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Effect of Hydrolysis on the Yield of Hederagenin and High-Performance Thin-Layer Chromatography Densitometric Quantification of Hederagenin in Fruit Pericarp of Sapindus spp.

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Fruit pericarp of Sapindus species are reported to contain glycosides with hederagenin as an aglycone. To free the aglycone from the glycosides, they need to be hydrolyzed, and the commonly used method is hydrolysis with either hydrochloric or sulfuric acid. In the present work, we studied the effect of hydrolysis on the yield of hederagenin from the fruit pericarp of 3 species of Sapindus, viz., S. mukorossi, S. laurifolius, and S. emarginatus. A high-performance thin-layer chromatography densitometric method for the quantification of hederagenin was developed and validated. It involved automated application of samples as bands onto silica gel 60F254 plates, development with tolueneethyl acetateformic acid (7 3 5, v/v/v) mobile phase, detection with anisaldehydesulfuric acid reagent, and scanning at 595 nm. The yield of hederagenin ranged from 0.035 to 1.29% (w/w) with different methods of hydrolysis. Hydrolysis with 3.5 M aqueous sulfuric acid under reflux for 6 h gave the maximum yield of hederagenin in all 3 species, with the highest amount in S. emarginatus (1.29%, w/w).
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Document Type: Research Article

Affiliations: B.V. Patel Pharmaceutical Education and Research Development Center, Pharmacognosy and Phytochemistry Department, Thaltej, Ahemdabad-380 054, Gujarat, India.

Publication date: 2008-09-01

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  • The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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