Comparison of Ginsenoside Content and Ratio of Root Tissue According to Root Age and Diameter in Panax ginseng C. A. Meyer

Abstract

: This study was carried out to investigate change of ginsenoside contents according to tissue ratio in ginseng root by age and diameter. The epidermis-cortex and xylem-pith extent, fresh weight, dry weight of ginseng increased with the root age increase. They increased higher in xylem-pith than in epidermis-cortex. The ratio of epidermis-cortex decreased and xylem-pith increased as the main root diameter increased. In case of same diameter, the xylem-pith ratio increased by the increase of root age. The epidermis-cortex ratio was 4 > 5 > 6 years, respectively. The total 10 ginsenosides of epidermis-cortex increased with the root age increase. However, the total ginsenoside of xylem-pith decreased and it was 2~5 times lower than epidermis-cortex. The most of ginsenoside contents existed in epidermis-cortex. The diameter decrease in main root is related to the increase of epidermis-cortex ratio. It leads to increase of ginsenoside contents. In order to select high level of ginsenoside cultivar, it suggested that it should be selected main root having narrow diameter and lower epidermis-cortex ratio.Key Words : Panax ginseng, Diameter, Epidermis-Cortex, Xylem-Pith, Ginsenoside Content et al., 1983;Lim, 2005), 뿌리의 조직 (Lee et al., 1978;Park et al., 1982;Tani et al., 1981), 뿌리의 부위 (Kim et al., 1984(Kim et al., , 1987 재료 및 방법 Ginsenoside 분석Ginsenoside 추출은 각 시료를 3반복으로 3 g 측량하여 50% methanol 60 ㎖를 250 ㎖의 삼각플라스크에 넣고 ultra-sonicater (60 khz, heat power 330 W; JAC Ultrasonica 4020, KODO, 중심주 19.68, 22.37, 30.18 g이고, 피층의 생 체중 비율은 각각 49.9, 42.7, 44.3%로 고년 근으로 갈수록 감소하였다. 건물중은 피층이 4.92, 5.32, 6.78 g, 중심주 4.58, 5.43, 7.92