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The volatile constituents of propolis from Piaui

机译：飘飘蜂胶的挥发性成分

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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).
机译：通过GC-MS分析了在Piaui州不同地区获得的五个样品的精油。初步确定了九十一种挥发性成分，并确定了八种挥发性成分。从每个样品中获得的主要成分是：1,8-桉树脑，外苯酚，萜品-4-醇和Fenchone（Teresina），α-pine烯，石竹烯氧化物，β-pine烯和α-古柏烯（Pio IX），（ E）-石竹烯，α-古柏烯，α-pine烯，氧化石竹烯和d-卡丹烯（Campo Maior），（E）-石竹烯，α-古丁烯和b-selinene（Pedro II）和（E）-石竹烯， Gurjunene，d-cadinene和a-copaene（拉哥·圣弗朗西斯科）。这五个样品显示出挥发性馏分的化学组成不同。研究指出，有必要按地理区域和季节（干旱和雨季）对皮奥伊蜂胶进行表征。

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