Antioxidaive Activity of Lotus Root(Nelumbo nucifera G.) Extracts.

연근 추출물의 항산화 효과

  • 이재준 (조선대학교 식품영양학과) ;
  • 하진옥 (조선대학교 식품영양학과) ;
  • 이명렬 (조선대학교 식품영양학과)
  • Published : 2007.09.30


This study was investigated on the antioxidant capacity of 80% ethanol extract of lotus root in vitro. The ex-traction yields of 80 % ethanol extract was 9.14%. Lotus root ethanol extract was fractionated by the following: n-hexane, chloroform, ethylacetate and n-butanol. n-Butanol fraction showed the highest ex-traction yield of all fractions. Antioxidative activities of different fractions were examined by l.l-diphenyl-2-picrylhydrazyl(DPPH) radical generation, the Rancimat test, the nitrite scavenging ac-tivity and the thiobarbituric acid(TBA) method, and compared with the properties of the commercial antioxidant butylated hydroxytoluene(BHT). The antioxidative capacity of the ethylacetate fraction was the highest among fractions and its fraction showed higher contents of total polyphenol. Furthermore, the antioxidative capacity of the ethylacetate fraction was similar to that of BHT. In conclusion, these results suggest that lotus root may be a good candidate as a natural antioxidant source.


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