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[Comparative analysis of ginsenosides from red ginseng]
Wei-yun Zhang1, Quan-cheng Chen, Ji-rui Hou
1College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
Summary
Red ginseng root hair contains significantly more ginsenosides than the main root. Larger main roots correlate with lower ginsenoside content, impacting red ginseng quality.
Area of Science:
- Phytochemistry
- Pharmacognosy
- Analytical Chemistry
Background:
- Red ginseng is a popular traditional medicine with diverse bioactive compounds.
- Ginsenosides are key active components in ginseng, known for their therapeutic properties.
- Variations in ginsenoside content can occur based on ginseng part and size.
Purpose of the Study:
- To quantify six specific ginsenosides (Rg1, Re, Rb1, Rc, Rb2, Rd) in red ginseng.
- To compare ginsenoside content between the main root and root hair.
- To investigate the relationship between red ginseng specifications (size/volume) and ginsenoside levels.
Main Methods:
- Ultrasonication was employed for the extraction of ginsenosides.
- Reversed-phase high-performance liquid chromatography (RP-HPLC) was utilized for separation and quantification.
Main Results:
- The total content of the six analyzed ginsenosides in root hair was 8.16%.
- Main root samples showed lower total ginsenoside content: 1.21% (15 roots/500g), 1.46% (20 roots/500g), and 1.54% (30 roots/500g).
- A clear inverse relationship was observed: larger main ginseng roots had less ginsenoside content.
Conclusions:
- Red ginseng root hair is a richer source of these six ginsenosides compared to the main root.
- Ginsenoside concentration decreases as the size (volume) of the red ginseng main root increases.
- These findings have implications for quality control and processing of red ginseng products.