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Journal of the Science of Food and Agriculture

Ana Caroliny Vieira da Costa, Deborah Dos Santos Garruti, Marta Suely Madruga
BACKGROUND: The quality and power of each odorous volatile present in the headspace of unifloral honey velame branco (Croton heliotropiifolius Kunth) prepared by stingless uruçu (M. scutellaris Latrelle) were evaluated using the GC-olfactometry Osme technique. Five trained panelists evaluated the sensory chromatographic effluent in three replications, and the results were integrated by SCDTI software. RESULTS: Of the 42 compounds identified in the chromatogram, 17 odorous stimuli were detected by the sensory panel...
February 14, 2019: Journal of the Science of Food and Agriculture
Lembe Samukelo Magwaza, Maria Del Carmen Alamar, Samson Zeray Tesfay, Asanda Mditshwa, Umezuruike Linus Opara, Leon Alexander Terry
BACKGROUND: Nules Clementine' mandarin was used to investigate the potential involvement of endogenous plant hormones in mediating the citrus fruit susceptibility to rind breakdown disorder (RBD). The effect of light exposure (viz. canopy position and bagging treatments) on the endogenous concentration of ABA, 7'hydroxy-abscisic acid (7-OH-ABA), ABA-glucose ester (ABA-GE) and dihydrophaseic acid (DPA), and t-zeatin was tested using four preharvest treatments: outside, outside bagged, inside and inside bagged...
February 14, 2019: Journal of the Science of Food and Agriculture
Jeong Eun Kwon, Jaewon Lim, Ina Bang, Inhye Kim, Donghyuk Kim, Se Chan Kang
BACKGROUND: Equol, major isoflavone metabolite, -producing bacteria have been isolated and characterized, however fermentation has been performed with soybean-based products as substrates. Pueraria lobata has been reported as a plant with higher content of isoflavones. RESULTS: The genome of new equol-producing bacteria, Lactobacillus paracasei JS1, was analyzed. Also, the effect of P. lobata extract fermented with L. paracasei JS1 (FPE) on the skin and intestinal immune response was examined...
February 14, 2019: Journal of the Science of Food and Agriculture
Zhengtao Zhao, Xiong Xiong, Hui Zhou, Qian Xiao
BACKGROUND: Pullulan is a polysaccharide polymer commonly used to produce edible films. However, pure pullulan film is usually brittle and very hydrophilic, which limit its use in both food and pharmaceutical fields. The objective of this research is to improve the structural and mechanical properties of pullulan film by incorporating globular protein lactoferrin (LF). RESULTS: The incorporation of lactoferrin increased the surface hydrophobicity and decreased the water vapor permeability (WVP) of pullulan film...
February 14, 2019: Journal of the Science of Food and Agriculture
Kawita Chumphoochai, Pawanrat Chalorak, Worawit Suphamungmee, Prasert Sobhon, Krai Meemon
BACKGROUND: Saponins have been showed to possess many pharmacological properties including altered fat metabolism. The black sea cucumber, Holothuria leucospilota, is a marine animal that contains a specialized organ called cuvierian tubules that produce and secrete the bioactive saponins into the tubules and body wall. Therefore, the aims of this study are to investigate the anti-obesity effect of saponins extracted from body wall and cuvierian tubules of H. leucospilota. RESULTS: The butanol extracts of H...
February 14, 2019: Journal of the Science of Food and Agriculture
Mohammed Gagaoua, Brigitte Picard, Valérie Monteils
BACKGROUND: This study implemented a holistic approach based on the farm-to-fork data at the 4 levels of the continuum (farm - slaughterhouse - muscle - meat) to study the inter-individual cluster variability of beef tenderness. For that, 171 young bulls were selected on a large database of 480 animals according to the industrial expectations based on animal and carcass characteristics. The targeted factors were age at slaughter [14; 20 months], carcass weight [370; 470 kg], EUROP conformation [7; 15] and fatness [2...
February 14, 2019: Journal of the Science of Food and Agriculture
Yongzhu Wang, Xiefeng Ye, Kang Yang, Zhiqi Shi, Ning Wang, Lifei Yang, Jian Chen
BACKGROUND: Selenium (Se)-induced phytotoxicity has been linked to oxidative injury triggered by reactive oxygen species (ROS) accumulation due to the disturbance of anti-oxidative system. However, how Se stress induces hydrogen peroxide (H2 O2 ) production in plants is a long-standing question. Here we identified the role of polyamine oxidase (PAO) in H2 O2 production in the root of Brassica rapa upon Se stress. RESULTS: Se induced growth inhibition, H2 O2 accumulation, and oxidative injury in root...
