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KMID : 1134820110400010037
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Journal of the Korean Society of Food Science and Nutrition
2011 Volume.40 No. 1 p.37 ~ p.46
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Antimutagenicity of Korean Sweet Potato (Ipomoea batatas L.) Cultivars
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Park Jeong-Seob
Bae Jae-O
Choi Gyu-Hwan
Chung Bong-Woo
Choi Dong-Seong
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Abstract
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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 ㎍ (GAE/g dried sweet potato), respectively, whereas Manami and Yeonhwangmi were very much lower at 4.6 and 4.8 ㎍. 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 μg, 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.
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KEYWORD
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sweet potato, purple sweet potato, polyphenol, antimutagenicity
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