Table 1.

Estimated amounts of PIP in different plant parts.

Sources	Plant Parts	Estimated Amount (%)
Piper nigrum [2]	Fruit	1.7–7.4
Piper longum [3]	Spike and root	5.9
	Fruit	0.03
Piper chaba [3,4]	Fruit	0.95–1.32
Piper guineense [5]	Fruit	0.23–1.1
Piper sarmentosum [6]	Root	0.20
	Stem	1.59
	Leaf	0.104
	Fruit	2.75

Estimated amounts (%) were calculated on a dry wet basis.