February 13, 2019: Journal of the Science of Food and Agriculture
Paula Lorenzo, Pablo Souza-Alonso, Alejandra Guisande-Collazo, Helena Freitas
BACKGROUND: Acacia dealbata Link is an invasive plant worldwide. Finding potential uses for its waste that contribute to control its spread and revert in benefits for agriculture has recently become a new research topic. This study aimed at evaluating the potential biostimulant effect of the bark extract derived from the management of A. dealbata (0, 450 or 900 ppm) on onion plants under stressful conditions, including soils treated with saline solutions (0, 60 or 120 mM NaCl) and reduced irrigation (100, 50 or 25 %)...
February 13, 2019: Journal of the Science of Food and Agriculture
Maryam Abbaspour, Mir Ali Farajzadeh, Saeed Mohammad Sorouraddin, Ali Mohebbi
BACKGROUND: A method has been developed based on a three-phase system followed by dispersive liquid-liquid microextraction for the extraction of seven pesticides from soya milk prior to their analysis by gas chromatography-flame ionization detection. The base of this method is different extraction capability of the components of soya milk by each involved phases. In this procedure, a homogeneous solution consists of soya milk and a water-miscible solvent (acetonitrile) is separated two phases in the presence of Na2 SO4 and the analytes are extracted into the produced acetonitrile droplets...
February 13, 2019: Journal of the Science of Food and Agriculture
Shutian Wu, Yuewen Zheng, Xianbin Li, Yongxiang Han, Minghua Qu, Zhanglin Ni, Fubin Tang, Yihua Liu
BACKGROUND: Toxic heavy metals (THMs) caused severe environmental hazards and threaten human health through various food consumptions. However, THMs are rarely known about chestnut. In this study, the risk assessment and prediction of THMs (Pb, As, Cr, Cd and Hg) in chestnuts and growth soils from China were investigated. RESULTS: The main detected THMs in chestnuts and growth soils were As and Cd. The total pollution levels of five THMs (Nemerow pollution indexes, NPIs) were 0...
February 13, 2019: Journal of the Science of Food and Agriculture
Fengchuan Yu, Yajun Bai, Tai-Ping Fan, Xiaohui Zheng, Yujie Cai
BACKGROUND: Cheese ripening involves a complex series of metabolic reactions and numerous concomitant secondary transformations. Alcohol dehydrogenase converts aldehydes into their corresponding alcohols, which enrich cheese aroma. RESULTS: In this study, we identified five alcohol dehydrogenase (ADH) genes in Proteus mirabilis JN458, and these genes were overexpressed and characterized in Escherichia coli BL21 (DE3). The optimum pH was 7.0 for the purified recombinant ADH-1, ADH-2, and ADH-3 and 8...
February 13, 2019: Journal of the Science of Food and Agriculture
Kai Zhang, Wenhang Wang, Xiao Wang, Shan Cheng, Jingyang Zhou, Zinan Wu, Yu Li
BACKGROUND: Edible packaging and coating with natural antimicrobials such as essential oils is an emerging technology for the control of pathogen growth in meat products. The study aimed to use ethyl cellulose (EC) of three viscosities to structure cinnamon essential oil (CEO), and then investigated the physiochemical properties of the resulting oleogel and its emulsion and the corresponding antibacterial capacity in models and actual environments (sausages). RESULTS: The network structure of CEO-EC oleogel was more compact with EC viscosity increased, thereby improving the binding capacity and stability of the oil...
February 13, 2019: Journal of the Science of Food and Agriculture
Nazri Nayan, Gijs van Erven, Mirjam A Kabel, Anton S M Sonnenberg, Wouter H Hendriks, John W Cone
BACKGROUND: White rot fungi have been used to improve the nutritive value of lignocellulose for ruminants. In feed analysis, the Van Soest method is widely used to determine the cell wall contents. To assess the reliability of this method (Method A) for determination of cell wall contents in fungal-treated wheat straw, we compared with a combined monosaccharide analysis and pyrolysis coupled to gas chromatography with mass spectrometry (Py-GC/MS) (Method B). Ruminal digestibility, measured as in vitro gas production (IVGP), was subsequently used to examine which method explains best the effect of fungal pretreatment on the digestibility of wheat straw...
