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Journal of the Science of Food and Agriculture

Abdul Rehman, Muhammad Farooq, Ahmad Nawaz, Abdullah M Al-Sadi, Khalid Al-Hashmi, Faisal Nadeem, Aman Ullah
BACKGROUND: Zinc (Zn) is essential for all life forms and its deficiency represents the major issue of malnutrition in humans. This study was carried out to characterize the 28 wheat genotypes of Pakistani origin for grain zinc biofortification potential, genetic diversity and relatedness. RESULTS: There was low genetic differentiation among the tested genotypes. However, these wheat genotypes differed greatly for yield related traits and grain mineral concentration (Zn, Ca and protein) and Zn bioavailability...
March 15, 2018: Journal of the Science of Food and Agriculture
Hiroyuki Hattori, Kosei Yamauchi, Siaw Onwona-Agyeman, Thoru Mitsunaga
BACKGROUND: Grains of Paradise (GP) is the seed of Aframomum melegueta, which is widely distributed throughout West Africa and has been used as a spice and a folk remedy for a long time. The anti-obesity effect by GP intake was demonstrated in our previous report. In this present study, we tried to isolate some compounds in GP and clarify the anti-obesity mechanism. RESULTS: Ten vanilloid compounds were determined. Among ten vanilloids, 1-(4'-hydroxy-3'-methoxyphenyl)-decan-3-ol and 1-(4'-hydroxy-3'-methoxyphenyl)-3-octen-5-one were determined as novel compounds and 6-gingerol, 6-paradol, and 6-shogaol were identified as the major constituents in GP extract...
March 15, 2018: Journal of the Science of Food and Agriculture
Chunfeng Liu, Qi Li, Chengtuo Niu, Feiyun Zheng, Yun Zhao
BACKGROUND: Acetaldehyde is an important flavor component in beer, which is possibly carcinogenic to humans. Due to the limit of present detect methods, only the free-state acetaldehyde in beers was focused on, but the acetal in beers had been hardly reported so far. RESULTS: A sensitive HS-GC method was developed for the determination of diethylacetal and acetaldehyde in beer. The column DB-23 was chosen with a total run time of 22.5 min. The optimal addition amount of NaCl, equilibrium temperature and time were 2...
March 15, 2018: Journal of the Science of Food and Agriculture
S Kharchoufi, J Gomez, C Lasanta, R Castro, F Sainz, M Hamdi
BACKGROUND: There is growing interest in the beneficial health effects of certain fruits, such as pomegranate, and their by-products, like vinegar. Vinegars contain antioxidant compounds such as polyphenols, which can scavenge free radicals in the body. In this study, the antioxidant properties (ABTS and DPPH scavenging capacities) and global polyphenolic composition of a new functional product, namely a pomegranate vinegar produced in the laboratory from the Gabsi variety, were evaluated and compared with those of commercial wine vinegars (Sherry and Rioja red wine Spanish vinegars)...
March 15, 2018: Journal of the Science of Food and Agriculture
Anisur Rahman, Mohammad Akbar Faqeerzada, Byoung-Kwan Cho
BACKGROUND: Allicin and soluble solid content (SSC) in garlic is the responsible for its pungent flavor and odor. However, current conventional methods such as high-pressure liquid chromatography (HPLC), refractometer has a critical drawbacks in that they are time-consuming, labor-intensive and destructive procedures. The present study aimed to predict the allicin and soluble solid content (SSC) in garlic using hyperspectral imaging in combination with variable selection algorithms and calibration models...
March 14, 2018: Journal of the Science of Food and Agriculture
Chen Chen, Wenzhong Hu, Ruidong Zhang, Aili Jiang, Chenghui Liu
BACKGROUND: Effect of hydrogen sulfide (H2 S) on inhibiting surface whitening of fresh-cut carrots was investigated. Whitening index, H2 O2 and malondialdehyde (MDA) contents, the activities of catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), phenylalanine ammonialyase (PAL), polyphenol oxidase (PPO) and peroxidase (POD) and antioxidant capacities were evaluated. RESULTS: H2 S treatment significantly inhibited the surface whitening of fresh-cut carrots (P < 0...
March 14, 2018: Journal of the Science of Food and Agriculture
Pilar Mañas, Jorge de Las Heras
BACKGROUND: The objective of the study was to: firstly evaluate the response of nutrient uptake after applying 15 t ha-1 of sewage sludge, compost and a commercial fertiliser to soil in grain and straw of winter wheat (Triticum turgidum L. cv. Vitron); secondly investigate the composition of the same parameters in the original soil and compare them with soil after applying fertiliser treatments. A field-scale experiment established the agronomic performance of air-dried sewage sludge and composted sludge for winter wheat...
