A novel method for age identification of mountain‐cultivated ginseng

人参 木质部 多年生植物 传统医学 染色 生物 植物 草本植物 医学 草药 病理 替代医学 遗传学
作者
G.-Z. Zhang,Qiong Huang,Gan Chen,Man Yuan,Changwu Zheng,Hongmei Zhang,Xu Hong
出处
期刊:Microscopy Research and Technique [Wiley]
卷期号:86 (9): 1197-1205
标识
DOI:10.1002/jemt.24393
摘要

Abstract Panax ginseng , a slow‐growing perennial herb, is the most praised and popular traditional medicinal herb. Mountain‐cultivated ginseng (MCG) and cultivated ginseng (CG) both belong to Panax ginseng C. A. Meyer. The market price and medical effects of this popular health product are closely related to its age. It is widely acknowledged that CG is typically harvested after 4–6 years of growth, but MCG is often collected after 10 years. Until now, the age identification of MCG or mountain wild ginseng (MWG) has remained a major challenge. In this study, we established a novel and rapid method for staining xylem vessels with phloroglucinol and identifying the “annual growth rings” of ginseng by utilizing a stereoscope, which serves as a reliable indicator of the age of MCG. Statistical analysis of the ring radius and the ring density of MCG aged from 1 to 20 years shows that the secondary xylem of MCG increases rapidly in the first 3 years but then gradually slows down from 4 to 10 years, and minor fluctuation is observed in the next 10 years. Meanwhile, the space between the growth rings (ring density) becomes increasingly small with age. This straightforward staining approach can reveal the age of MCG with remarkable clarity and can distinguish MCG from CG. Research Highlights A novel rapid staining method for Panax ginseng was established. The age of mountain‐cultivated ginseng (MCG) can be identified by microscopic techniques. MCG and cultivated ginseng (CG) can be discriminated by microstructure characteristics.
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