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KMID : 1134820070360050584
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Journal of the Korean Society of Food Science and Nutrition
2007 Volume.36 No. 5 p.584 ~ p.588
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Effects of Chitosan Treatment on Changes of Soyasaponin Contents in Soybean Sprouts
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Oh Bong-Yun
Park Bock-Hee
Ham Kyung-Sik
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Abstract
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Elicitors are defined as substances that induce defense responses in plants, which include an increased synthesis of secondary metabolites. Saponin, one of the secondary metabolites, has various physiological effects such as anticancer, antioxidant, cholesterol-lowering activities, etc, in human. This study was carried out to find whether a treatment of soybean sprouts with chitosan as an elicitor, increases saponin contents. Saponin contents in soybean sprouts increased by the chitosan treatment during cultivation, reached the peak on the sixth day, and then decreased. A biosynthesis of group B soyasaponin appeared to be regulated differently. The content of soyasaponin Ⅰ, a member of group B saponin, was the highest in 250 ppm chitosan-treated soybean sprouts, while the contents of soyasaponin Ⅱ, Ⅲ and Ⅳ were the highest in 1,000 ppm chitosan-treated soybean sprouts. The content of soyasaponin Ⅴ changed little in soybean sprouts that had been treated with various concentration of chitosan.
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KEYWORD
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soybean sprout, chitosan, elicitor, soyasaponin
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