Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effects of Chitosan Treatment on Changes of Soyasaponin Contents in Soybean Sprouts

키토산 처리가 콩나물의 Soyasaponin 함량변화에 미치는 효과

  • Oh, Bong-Yun (Food Industrial Technology Research Center, Mokpo National University) ;
  • Park, Bock-Hee (Food Industrial Technology Research Center, Mokpo National University) ;
  • Ham, Kyung-Sik (Food Industrial Technology Research Center, Mokpo National University)
  • 오봉윤 (목포대학교 식품산업기술연구센터) ;
  • 박복희 (목포대학교 식품산업기술연구센터) ;
  • 함경식 (목포대학교 식품산업기술연구센터)
  • Published : 2007.05.30
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Abstract

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.

키토산을 농도별로 처리하여 재배한 콩나물의 조사포닌은 대조구에 비해 모두 키토산을 처리한 콩나물에서 더 많이 증가하였다. 생장기간 별로 키토산을 처리했을 때, 생장 $5{\sim}6$일째 조사포닌 함량이 가장 높았으며 대조구, 2,000, 1,000, 500 ppm 그리고 250 ppm 농도로 키토산을 처리한 콩나물 순서로 조사포닌 함량이 증가하였다가 7일째에는 감소하였다. 키토산을 농도별로 처리한 콩나물에서 그룹 B 사포닌의 함량을 분석하였을 때 soyasaponin I 은 250 ppm 처리구 콩나물에서 가장 높았으며 더 높은 농도로 처리했을 때에는 키토산의 농도에 따라서 함량이 감소하였다. Soyasaponin II의 함량은 대조구 콩나물보다 키토산 처리구 콩나물이 키토산의 농도를 증가시켜 처리하였을 때 증가하여 1,000 ppm을 처리했을 때 최고값을 보이다가 더 높은 농도인 2,000ppm을 처리했을 때에는 감소하였다. 하지만 콩나물 재배중 키토산 처리는 soyasaponin V의 함량변화에는 거의 영향을 미치지 않았다. Sovasaponin III과 IV의 함량은 soyasaponin II와 비슷하게 키토산을 1,000 ppm 처리할 때까지 농도에 따라 증가하였으나 유의적인 차이는 아니었으며 2,000 ppm 키토산 처리구에서는 약간 감소하였다.

Keywords

References

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