The isolation of piperine from Piper nigrum L.
Piperine crystals isolated from Piper nigrum L. (Fam. Piperaceae) were light yellow, monoclinic crystals melting at 130-131°C. Treatment of piperine with I2 in KI solution yielded steel-blye neeles of piperine periodide. The functional group pipridine and methylene dioxybenzene were found to be pres...
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