Chemical composition: Seeds of Perlolyrine contain perlolyrine, β-carboline, hovenoside C, D, G, G', and H, where D and G correspond. The dioscorea is jujubogenin; the fruit contains a large amount of glucose, nitrate and potassium malate; the stem and axis of the inflorescence contain glucose, fructose and sucrose. The contents of these three in the inflorescence axis were 111.14%, 4.74%, and 12.59%, respectively; root bark contained frangulanine and hovenine A, B, and scopolamine A was Des-N-methylfrangulanine; xylem containing hovenic acid.
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