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Journal of the Science of Food and Agriculture

Zhanmei Jiang, Kun Yao, Xiangying Yuan, Zhishen Mu, Zengli Gao, Juncai Hou, Lianzhou Jiang
BACKGROUND: The aim of this study was to investigate the effects of ultrasound applied at various powers (0, 200, 400, 600 or 800 W) and for different times (20 or 40 min) on the physicochemical, functional properties and antioxidant activities of whey protein isolate (WPI) dispersions in the presence of 1.20 mmol L(-1) calcium lactate. RESULTS: Surface hydrophobicity and free sulfhydryl group of the WPI dispersions containing 1.2 mmol L(-1) calcium lactate were significantly enhanced after sonication...
August 12, 2017: Journal of the Science of Food and Agriculture
Joanna Politowicz, Krzysztof Lech, Leontina Lipan, Adam Figiel, Ángel A Carbonell-Barrachina
BACKGROUND: One of the best preservation method for long-term storage is drying. In this work, the influence of different drying methods on aroma and sensory profile of shiitake mushroom was evaluated. The drying methods tested were: convective drying (CD), freeze-drying (FD), vacuum-microwave drying (VMD), and a combination of convective pre-drying and vacuum-microwave finish-drying (CPD-VMFD). RESULTS: The volatile composition of fresh and dried shiitake mushrooms was analyzed by SPME, GC-MS and GC-FID, and showed the presence of 71 volatile compounds, most of them present in all dried samples but with quantitative variation...
August 12, 2017: Journal of the Science of Food and Agriculture
Xin Jian Lei, Yong Min Kim, Jae Hong Park, Dong Heon Baek, Charles Martin Nyachoti, In Ho Kim
BACKGROUND: The use of antibiotics as growth promoters in feed has been fully or partially banned in several countries. The objective of this study was to evaluate effects of levan-type fructan on growth performance, nutrient digestibility, fecal shedding of lactic acid bacteria and coliform bacteria, diarrhea scores, and fecal gas emission in weaning pigs. A total of 144 weaning pigs [(Yorkshire × Landrace) × Duroc] were randomly allocated to 4 diets: corn-soybean meal-based diets supplemented with 0, 0...
August 12, 2017: Journal of the Science of Food and Agriculture
Yanyan Zhang, Jing Li, Suyun Li, Haile Ma, Hua Zhang
BACKGROUND: Ultrasound pretreatment could improve the angiotensin-I converting enzyme (ACE) inhibitory activity of hydrolysates of wheat gluten (WG). The working mode of ultrasound has an important effect on the enzymatic hydrolysis of protein. RESULTS: The results showed that the optimum working mode of ultrasound was alternate dual-frequency mode (20/35 kHz), substrate concentration was 30 g L(-1) , initial temperature of the suspension was 30 °C, ultrasound pretreatment time was 10 min and power density was 150 W L(-1) ...
August 12, 2017: Journal of the Science of Food and Agriculture
Hedwig Natabirwa, John H Muyonga, Dorothy Nakimbugwe, Mercy Lungaho
BACKGROUND: Extrusion processing offers the possibility of processing common beans industrially into highly nutritious and functional products. However, there is limited information on properties of extrudates from different beans varieties and their association with raw material characteristics and extrusion conditions. In this study, physicochemical properties of raw and extruded Bishaz, K131, NABE19, Roba1 and RWR2245 common beans were determined. The relationships between bean characteristics and extrusion conditions on the extrudate properties were analyzed...
August 11, 2017: Journal of the Science of Food and Agriculture
Jalal Dehghannya, Lida Abedpour
BACKGROUND: Fried potato is one of the most consumed products in the world. Due to consumers' growing tendency to use healthy and low-fat foods, reducing oil content in fried foods has become a necessity. Several studies have shown that higher initial water content results in increased oil uptake during frying. Therefore, pretreatments that reduce water content of the product could lower oil uptake in the final product. The aim of this study was to evaluate the influence of a three stage hybrid ultrasound-osmotic-frying process on production of low-fat fried potato strips...
August 11, 2017: Journal of the Science of Food and Agriculture
Fan Xie, Shaoyun Wang, Li Zhang, Jinhong Wu, Zhengwu Wang
BACKGROUND: We synthesized a novel sericin peptide (SP-GI) with α-D-glucosidase inhibitory activity, which has a sequence of SEDSSEVDIDLGN. The kinetics of its peptide-induced inhibition on α-D-glucosidase activity and its interaction mechanism merging with molecular docking were both investigated. RESULTS: SP-GI exhibited significant inhibitory activity with an IC50 of 2.9 ± 0.1 μM and this inhibition was reversible and non-competitive with a Ki value of 1...
