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http://dx.doi.org/10.9799/ksfan.2016.29.5.635

Antioxidant Activities of Mixed Grains  

Kang, Dong Seok (Dept. of Food & Biotechnology, Woosuk University)
Cho, Moon Gu (Dept. of Food & Biotechnology, Woosuk University)
Publication Information
The Korean Journal of Food And Nutrition / v.29, no.5, 2016 , pp. 635-642 More about this Journal
Abstract
The purpose of this study was to investigate the levels of antioxidant activities in some traditional and a few super food mixed rice. Amongst nine chosen samples, traditional five grains were analyzed and results revealed highest content of crude-protein ($8.05{\pm}1.11%$) and lowest crude-fat content ($1.74{\pm}0.29%$); however, the calories was found to be relatively low ($358.05{\pm}0.34kcal$) in the samples. Total polyphenols, flavonoids and tannins were extracted from nine samples with 80% methanol and biochemical activity was measured. The content of total polyphenols, flavonoids and total tannin was $206.5{\sim}452.0{\mu}g/mL$, $0.126{\sim}0.340{\mu}g/mL$, and $548.1{\sim}774.8{\mu}g/mL$, respectively. The traditional five grains showed the highest values except for DPPH radical scavenging activity. DPPH radical scavenging activity was 5 to 40.3% higher in eight samples than the traditional five grains sample. From these results, it is conjectured that a mixture of five grains, might exhibit equal or considerably higher effect as healthy diet when compared to super food. The results from this study would serve as basic data for the use of traditional mixed grains rice diet for good health.
Keywords
mixed grains; total polyphenols; flavonoids; total tannins; antioxidant activities;
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