February 8, 2019: Journal of the Science of Food and Agriculture
Janice N Averilla, Jisun Oh, Zhexue Wu, Kwang Hyun Ryu, Chan Ho Jang, Hyo Jung Kim, Jae-Sik Kim, Jong-Sang Kim
BACKGROUND: Resveratrol, an extensively recognized phytochemical that belongs to the stilbene family, is mainly abundant in grape peel and dematerializes as a by-product during grape juice processing. RESULTS: In this study, we established that pre-heating grape peel at above 75°C significantly improved the extractability of resveratrol and its glucoside piceid. In particular, thermal heating of grape peel at 95°C for 10 min, followed by treatment with a mixture of exo-1,3-β-glucanase and pectinases at 50°C for 60 min, dramatically increased the conversion of piceid into resveratrol and the overall extractability of this phytochemical by 50%...
February 8, 2019: Journal of the Science of Food and Agriculture
Katerina Alba, Grant M Campbell, Vassilis Kontogiorgos
The structure and function of by-products of berry-processing industries are reviewed, with particular attention to dietary fibre (DF) and its effects in food products. The complex chemical composition and physicochemical characteristics of DF have been investigated and strategies for extraction of specific fractions that provide tailored technological and physiological functionality have been reviewed. The aim of this review is to describe in detail the structural composition and isolation methods of dietary fibre derived from berry by-products, and to explore their potential functionality in foods...
February 8, 2019: Journal of the Science of Food and Agriculture
Caroline Mathon, John M Chater, Andrew Green, Donald J Merhaut, Peggy A Mauk, John E Preece, Cynthia K Larive
BACKGROUND: Pomegranate (Punica granatum L.) - a delicious fruit once used in ayurvedic medicine, now is largely known for the antioxidant properties of the juice, which has also been considered to have health benefits against diseases such as cancer and cardiovascular diseases. These beneficial effects are associated with the fruit's high content of polyphenolic compounds. High demand and lower production levels drive pomegranate prices up, which leads to the possibility of pomegranate products being adulterated, diluted or substituted...
February 7, 2019: Journal of the Science of Food and Agriculture
Simona Mattioli, Alessandro Dal Bosco, Cesare Castellini, Beatrice Falcinelli, Valeria Sileoni, Ombretta Marconi, Alice Cartoni Mancinelli, Elisa Cotozzolo, Paolo Benincasa
BACKGROUND: Fresh sprouts are healthy foods, low in fats and high in phytochemicals, but have a low shelf-life, hence the need of processing methods that preserve their nutritional value. This work was aimed at evaluating the effect of heat-drying (HD) and freeze-drying (FD) on phytochemicals and fatty acids profile of alfalfa and flax sprouts, as compared to fresh material (F). RESULTS: Both FD and HD reduced the phytochemical contents compared to F. FD better preserved phytoestrogens, phytosterols and total tocols compared to HD...
February 6, 2019: Journal of the Science of Food and Agriculture
Lin Wang, Yan Zhang, Gang Fan, Jing-Nan Ren, Lu-Lu Zhang, Si-Yi Pan
BACKGROUND: The intestinal microbiota has a wide variety of functions to the host. The positive effect of plant extract on intestinal microbiota in animals has been reported. While the effect of orange essential oil and its components limonene, linalool and citral on intestinal microflora in mince has seldom been reported. The effects of intragastric administration of orange essential oil and limonene, linalool and citral on intestinal microflora and biochemical indexes in mice were studied...
February 6, 2019: Journal of the Science of Food and Agriculture
Silvia E Langer, María Marina, José L Burgos, Gustavo A Martínez, Pedro M Civello, Natalia M Villarreal
BACKGROUND: Fruit dips in calcium ions solutions have been shown as an effective treatment to extend strawberries (Fragaria x ananassa, Duch) quality during storage. In the present work, strawberry fruit were treated with 10 g L-1 calcium chloride solution and treatment effects on cell wall enzymes activities and the expression of encoding genes, as well as enzymes involved in fruit defense responses were investigated. RESULTS: Calcium treatment enhanced pectin methylesterase activity while inhibited those corresponding to pectin hydrolases as polygalacturonase and β-galactosidase...
February 5, 2019: Journal of the Science of Food and Agriculture
Mekhala D K Vithana, Zora Singh, Stuart K Johnson
There is a demand for feasible methodologies that can increase/ maintain the levels of health-promoting phytochemicals in horticultural produce, due to strong evidence that these compounds can reduce risk of chronic diseases. Mango (Mangifera indica L.), ranks fifth among the most cultivated fruit crops in the world, is naturally rich in phytochemicals such as lupeol, mangiferin and phenolic acids (eg. gallic acid, chlorogenic acid and vanillic acid). Yet, there is still much scope for up-regulating the levels of these compounds in mango fruit through manipulation of different pre- and postharvest practices that affect their biosynthesis and degradation...
February 5, 2019: Journal of the Science of Food and Agriculture
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