PHARMACOGNOSTICAL STUDIES ON THE ROOTS OF PIPER NIGRUM L. III: DETERMINATION OF ESSENTIAL OIL AND PIPERINE
A total yield of 0.39% essential oil was gained from the root by distillation, and contents of trans- and ciscaryophyllene, -3-canene, humulene, limonene, pinene in the oil were 51.2, 6.76, 6.00, 3.76, 2.97, 1.35% respectively. A total yield of 0.79% piperine in the, root was determined by RP-HPLC: separately, 0.99% in the thin root (0.5 cm in diam.) and 0.14% in the thick root (3 cm in diam.); 0.44% in the cortex and 0.29% in the stele of a root in diam. of 2 cm were also determined. This is the first report about above chemicals in the root.
Hu, S., Ao, P. and Liu, D. (1996). PHARMACOGNOSTICAL STUDIES ON THE ROOTS OF PIPER NIGRUM L. III: DETERMINATION OF ESSENTIAL OIL AND PIPERINE. Acta Hortic. 426, 179-182
Pepper roots, Piper nigrum L., essential oil, piperine, HPLC