Abstract
The essential oils from the aerial parts of leaves, fruits and flowers of Zanthoxylum rhoifolium of Southern Brazil (Rio Grande do Sul), were analysed by GC, GC/MS, and chiral phase
gas chromatography (CPGC). Forty-eight compounds were identified from the essential
oils. The major constituents of the essential oil of the leaves were germacrene D
(34 %) and bicyclogermacrene (23 %) and of the fruits, menth-2-en-1-ol (46.2 %), β-myrcene
(30.2 %), (-)-linalool (15 %) and (-)-α-terpineol (8.45 %). β-Myrcene (65 %) and menth-2-en-1-ol
(5.4 %) dominate the essential oil of the flowers. The oils of the leaves and fruits
were bioactive with antibacterial activity against Staphylococcus aureus (Gram positive), and Klebsiella pneumoniae and Salmonella setubal bacteria (Gram negative) microorganisms, while the essential oil of the flowers was
inactive.
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Prof. Dr. Ademir Farias Morel
Universidade Federal de Santa Maria
Departamento de Química
Camobi
Santa Maria RS
Brazil CEP: 97105-900
eMail: afmorel@base.ufsm.br