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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


TORRES, Raimundo Nonato Soares; LOPES, José Arimatéia Dantas; MOITA NETO, José Machado  and  CITO, Antônia Maria das Graças Lopes. The volatile constituents of propolis from Piaui. Quím. Nova [online]. 2008, vol.31, n.3, pp.479-485. ISSN 0100-4042.

The essential oils of five samples obtained in different regions of the state of Piaui were analyzed by GC-MS. Ninety-one volatile constituents were tentatively identified and eight were positively identified. The principal components obtained from each sample were: 1,8-cineole, exo-fenchol, terpin-4-ol and fenchone (Teresina), a-pinene, caryophyllene oxide, b-pinene and a-copaene (Pio IX), (E)-caryophyllene, a-copaene, a-pinene, caryophyllene oxide and d-cadinene (Campo Maior), (E)-caryophyllene, a-gurjunene and b-selinene (Pedro II) and (E)-caryophyllene, a-gurjunene, d-cadinene and a-copaene (Lagoa de Sao Francisco). The five samples presented differences in the chemical composition of volatile fractions. The studies pointed out the need of characterizing propolis from Piaui by geographic regions and by seasons (drought and rainy periods).

Keywords : propolis; volatile compounds; Piaui.

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