Fruit Oil Composition of Piper chaba Hunt., P. longum L. and P. nigrum L.

Essential oil composition of the fruit oils of Piper chaba, P. longum and P. nigrum were investigated by GC and GC/MS. Unlike P. nigrum oil, P. chaba and P. longum oils were found to contain few monoterpene hydrocarbons, a moderate content of sesquiterpenes and high content of aliphatic hydrocarbons. The content of caryophyllene oxide (7.4%) was the highest in P. chaba and that of β-caryophyllene was found to be 39.7%, 10.2% and 5.2% in, P. nigrum, P. longum and P. chaba, respectively.