Study on mineral elements and effective components of Uncaria rhynchophylla（Miq.）Miq. ex Havil based on principal component analysis

Li Jin-ling, Guizhou University, Guizhou Guiyang 550025, China; Guizhou Key(Engineering) Laboratory for Propagation and cultivation of Medicinal Plants, Guiyang 550025, China

ZHAO Zhi, Guizhou University, Guizhou Guiyang 550025, China; Guizhou Key(Engineering) Laboratory for Propagation and cultivation of Medicinal Plants, Guiyang 550025, China

Luo Chun-li, Guizhou University, Guizhou Guiyang 550025, China; Guizhou Key(Engineering) Laboratory for Propagation and cultivation of Medicinal Plants, Guiyang 550025, China

Wang Hua-lei, Guizhou University, Guizhou Guiyang 550025, China; Guizhou Key(Engineering) Laboratory for Propagation and cultivation of Medicinal Plants, Guiyang 550025, China

Luo Fu-lai, Guizhou University, Guizhou Guiyang 550025, China; Guizhou Key(Engineering) Laboratory for Propagation and cultivation of Medicinal Plants, Guiyang 550025, China

Abstract
Purpose: To study the contents of mineral elements and effective components of Hook branch of Uncaria rhynchophylla（Miq.）Miq. ex Havil from different sources, analyze the relationship between characteristic elements, mineral elements and effective components of hook branch and evaluate the quality of medicinal materials.
Method: The contents of 10 essential mineral elements of hook branch from different sources were determined by ICP. Alkaloids were determined by HPLC. The characteristic elements of hook branches and comprehensive evaluation were analyzed by principal component analysis.
Results: The content of N in hook branch was the highest with an average content of 7.38g.kg-1. The content of trace element Mn was high with an average content of 2083.58mg.kg-1. The variation coefficient of P element content was the biggest, and it was 44.47%. The variation coefficient of Ca element was the smallest, and it was 17.83%. There was a significant positive correlation between K and total alkaloids, Zn and isorhynchophylline, Mn and rhynchophylline and total alkaloids. Cu was positively correlated with isorhynchophylline. Four principal components were selected to evaluate the quality of hook branch by principal component analysis. It was found that the characteristic elements of Gastrodia elata were K, Cu, CA, P, N and B.
Conclusion: The content of N in hook branch is high and relatively stable. K. Cu, Mn and Zn were positively correlated with alkaloid metabolism. The comprehensive evaluation shows that the quality of the hook branch managed scientifically in Qiandongnan Prefecture ,Guizhou Province is good.

Keywords
Uncaria rhynchophylla（Miq.）Miq. ex Havil, Mineral element; Extract; Rhynchophylline; Isorhynchophylline; Principal component analysis (PCA)

Cite this paper
Li Jin-ling, ZHAO Zhi, Luo Chun-li, Wang Hua-lei, Luo Fu-lai, Study on mineral elements and effective components of Uncaria rhynchophylla（Miq.）Miq. ex Havil based on principal component analysis , SCIREA Journal of Clinical Medicine. Volume 7, Issue 5, October 2022 | PP. 283-301. 10.54647/cm32899

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