March 14, 2018: Journal of the Science of Food and Agriculture
Oksana V Bocharova, Sentyabrina P Reshta, Maiia Y Bocharova, Vasiliy I Eshtokin
BACKGROUND: Organoleptic properties, and positive health effect on consumers, both justify the importance of the determination of apple juice authenticity, in respect of retail and wholesale trade networks worldwide. RESULTS: Adulteration of apple juice through dilution with water, and with ascorbic acid has been determined. It has been demonstrated that polarization curves of platinum electrode (Pt) in apple juice are useful for undeclared antioxidant determination, due to the movement of the polarization curve to the left, by 200 mV, when ascorbic acid was added...
March 13, 2018: Journal of the Science of Food and Agriculture
Mingfeng Li, Zhuqing Zhao, Jiajie Zhou, Daowen Zhou, Boning Chen, Liqiang Huang, Zhihua Zhang, Xinwei Liu
BACKGROUND: Foliar spray of selenium (Se) has increasingly been applied to improve Se concentrations in grain crops, but little information is available about the properties of Se-enriched fruits. In this study, selenium distribution in blueberry and Se effect on blueberry quality were investigated by foliar spraying selenite or selenate (200 g ha-1 ) on two blueberry cultivars (Bluecrop and Northland) during the young fruit or coloring stage. RESULTS: Selenium concentration in blueberry was mainly affected by cultivar and spray stage relative to Se source...
March 13, 2018: Journal of the Science of Food and Agriculture
Maurice Tibiru Apaliya, Hongyin Zhang, Xiangfeng Zheng, Qiya Yang, Gustav K Mahunu, Emmanuel Kwaw
BACKGROUND: Primarily, chemical pesticides are commonly used to control pre- and postharvest diseases of fruits and vegetables. However, there is a strong public apprehension on the probable human and environmental health problems that emanate from the residues of these chemical pesticides. As a result, biocontrol is often preferred due to its safety on humans and animals. The microbial antagonists employed are often encountered with variable climatic conditions which affect their efficacy...
March 13, 2018: Journal of the Science of Food and Agriculture
Paul J Moughan
Traditionally, the study of nutrition has been based on a reductionist approach, reducing a food down to constituent nutrients and then investigating the effects of these nutrients, either singly or together, on metabolism and metabolic outcomes. However, nutrients per se are not consumed by a person, but rather are consumed in the form of foods. Because of this the complex food matrix itself influences nutritional outcomes, which can often not be fully explained on the basis of the effects of "the sum of the nutrients" alone...
March 13, 2018: Journal of the Science of Food and Agriculture
Jiaxing Zhou, Dongmiao Liu, Xiong Deng, Shoumin Zhen, Zhimin Wang, Yueming Yan
BACKGROUND: Water deficiency affects grain proteome dynamics and storage protein compositions, resulting in alterations in gluten viscoelasticity. In this study, we investigated the effects of field water deficit on wheat breadmaking quality and grain storage proteins. RESULTS: Water deficiency produced a shorten grain-filling period and a decrease in grain number, grain weight and grain yield, a reduced starch granule; increased protein content and glutenin macropolymer contents, resulting in superior dough properties and breadmaking quality...
March 12, 2018: Journal of the Science of Food and Agriculture
Pedro García, Concepción Romero, Manuel Brenes
BACKGROUND: The oxidation and polymerization of the phenolic compounds present in black ripe olives give rise to their black shiny colour which is fixed by the addition of ferrous salts such as ferrous gluconate. Among the many variables that can affect the successful of this fixation step, the influence of the pH on this process was assessed on fruits of the Hojiblanca cultivar processed at pilot plant scale. Hence, the aim of this work was to gain knowledge on the development of this fixation step, in particular on olives that were oxidized with a single alkaline treatment...
March 12, 2018: Journal of the Science of Food and Agriculture
Wenjing Wan, Baojun Xu
BACKGROUND: We aimed to develop a beverage using beta-glucan and whey protein isolate (WPI). Furthermore, we evaluated the sensory attributes and changes of the physiochemical properties (pH value, total acidity, total soluble solids, sugar-acid ratio, color, viscosity, turbidity, and browning index) of the beverage during 48-hour storage by comparison with the commercial product and blank sample. RESULTS: The developed beverage had similar sweetness, smoothness, and overall acceptance as those of the commercial and blank samples...
