Abstract
Embelin is a unique chemical compound found in nature, composed of quinone moiety resembling Coq10 (Ubiquinones), having ketone and hydroxy groups with an aliphatic chain. An Optimum solvent for extracting Embelin from Embelia schimperi and its simultaneous determination of the content of Embelin in the extract has been performed using UV-VIS spectrometry. The identification of Embelin spot obtained from hot ethyl acetate extract of the seed is confirmed by Nuclear Magnetic Spectroscopy (NMR). A plot of peak absorbance versus concentration of Embelin was found to be linear over the range of 3-12 μg/ml. The limit of detection was 0.11μg/ml and the limit of quantitation was 0.37 μg/ml. Extraction conditions were also optimized for the best possible extraction of Embelin from the fruits of Embelia schimperi in different solvent polarity like n-hexane, carbon tetrachloride, diethyl ether, chloroform, ethyl acetate, propanol and ethanol. The determination of Embelin in various solvent extract exhibited a mean content of 0.66-5.79 % w/w. Carbon tetrachloride and ethyl acetate was found to be best for the highest possible recovery of the analyte, Embelin. The developed UV method was validated in terms of precision, accuracy, stability, LOD and LOQ Keywords: Embelia schimperi, Embelin, spectrometry, extraction
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