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Updated: Jun 11, 2026

A Generalized Method for Determining Free Soluble Phenolic Acid Composition and Antioxidant Capacity of Cereals and Legumes
Published on: June 10, 2022
[Content analysis of total polyphenol in the leaves of Jatrophy curcas. L]
Wen-fei Gong1, Tie-shan Wang, Jing-ming Lin
1Pharmacy department, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
Objective:
To establish a method for analyzing the content of total polyphenols in leaves of Jatropha curcas. L.
Methods:
Gallic acid was used as reference substance, the content of total polyphenols was analyzed Folin-Ciocalteu chromatometry.
Results:
There was a good linearity for gallic acid in the range of 0.002-0.010 g.L(-1). The content of total polyphenols in the leaves of Jatropha curcas. L was approximately 6.74% with RSD 0.75%. The sample solution was stable during 10-90 min with RSD 0.28%. The precision RSD was 0.23% and the average recovery 99.85% (n=5).
Conclusion:
This method is simple, fast and reproducible.
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