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http://dx.doi.org/10.3746/jkfn.2011.40.1.037

Antimutagenicity of Korean Sweet Potato (Ipomoea batatas L.) Cultivars  

Park, Jeong-Seob (Dept. of Bioprocess Engineering, Graduate School, Chonbuk National University)
Bae, Jae-O (Dept. of Food Science & Technology, Graduate School, Chonbuk National University)
Choi, Gyu-Hwan (Jeollabuk-Do Agricultural Research and Extension Service)
Chung, Bong-Woo (Dept. of Bioprocess Engineering, Graduate School, Chonbuk National University)
Choi, Dong-Seong (Dept. of Food and Biotechnology, Woosuk University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.40, no.1, 2011 , pp. 37-46 More about this Journal
Abstract
Polyphenolic content and antimutagenicity of the methanol extracts prepared from 22 cultivars of sweet potato with different flesh colors were investigated using Folin-Ciocalteu's phenol reagent method and Ames test, respectively. There was a remarkable cultivar difference in the polyphenolic content of sweet potato. Su, Hayanmi and Shinhwangmi among 17 cultivars of non-purple sweet potato had higher polyphenolic contents of 21.4, 21.5 and $20.3{\mu}g$ (GAE/g dried sweet potato), respectively, whereas Manami and Yeonhwangmi were very much lower at 4.6 and $4.8{\mu}g$. Mokpo No.62, Borami, Sinjami, Jami and Ayamurasaki had much higher polyphenolic contents of 67.7, 76.9, 44.9, 128.3 and $93.2{\mu}g$, respectively, than non-purple sweet potato. The methanol extract from the sweet potato effectively inhibited the reverse mutation induced by 1-NP, daunomycin, Trp-P-1, Trp-P-2 and 2-AA on S. Typhimurium TA 98, and by 1-NP on S. Typhimurium TA 100. These results suggest that the antimutagencity properties may be influenced by the tested mutagen and strain rather than the polyphenolic content of non-purple and purple sweet potato. However, in the purple sweet potatoes, a high polyphenolic content may influence the antimutagencity properties.
Keywords
sweet potato; purple sweet potato; polyphenol; antimutagenicity;
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