Volatile Constituents ofPsidium pohlianumBerg, andPsidium guyanensisPers.

Abstract
The chemical composition of two wild Psidium species (Psidium pohlianum Berg, and P. guyanensis Pers.) collected in the National Park of Araripe, Crato-CE, Northeast of Brazil, are described and compared. Besides 1,8-cineole as the major constituent (40.5–60.3%), α-pinene, β-eudesmol and γ-eudesmol were found to be common compounds in both species. β-Pinene, elemol and spathulenol were found only in P. guyanensis, whereas p-cymene and α-terpinyl acetate were identified only in P. pohlianum.

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