\n\tSummary

\n\tSesquiterpen of Crud Tangshen and Process Tangshen

\n\tPreliminary studies on chemical composition of crude and processed Vietnamese Tangshen. The study results show that: Thin layer chromatograms of crude and processed Tangshen are similar, but different in HPLC. The total acid amin contents is 1,78% and 1,30% for crude and processed Tangshen, respectively.

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