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Variation of Antioxidant and Anticancer Activities of Hull and Bran Extracts in Different Colored Rices  

Shin, So-Hee (Department of Crop Science and Biotechnology, Chonbuk National University)
Chung, Nam-Jin (Department of Crop Science and Biotechnology, Chonbuk National University)
Publication Information
Korean Journal of Breeding Science / v.43, no.4, 2011 , pp. 297-303 More about this Journal
Abstract
In order to confirm the biological activities of rice bran and hull, total phenolic content, antioxidant and anticancer activities were examined in three rice varieties that have different seed coat colors such as brown, black, and purple. The antioxidant activity was measured by free radical scavenging assay including DPPH, $ABTS^+$ and reducing power activity. The anticancer activity was evaluated by WST assay with human HepG2 cell lines. As the result, Huegjinju, black seed coat rice, showed higher of the total phenolics contents in both bran and hull, than purple Jeojinju and brown Ilpum. In the antioxidant activity, Heugjinju showed the highest among the bran extracts, but the activities of hull extracts were similar in three varieties. In the anticancer activity to HepG2 cell line, the hull extract was 20% higher than that of bran extract in the average of three varieties. The hull extracts of Ilpum and Jeokjinju showed similar anticancer activites about 92%, and that of Heugjinju showed the lowest activity of 30.4%. The anticancer activities of hull extracts in three varieties showed positive correlation with total phenolics contents, DPPH radical scavenging activities and reducing power activities. In conclusion, the rice bran and hull showed potent antioxidant and anticancer activities varied in three varieties that have different seed coat colors.
Keywords
Colored rice; Bran; Hull; Antioxidant; Anticancer;
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Times Cited By KSCI : 8  (Citation Analysis)
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