Growth and Ginsenoside Content in Different Parts of Ginseng Sprouts Depending on Harvest Time
2018
Jang, I.B., NIHHS, RDA, Eumseong, Republic of Korea | Yu, J., NIHHS, RDA, Eumseong, Republic of Korea | Suh, S.J., NIHHS, RDA, Eumseong, Republic of Korea | Jang, I.B., NIHHS, RDA, Eumseong, Republic of Korea | Kwon, K.B., NIHHS, RDA, Eumseong, Republic of Korea
Background: Since the revised Ginseng Industrial Act was passed, ginseng sprouts have become a new medicinal vegetable for which there is high consumer demand. However, the existing amount of research and data on ginseng production has not kept pace with this changed reality. Methods and Results: In this study we analyzed the changes in the amounts of ginsenosides in different parts of growing ginseng sprouts during the period from when organic seedlings were planted in nursery soil until 8 weeks of cultivation had elapsed, which was when the leaves hardened. In the leaves, ginsenoside content increased 1.62 times with the panaxadiol (PD) system and 1.31 - 1.56 times with the panaxatriol (PT) system from 7 to 56 days after transplantation. During the same period, the total ginsenoside content of the stems decreased by 0.66 - 0.91 times, and those of the roots increased until the 21st day, and then underwent steep declines. The effect of fermented press cake extract (FPCE) and tap water (TP) on the total amount of ginsenoside per plant were similar, and could be represented with the equations y = 1.4330 + 0.2262x - 0.0008x2and y = 0.9555 + 0.2997x - 0.0031x2in which y = ginsenoside content x = amount of and on the total amounts of FPCE or TP, respectively after 26.4 days, however, the difference between ginsenoside content with FPCE and TP widened. Conclusions: These results suggested that the amounts of ginsenosides in different parts of ginseng varied with the cultivation period and nutrient supply. These findings also provide fundamental data on the distribution of ginsenosides among plant parts for 2-year-old ginseng plants in the early- growth stage.
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