August 11, 2017: Journal of the Science of Food and Agriculture
Selin Şahin, Mehmet Bilgin
Researches into finding new uses for by-products of table olive and olive oil industry are of great value not only to the economy, but also to the environment where olives are grown and to the human health. Since leaves represent around 10% of the total weight of olives arriving to the mill, it is worth obtaining high added-value compounds from those materials for the preparation of dietary supplements, nutraceuticals, functional food ingredients or cosmeceuticals. In this review article, olive tree (Olea europaea L...
August 11, 2017: Journal of the Science of Food and Agriculture
William Pickup, Phil Bremer, Mei Peng
BACKGROUND: The extensive time and cost associated with conventional sensory profiling methods has spurred sensory researchers to develop rapid method alternatives, such as Napping® with Ultra-Flash Profiling (UFP). Napping®-UFP generates sensory maps by requiring untrained panellists to separate samples based on perceived sensory similarities. Evaluations of this method have been restrained to manufactured / formulated food models, and predominantly structured on comparisons against the conventional descriptive method...
August 8, 2017: Journal of the Science of Food and Agriculture
Cong Sunli, Sun Jun, Mao Hanping, Wu Xiaohong, Wang Pei, Zhang Xiaodong
BACKGROUND: Mold contamination of grains not only contributes to unedible food, resulting in economic losses, but also leads to mold in humans and livestock, even can be carcinogenic to them. Rice as one of the main grain varieties, if improper storage, is easily to mildew. In order to detect the total number of mold colonies in rice more accurately, a method based on hyperspectral imaging technology was investigated. RESULTS: In this paper, non-destructive detection for the total number of mold colonies in rice was performed from the angle of spectral analysis...
August 8, 2017: Journal of the Science of Food and Agriculture
Mekhala D K Vithana, Zora Singh, Stuart K Johnson
BACKGROUND: Mango fruit (Mangifera indica L.) is renowned for its pleasant taste and as a rich source of health beneficial compounds. The aim of this study was to investigate the changes in concentrations of health-promoting compounds viz., ascorbic acid, carotenoids, antioxidants, lupeol, mangiferin, total phenols, individual phenolic acids as well as ethylene production and respiration rates during climacteric ripening in 'Kensington Pride' and 'R2E2' mango fruit. RESULTS: The climacteric ethylene and respiration peaks were noted on the third day of fruit ripening period...
August 8, 2017: Journal of the Science of Food and Agriculture
Natalia Falagán, Francisco Artés, Encarna Aguayo
BACKGROUND: Extra early nectarine cultivars such as 'VioWhite 5' could present a lack of organoleptic and nutritional quality. Heat treatments (HT) can be applied to improve their primary characteristics. In this experiment, Control [non-treated], HT1 [3 h; 45 °C] and HT2 [2 h; 50 °C] were studied. Fruit were stored [10 days; 0 ± 0.5 °C; 90-95% RH] followed by a simulated retail sale period [3 days; 15 °C; 70-75% RH]. RESULTS: HT fruit showed higher weight loss (2...
August 8, 2017: Journal of the Science of Food and Agriculture
Camelia Papuc, Corina Nicoleta Predescu, Liliana Tudoreanu, Valentin Nicorescu, Iuliana Gajaila
BACKGROUND: Following public concern on the use of synthetic food antioxidants, there is an increasing demand for the application of mixed or purified natural antioxidants to maintain meat produces quality during storage. The aim of this research was to investigate the effect of hawthorn berries' ethanolic extract compared to butylated hydroxylanisole (BHA), on lipid peroxidation, myoglobin oxidation, protein electrophoresis pattern, consistency and firmness of minced pork during refrigeration at 4 °C and to identify the relationship between chemical modifications and consistency variation...
August 7, 2017: Journal of the Science of Food and Agriculture
Ershad Sheibani, Arasb Dabbagh Moghaddam, Anoosheh Sharifan, Zahra Afshari
BACKGROUND: To minimize the mortality rates of individuals affected by disasters, providing high-quality food relief during the initial stages of an emergency is crucial. The goal of this study was to develop a formulation for a high-energy, nutrient-dense prototype using linear programming (LP) model as a novel method for developing formulations for food products. RESULTS: The model consisted of the objective function and the decision variables which were the formulation costs and the weights of the selected commodities, respectively...
