Abstract
Effects of antioxidant compounds and antioxidant activities of proso millet cultivated in different areas were determined. The cultivated areas were Milyang (plain area of interior), Wonju (mountainous territory) and Sinan (coastal area), and cultivated varieties were Hwanggeumgijang (HGG), Byeoruk-gijang (BRG), Norangchal-gijang (NRG), Bulgeun-gijang (BGG), Whin-gijang (WG). The highest total polyphenol contents of methanolic extracts were 2.54 and 2.65 mg/g in BGG and BRG produced in Sinan, respectively. The highest total flavonoid content were 2.66 and 2.59 mg/g in BGG and BRG produced in Sinan, respectively. The highest total tannin contents were 1.87 and 1.42 mg/g in BRG and NRG produced in Sinan. The DPPH radical-scavenging activity was the highest value of BGG (8.54 mg TE/g) and BRG (8.53 mg TE/g) produced in Sinan. The ABTS radical-scavenging activity was the highest value of BGG and BRG of 19.48 and 19.29 mg TE/g in the grains produced in Sinan, respectively. Generally, there was difference in antioxidant compound contents on the methanolic extracts of proso millet between the cultivated areas and varieties.
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