March 12, 2018: Journal of the Science of Food and Agriculture
Andreja Goršek, Jožef Ritonja, Darja Pečar
BACKGROUND: Milk fermentation takes place in the presence of various micro-organisms, whereby a variety of dairy products is produced. The oldest among them is kefir, which is usually produced by fermentation of milk with kefir grains. Carbon dioxide (CO2 ), as one of the process products, also contributes to the characteristic flavor of kefir. The amount of CO2 generated during fermentation depends on bioprocessing conditions and may change, which is not desirable at the industrial level...
March 12, 2018: Journal of the Science of Food and Agriculture
Xuehui Cao, Fangfang Zhang, Dongyu Zhao, Danshi Zhu, Jianrong Li
BACKGROUND: freezing preservation is one of the most effective methods used to maintain flavour and nutritional value of fruit. The effects of different freezing conditions, -20 °C, -40 °C, -80 °C, and immersion in liquid nitrogen on quality changes of freeze-thawed blueberries were studied in this research. The water distribution estimates of blueberries were measured based on low-field NMR analysis. The pectin content, drip loss, and fruit texture were also detected to evaluate quality changes in samples...
March 12, 2018: Journal of the Science of Food and Agriculture
Xiao-Fei Wu, Min Zhang, Bhesh Bhandari, Zhongqin Li
BACKGROUND: Microwave-assisted pulse-spouted bed freeze-drying (MPSFD) uses microwave heating to substitute the customary conduction heating during FD, resulting in high-quality dried samples with short drying time. The aim of this study was to determine the effect of MPSFD on volatile compounds and structural aspects of Cordyceps militaris. In order to highlight the effect of MPSFD, the freeze-drying (FD, recognized for its high-quality products) and hot air dying (HD, the most commonly used) were also evaluated using headspace solid phase micro-extraction combined with gas chromatography-mass spectrometry (HS-SPME-GC-MS) and mid-Fourier transform infrared (FTIR) spectroscopy...
March 8, 2018: Journal of the Science of Food and Agriculture
Aitana Tamayo, Rosa de la Torre, Oscar Ruiz, Pablo Lozano, Maria Alejandra Mazo, Juan Rubio
BACKGROUND: Glass frits with a P2 O5 /K2 O ratio equal to 0.65 and different concentrations of SiO2 (6.5 - 56.0 wt%), CaO (0 - 5.1 wt%) and Al2 O3 (0 - 14.6 wt%) have been prepared and analyzed as potential glass fertilizers (GF). RESULTS: P2 O5 and K2 O were leached primarily within the first 5 days but the total amount is be controlled by the SiO2 /Al2 O3 ratio of the glass frit. Sustained P2 O5 and K2 O leaching for more than 40 days can be obtained if the glass frit containsmore than 7% of Al2 O3 ...
March 8, 2018: Journal of the Science of Food and Agriculture
Maricruz Ramírez-Sánchez, Donald J Huber, C Eduardo Vallejos
BACKGROUND: In fleshy fruits, induced-PCD has been observed in heat-treated tomato, and ethylene-treated and low temperature exposure in immature cucumber. No other fleshy fruit has been evaluated for CI-induced PCD, especially mature fruit with full ripening capacity. The purpose of this research was to identify and evaluate the presence of PCD processes during the development of low temperature-induced physiopathy of banana fruit. RESULTS: Exposure of fruit to 5 °C for 4 days induced degradative processes similar to those occurring during ripening and over-ripening of non-chilled fruit...
March 8, 2018: Journal of the Science of Food and Agriculture
Sokratis Stergiadis, Deborah N Hynes, Anna L Thomson, Kirsty E Kliem, Carolina G B Berlitz, Mevlüt Günal, Tianhai Yan
BACKGROUND: Including forage legumes in dairy systems can help address increasing environmental/economic concerns about perennial ryegrass monoculture pastures. This work investigated the effect of substituting fresh-cut grass with increasing quantities of fresh-cut white clover (WC) on milk fatty acid (FA) profile and transfer efficiency of dietary linoleic (LA) and α-linolenic (ALNA) acids to milk fat. Three groups of three crossbred dairy cows were used in a 3×3 cross-over design...
March 6, 2018: Journal of the Science of Food and Agriculture
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