Thin-Layer Chromatography-Densitometric Analysis of -Mangostin Content in Garcinia mangostana Fruit Rind Extracts
The fruit rinds of mangosteen (Garcinia mangostana Linn.) have long been used as traditional medicines for treatment of skin infections, wounds, and diarrhea. A simple thin-layer chromatography (TLC)-densitometric method has been developed for the simultaneous quantification
of -mangostin in the extracts from unripe and ripe fruit rinds of G. mangostana. It was found in the ranges of 10.48 0.83 and 16.65 0.38 (w/w) in the dried unripe and ripe fruit rinds, respectively. The method was validated for linearity, precision, accuracy, limit of detection (LOD),
and limit of quantitation (LOQ). The linearity was found over the range of 100500 ng/spot with regression coefficient 0.999. Intraday and interday precision studies showed the relative standard deviation was <2. Accuracy of the method was determined by a recovery study conducted at 3 different
levels, and the average recovery was 99.49. The LOD and LOQ were 40 and 100 ng, respectively. The proposed TLC-densitometric method was found to be simple, precise, specific, sensitive, and accurate. This method can be used for routine quality control of raw material of G. mangostana
fruit rind, extract, and its products. It also can be applied in quantifying this marker compound in other drugs.
Document Type: Research Article
Mahidol University, Department of Pharmacognosy, Faculty of Pharmacy, 447 Sri-Ayudhaya Rd, Ratchatewi, Bangkok 10400, Thailand.
Publication date: September 1, 2008
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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 The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better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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