Authentication of an animal crude drug, Zaocys, by diagnostic PCR

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Abstract

A pair of diagnostic primers for distinguishing the Chinese crude drug Zaocys (Zaocys dhumandes) from its substitutes was designed based on the sequence data of the original animal of the drug and substitutes. Total DNAs were extracted from genuine crude drug and 5 of its substitutes, as well as from 12 species of original animal of the snake crude drug. Diagnostic PCRs were performed using the primers with these total DNAs as a template, annealing at 6065 °C. Positive amplifications were obtained from all DNA templates of Zaocys, whereas negative amplifications were obtained from that of others. The results indicate that Zaocys samples could be definitely distinguished from its substitutes by diagnostic PCR, and no incorrect discrimination was found under the same reaction conditions. The advantages of the method in the authentication of crude drugs are also discussed in the present paper.

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Wang, Y., Zhou, K., Xu, L., Dong, T. T. X., & Tsim, K. W. K. (2000). Authentication of an animal crude drug, Zaocys, by diagnostic PCR. Biological and Pharmaceutical Bulletin, 23(5), 585–588. https://doi.org/10.1248/bpb.23.585

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