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http://dx.doi.org/10.3746/jkfn.2011.40.6.775

Antioxidant and Angiotensin Converting Enzyme I Inhibitory Activity on Different Parts of Germinated Rough Rice  

Kim, Hyun-Young (Dept. of Food Science and Technology, Chungbuk National University)
Hwang, In-Guk (Dept. of Agrofood Resources, NAAS, RDA)
Kim, Tae-Myoung (College of Veterinary Medicine, Chungbuk National University)
Park, Dong-Sik (Dept. of Agrofood Resources, NAAS, RDA)
Kim, Jae-Hyun (Dept. of Agrofood Resources, NAAS, RDA)
Kim, Dae-Joong (College of Veterinary Medicine, Chungbuk National University)
Lee, Jun-Soo (Dept. of Food Science and Technology, Chungbuk National University)
Jeong, Heon-Sang (Dept. of Food Science and Technology, Chungbuk National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.40, no.6, 2011 , pp. 775-780 More about this Journal
Abstract
We investigated the changes in antioxidant and angiotensin converting enzyme I (ACE) inhibitory activity in different parts of 'Ilpum' (Oryza sativa L.) rough rice before and after germination. Rough rice, either before or after germination, were separated into hull, brown rice, or sprout, and then extracted with distilled water and 70% ethanol. After germination, the total polyphenol contents of the distilled water extract of the brown rice was higher than before germination (5.84 and 1.67 mg/g, respectively). The DPPH radical scavenging activity on the unseparated rough rice ethanol extract increased from 22.95% before germination to 31.32% after germination, but it decreased in both the hull and brown rice extracts. The ABTS radical scavenging activity was highest in the sprout extract with a value of 4.41 mg AA eq/g. The reducing power of the brown rice ethanol extract increased from 0.32 before germination to 0.45 after germination. The ACE inhibitory activity of the in hull ethanol extract increased after germination. These results indicate that antioxidant capacity increases in the hull and sprout after germination could be considered having significant health benefits.
Keywords
rough rice; germination; ACE inhibitory activity; antioxidant activity; reducing power;
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