KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)
- Volume 45 Issue 4
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- Pages.261-266
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- 2000
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- 0252-9777(pISSN)
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- 2287-8432(eISSN)
Varietal Variation in Antioxidative Activity of Rice Grain by DPPH and TBA Methods
- Chung, Ill-Min (Dept. of Crop Science, Konkuk Univ.) ;
- Kim, Kwang-Ho (Dept. of Crop Science, Konkuk Univ.) ;
- Ahn, Joung-Kuk (Dept. of Crop Science, Konkuk Univ.) ;
- Lee, Jin-Ohk (Dept. of Crop Science, Konkuk Univ.)
- Published : 2000.09.01
Abstract
This study was to investigate antioxidative activity of rice grain using 1, 1-Diphenyl-2-picrylhydrazyl(DPPH) and thiobarbituric acid (TBA) method and germination ability for screening rice varieties with high antioxidative activities on korean native and foreign rice varieties harvested in 1998 and 1999. The average antioxidative activity of foreign rice varieties (DPPH 63.5% and TBA 55.2%) was significantly higher than that of native rice varieties (DPPH 47.2% and TBA 45.6%) on varieties harvested in 1999. The promptness index (PI) of native rice varieties was higher in stored rices for three months (mean PI=160.7) than that of stored rices for a year (mean PI=141.6). On the other hand, the PI of foreign rice varieties was higher in stored rices stored for a year (mean PI=176.7) than that of stored rices for three months (mean PI=157.5). Varieties with high redness of hulled rice (a-value) showed significant lipid peroxidation inhibitory activity to DPPH in a stored rices for a year (r=