Seasonal and Annual Changes in the Quality of Polygonatum Cyrtonema Rhizomes
Author Information
Author(s): Pu Weiting, Yu Yefei, Shi Xiaoxiao, Shao Ye, Ye Bihuan, Chen Youwu, Song Qiyan, Shen Jianjun, Li Haibo
Primary Institution: Zhejiang Agriculture and Forestry University
Hypothesis
This study aims to reveal the interannual and seasonal variations in functional components in Polygonatum cyrtonema Hua. rhizomes and evaluate whether the variations significantly affect the quality of rhizomes as a traditional Chinese herbal medicine.
Conclusion
The interannual and seasonal variations in functional components significantly affect the quality of P. cyrtonema rhizomes, with the four-year-old rhizomes showing the highest quality.
Supporting Evidence
- The functional components in P. cyrtonema rhizomes exhibited a significant increase in accumulation during the one- to four-year growth period.
- The most active accumulation occurred during the three- to four-year growth period.
- Rhizomes harvested in spring contained more flavonoids, alkaloids, and phenolic acids, while those from autumn comprised more steroids.
- The four-year-old rhizomes had the most superior quality due to their higher content of functional components.
Takeaway
This study found that the quality of a plant used in traditional medicine changes depending on when it's grown and harvested, with the best quality coming from four-year-old plants harvested in spring.
Methodology
The study used metabolomics methods to analyze the total flavonoid and saponin content in rhizomes over a five-year growth period and during two traditional harvesting seasons.
Limitations
The study primarily focused on metabolomic analysis without exploring the molecular mechanisms behind the observed variations.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website