Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Solubility and Electrophoretic pattern of Korea Ginseng Protein

한국산 인삼 단백질의 용해성 및 전기영동 패턴

  • Choi, Cheong (Dept. of Food Science and Technology, Yeungnam University) ;
  • Yoon, Sang-Hong (Dept. of Food Science and Technology, Yeungnam University) ;
  • Bae, Man-Jong (Dept. of Oriental Medicine, Daegu Oriental Medical College) ;
  • An, Bong-Jeon (Dept. of Food Science and Technology, Yeungnam University)
  • 최청 (영남대학교 식품가공학과) ;
  • 윤상홍 (영남대학교 식품가공학과) ;
  • 배만종 (대구한의과대학 한의학과) ;
  • 안봉전 (영남대학교 식품가공학과)
  • Published : 1985.06.30
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Abstract

For the systematic investigation of biochemical characteristics of Korean ginseng protein, protein fractions were analyzed by the techniques of sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis. The effect of pH and various salts on extractibility of ginseng protein were determined while the amino acid composition was studied by amino acid autoanalyzer. The protein was consisted of 66.08% of albumin and 20.51% of glutelin. Extractability of ginseng protein was the lowest in pH 3.0 and the highest in $pH\;6.0{\sim}8.0$. Among the neutral salts solution, $0.4M\;Na_2CO_3$ showed maximum extractability while $1.0M\;MgSO_4$ solution showed the least extractability. Resonable precipitation was obtained by 40% of acetone and ammonium sulfate. It has been shown by SDS polyacrylamide gel electrophoresis that the soluble protein had 11 bands. The molecular weight for the main protein of the soluble protein wasestimated to be 43,000. In amino acid composition of water extracted protein, arginine content was the highest 47.17% while on the contray, proline and cystine contents were very low.

한국산 인삼 단백질의 생화학적 특성을 체계적으로 규명하기 위하여 단백질의 분별정량, SDS polyacrylamide gel 전기영동, pH에 의한 단백질의 용출성 및 아미노산 포성을 분석한 결과는 다음과 같다. 인삼 단백질의 분별정량은 albumin이 66.0%로 가장 많았으며 glutelin이 20.5%이었고 인삼 단백질의 pH에 의한 용출성은 pH3에서 최저를 나타내었으며 $pH6{\sim}8$에서 최고치를 나타내었고 염의 종류 및 그 농도별에 의한 추출성은 sodium염의 경우 차이가 없었다. 수용성 단백질의 침전도는 40%의 ammonium sulfate와 acetone에 의하여 96% 침전하였으며 SDS-poly-acrylamide gel 전기영동의 결과 11개의 band가 확인되었으며 수용성 단백질의 주 단백질의 분자량은 43,000이었다. 수용성 단백질의 아미노산조성은 18종류로써 arginine의 함량이 45.17%로 가장 많았으며 proline 및 cystine의 함량은 매우 낮았다.

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