Chiral analysis of monoterpenes in volatile oils from propolis

• EUCLÉSIO SIMIONATTO ^[2] ; JANAINA T FACCO ^[2] ; ADEMIR F MOREL ^[1] ; SANDRO R GIACOMELLI ^[3] ; CARLOS E. B LINARES ^[3]
  1. [1] Universidade Federal de Santa Maria

     Universidade Federal de Santa Maria

     Brasil

     
  2. [2] Universidade Estadual de Mato Grosso do Sul Programa de Pós-Graduação em Recursos Naturais
  3. [3] Universidade Regional Integrada

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• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 57, Nº. 3, 2012, págs. 1240-1243
• Idioma: inglés
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  • The essential oils obtained by hydrodistillation from samples of propolis manufactured in three regions of Rio Grande do Sul State at Brazil, were analyzed through CG, CG-MS and chiral phase gas chromatography (CPGC). These analyses display the presence of samples with elevated essential oil purport, when compared with plants. The yields obtained were until 3.8%. The samples exhibited similar composition, with predominance of the monoterpenes α-pinene (5763%), β-pinene (12.5-30.8%) and limonene (1.5-11.2%). In chiral analysis ofthese constituents were observed modifications in the enantiomeric excess of isomers of α-pinene and limonene in relation with source location of the sample, already in the chiral analysis of β-pinene were detected only elevated excess of the enantiomer with the (-) configuration. The antimicrobial activity of the crude essential oil was assayed against five bacteria. The best result was obtained against Staphylococcus aureus.