Shaomin Zhao, Haiyan Liu, Liwei Gu
Cranberries contain various type of bioactive components. Scientists have been studying cranberries' beneficial effects on urinary tract health since the 20th century. Entering the 21st century, the protection of cranberry phytochemicals against cancer and vascular diseases has drawn more attention from researchers. Anthocyanins, procyanidins, and flavonols in cranberries were all documented to have potential effects on cancer prevention. The cardiometabolic effects of cranberries have been investigated in several clinical trials...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315596/relationships-between-tyrosine-phenylalanine-chlorogenic-acid-and-ascorbic-acid-concentrations-and-blackspot-biochemical-potential-and-blackspot-susceptibility-in-stored-russet-potatoes
#18
Aymeric Goyer, Julien Pellé
BACKGROUND: Blackspot in potato is an internal tissue discoloration that occurs during handling and transport of potato tubers. Blackspot is cosmetically undesirable and represents a huge economic cost for the potato industry. The aim of this study was to test whether concentrations of certain metabolites in the potato tuber cortex could predict blackspot susceptibility. RESULTS: Seven russet potato varieties were stored for eight months at 8.80 C. Stored tubers were subjected to mechanical impact and evaluated for blackspot susceptibility...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315594/the-influence-of-acid-whey-on-the-antioxidant-peptides-generated-to-reduce-oxidation-and-improve-colour-stability-in-uncured-roasted-beef
#19
Karolina M Wójciak, Paulina Kęska, Anna Okoń, Elżbieta Solska, Justyna Libera, Zbigniew J Dolatowski
BACKGROUND: The effect of marinating beef in acid whey on the generated antioxidant peptides and their influence on lipid oxidation, colour stability, sensory analysis and protein degradation products in uncured roasted beef stored six weeks in vacuum conditions (T = 4°C) were determined. Measurements of the pH value, water activity, oxidation-reduction potential, colour, TBARS, the cutting force, texture and amino acid profile, the total content of peptides, antioxidant activity of isolated peptides were conducted immediately after production and during 42 days of storage...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29315593/unraveling-the-metabolic-response-of-brassica-oleracea-exposed-to-xanthomonas-campestris-pv-campestris
#20
María Tortosa, María E Cartea, Víctor M Rodríguez, Pablo Velasco
BACKGROUND: Brassica crops together with cereals represent the basis of world supplies. Due to their importance, the production losses caused by Xanthomonas campestris pv. campestris (Xcc) infection represent a high economic impact. Understanding molecular and biochemical mechanisms of plants is essential to develop resistant crops with durable protection against diseases. In this regard, metabolomics has emerged as a valuable technology to provide an overview of the biological status of a plant exposed to a disease...
January 9, 2018: Journal of the Science of Food and Agriculture
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