Abstract

The knowledge of purification process is unique since it deals with various physical and chemical changes in the inherent toxic properties during the process and it renders a strong support in the art of medicine preparation in Siddha system of medicine. Semecarpus anacardium L. is listed under Schedule e (1) drugs and purification is mandatory before its administration in medicine preparation. The bioactive compounds present in the plant like alkaloids, terpenoids, flavonoids, saponins, glycosides, steroids enhance the medical efficacy and defense mechanisms of the plant. Hence an attempt has been made to reveal the chemical change, occurring during the purification process in Siddha system of medicine by evaluating the phytochemicals and anacardic acid which is responsible for forming blisters and dermatitis. Five common methods were used to purify the Semecarpus anacardium nuts as per the Siddha classical texts. The quantification of phytochemicals and anacardic acid has been done in unpurified, intermediate and purified samples. Significant changes were observed in phytochemicals and anacardic acid quantity in unpurified and purified samples. The major reduction of anacardic acid from 5.62 % in S1 to below detectable limit (BDL) in S2, S3, S4, 0.24% in S5 and 3.32% in S6. There is mild to moderate change in the phytochemicals which will support the efficacy of the drug. With the results of phytochemicals, though all the purification methods have been evidenced to reduce the toxic nature, among the above five, the process II may be recommended for further research and medicine preparation.

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