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KMID : 0665220150280050737
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Korean Journal of Food and Nutrition
2015 Volume.28 No. 5 p.737 ~ p.744
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Phenolic Compounds and Radical Scavenging Activity of the Korean Wheat (Triticum aestivum L.) according to Germination Times
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Ham Hyeon-Mi
Choi In-Duck
Park Hye-Young
Yoon Soon-Duck
Oh Sea-Kwan
Kim Uk-Han
Woo Koan-Sik
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Abstract
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The purpose of this study was to evaluate the phenolic compounds and radical scavenging activity of the Korean wheat (Triticum aestivum L.) according to germination times. The cultivated varieties were T. aestivum L. cv. Keumkang, Jokyung, Baekjoong, and Goso. The total polyphenol, flavonoid, and tannin contents of the ethanolic extracts of wheat were significantly increased with longer germination times. The total polyphenol contents of ungerminated Keumkang, Jokyung, Baekjoong, and Goso were 13.74, 15.05, 16.84, and 13.02 mg GAE/100 g, respectively, and the contents in germinated wheats increased with longer germination times. The total flavonoid contents of ungerminated wheats were 5.11, 6.72, 6.28, and 5.43 mg CE/100 g, and the total tannin content was 9.19, 8.86, 8.93, and 8.66 mg TAE/100 g, respectively. The total flavonoid and tannin contents were substantially increased with longer germination times. The DPPH radical scavenging activity of ungerminated Keumkang, Jokyung, Baekjoong, and Goso was 30.77, 23.88, 25.35, and 18.73 mg TE/100 g, and the activity in wheats germinated at 25℃ for 72 hours was 47.47, 44.17, 38.22, and 42.85 mg TE/100 g, respectively. The ABTS radical scavenging activity of ungerminated wheats was 3.42, 88.53, 88.87, and 79.97 mg TE/100 g, respectively, and the activity in germinated wheats increased with longer germination times.
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KEYWORD
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wheat(Triticum aestivum L.), germination, polyphenol, flavonoid, antioxidant activity
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