August 4, 2017: Journal of the Science of Food and Agriculture
Haixia Yu, Shuibing Yang, Chunhong Yuan, Qinglan Hu, Yuan Li, Shiguo Chen, Yaqin Hu
BACKGROUND: Tg and food moisture content is closely related especially in high moisture content such as surimi products. In order to improve the storage condition and keep food quality, the influence of six biopolymers on the Tg of hairtail fish meat paste was investigated by differential scanning colorimetry. RESULTS: Obtained samples were stored at -8 °C (>Tg), -14 °C (Tg) and -18 °C (< Tg) for 105 days. The results showed that trehalose, maltodextrin and xanthan could obviously improve the Tg of the hairtail fish meat paste...
August 4, 2017: Journal of the Science of Food and Agriculture
Sakhi Ghelichi, Bahareh Shabanpour, Parastoo Pourashouri, Mona Hajfathalian, Charlotte Jacobsen
BACKGROUND: Common carp roe is a rich protein and oil source, which is usually discarded with no specific use. The aims of this study were to extract oil from the discarded roe and examine functional, antioxidant, and antibacterial properties of defatted roe hydrolysates (CDRHs) at various degrees of hydrolysis (DH). RESULTS: Gas chromatography (GC) of fatty acid methyl esters (FAMEs) revealed that common carp roe oil contained high level of unsaturated fatty acids...
August 3, 2017: Journal of the Science of Food and Agriculture
Lara Abou Chehade, Ziad Al Chami, Sandra Angelica De Pascali, Ivana Cavoski, Francesco Paolo Fanizzi
BACKGROUND: Biostimulants have gained recently an increased attention due to their multiple benefits for sustainable agriculture. In this study, three food processing by-products - fennel processing residues (FPR), lemon processing residues (LPR) and brewers' spent grain (BSG) - were investigated as potential sources of biostimulants. Their aqueous extracts as individual and associated applications were assessed for their effects on agronomic, quality and metabolic performances of organic tomato in comparison to humic substances extract (HS) and untreated control (CTRL)...
August 3, 2017: Journal of the Science of Food and Agriculture
Gema Baeza, Beatriz Sarriá, Laura Bravo, Raquel Mateos
BACKGROUND: Beverages prepared from antioxidant rich plants are sources of polyphenols, which bioactivity depends on bioaccesibility in the gastrointestinal tract. This work evaluated the polyphenol content and antioxidant capacity of widely consumed beverages such as chamomile tea, yerba mate, a coffee blend (65% roasted:35% green), and coffee-like substitutes such as chicory, malt and a soluble cereal mixture. Additionally, the bioaccesibility of the two beverages with the highest antioxidant capacity was evaluated using an in vitro digestion model...
August 3, 2017: Journal of the Science of Food and Agriculture
Tian Gao, Minmeng Zhao, Lin Zhang, Jiaolong Li, Lanlin Yu, Feng Gao, Guanghong Zhou
BACKGROUND: During the last phase of incubation, dramatic physiological and metabolic changes occur in chick embryos, and the supplies of the nutrients and energy are always insufficient. This study was to investigate the effects of in ovo feeding (IOF) of L-arginine (Arg) on the hatchability, growth performance, intestinal development and functions of posthatch broilers. RESULTS: The IOF of Arg increased (P<0.05) the feed intake and body weight gain during 1-21 d and 1-42 d, the intestinal weight of 7 and 21-d-old broilers compared with NC and DG groups...
August 3, 2017: Journal of the Science of Food and Agriculture
Masao Higo, Yuichi Takahashi, Kento Gunji, Katsunori Isobe
BACKGROUND: Better cover crop management options to maximize the benefits of arbuscular mycorrhizal fungi (AMF) to subsequent crops are largely unknown. We investigated the impact of cover crop management methods on the maize growth performance and assemblages of AMF colonising maize roots in a field trial. The cover crop treatments comprised Italian ryegrass, wheat, brown mustard and fallow in rotation with maize. RESULTS: The diversity of AMF communities among cover crops used for maize management was significantly influenced by the cover crop and time course...
July 31, 2017: Journal of the Science of Food and Agriculture
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