Preventive Nutrition and Food Science

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Some Physiological Activities Observed from Ethanol Extracts of Germinated Specialty Rough Rice

  • Lee, Youn-Ri (Department of Food Science and Technology, Chungbuk National University) ;
  • Hwang, In-Guk (Department of Food Science and Technology, Chungbuk National University) ;
  • Woo, Koan-Sik (Crop Post-Harvest Technology Division, National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Kee-Jong (Crop Post-Harvest Technology Division, National Institute of Crop Science, Rural Development Administration) ;
  • Jeong, Heon-Sang (Department of Food Science and Technology, Chungbuk National University)
  • Published : 2008.09.30
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Abstract

This study analyzed the some of the physiological activities of 70% ethanol extracts of specialty rough rice ('Goami2', 'Keunnunbyeo', and 'Heugkwangbyeo' rough rice cultivars) before and after germination. The physiological activities of the extracts were analyzed for their inhibition of linoleic acid peroxidation, hydrogen peroxide radical scavenging activity, superoxide dismutase-like activity, xanthine oxidase inhibitory activity, and nitrite scavenging effects. The most active rough rice cultivar was 'Heugkwangbyeo' and germinated 'Heugkwangbyeo' rough rice was more effective than ungerminated rough rice, having higher inhibition activity of linoleic acid peroxidation (1.2-fold), hydrogen peroxide radical scavenging activity (1.4-fold), superoxide dismutase-like activity (1.2-fold), and xanthine oxidase inhibitory activity (1.1-fold). The nitrite scavenging effect was increased after germination (2.1-fold) and decreased as pH increased. According to the results obtained in this study, 70% ethanol extracts from germinated 'Heugkwangbyeo' rough rice can be used for industrial applications such as the functional food materials.

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References

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