Effects of Antioxidants on the Photosynsthesis and Carbohydrates/Saponin Contents in Panax ginseng Leaves

인삼잎의 광합성과 탄수화물.사포닌 함량에 미치는 항산화제의 효과

  • 양덕조 (충북대학교 자연과학대학 생물학과) ;
  • 김용해 (충북대학교 자연과학대학 생물학과, 한국인삼연초연구원, 서울대학교 자연과학대학 생물학과)
  • Published : 1994.12.01

Abstract

We studied the folilar wiping effects of antioxidants (ascorbate, glutathione and sodium azide), which effectively inhibited the chlorophyll bleaching or completely recorved the early stage of photosynthesis of Panax ginseng C.A. Meyer, on photosynthesis, stomatal resistance, free sugar, starch, and total saponin contents of ginseng under the excess light intensity (45 kLux) during 6 days. Ascorbate and glutathione, endogenous antioxidant, recovered photosynehtsis and stomatal resistance, and reduced the photoinhibition by the excess light intensity (45 kLux) on free sugar, starch and total saponin contents. But sodium azide, exogenous $^{1}O_2$ quencher, showed negative effect. Therefore, we assumed that carbohydrates and saponin metabolisms of ginseng by antioxidants (ascorbate, glutathione) were normal. For the reduction of inhibition by excess light in ginseng a program for the higher activation of antioxidants and antioxidative enzymes in ginseng leaf will be desirable. Key words Antioxidants, ascorbate, glutathione, Photoinhibition, ginseng.

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