期刊
FOODS
卷 8, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/foods8120680
关键词
hull-less barley; beta-glucan content; hordeins; phenolic acids; antioxidant activity; roller milling
资金
- Programme of Continuous scientific work on the creation of new varieties of barley at the Agricultural Institute Osijek
Two hull-less barley varieties were roller-milled, and breaks (B) and reduction flours (C), shorts, and bran were collected. Shorts, which mainly originate from endosperm cells with a smaller amount of the outer layers, had the largest yield (48.87-51.54%). Ash (0.82-3.10%) and protein (9.95-14.8%) increased from flours toward shorts and bran, while starch decreased (82.31-48.69%). In contrast to clear distribution differences in protein content (bran > shorts > C > B), albumins/globulins content was lowest in bran (0.78-0.90 g/100 g(dw)), and their distribution between fractions was uneven and genotype dependent. Distribution of hordeins (6.69-10.49 g/100 g(dw)) was more distinct and generally decreased in order from bran > B > shorts > C. The proportion of nutritionally poor C-hordeins in total hordeins varied from 28.33% to 30.24%, without significant differences between fractions. The beta-glucan content varied from 0.80% to 7.49% with decreasing content in the order bran, shorts > C > B. Shorts and bran could be classified as moderate and high beta-glucan flour (5.70-7.22%). The total phenolic and antioxidant activities ranged from 0.91 to 2.21 mg GAE/g(dw) and 28.81-72.06%, respectively. Ferulic and sinapic acids determined by high-performance liquid chromatography (HPLC) were major contributors to the antioxidant activity (45.16-1026.91 ug/g(dw) and 18.93-206.52 ug/g(dw)), respectively. The yield and high content of phytonutrients make hull-less barley shorts suitable for the production of health-promoting food and food supplements.
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