Chemodiversity of Essential Oils in Piper L. (Piperaceae) Species from Marambaia Island, Rio de Janeiro-RJ, Brazil

This study aimed to determine the pattern of chemodiversity from the chemical composition of the leaf essential oil (EO) of ten species and two varieties of Piper (Piper amalago L.; P. amplum Kunth; P. anisum (Spreng.) Angely; P. arboreum Aubl. var. arboreum; P. arboreum var. hirtelum Yunck.; P. diospyrifolium Kunth; P. divaricatum G. Mey.; P. gaudichaudianum Kunth; P. lepturum (Kunth) C.DC. var. lepturum; P. lepturum var. angustifolium (C.DC.) Yunck.; P. mollicomum Kunth and P. vicosanum Yunck.) collected in the Marambaia Island, Rio de Janeiro (Brazil). The main compounds identified in the EO were Linalool, Guaiol, 1-Butyl-3,4-methylenedioxybenzene, iso-Leptospermone, alpha-Eudesmol, trans-Nerolidol, Germacrene D, beta-Elemene, 7-epi-alpha-Selinene, 1,8-Cineole, alpha-Eudesmol, alpha-Copaene, trans-gamma-Bisabolene, Bicyclogermacrene and beta-Bisabolol. In the chemometric analysis performed, it was possible to find correlations between the taxonomic characteristics of the genus Piper and the chemical composition of EO. In addition to registering trans-Caryophyllene as chemodiversity standard for this genus in this region. It is also the first study to compare the chemical composition of Piper arboreum Aubl. var. arboreum and Piper arboreum var. hirtelum Yunck.