Determination of thymol and carvacrol in plasma and milk of dairy cows using solid-phase microextraction

Journal of the Brazilian Chemical Society

Contini, Silvia Helena T.¹  Fiori, Giovana Maria L.¹  Bonato, Pierina Sueli¹  Pereira, Ana Maria S.¹  Pereira, Maria Paula Marques¹  University of Ribeirão Preto, Ribeirão Preto, Brazil¹  University of São Paulo, Ribeirão Preto, Brazil¹ 

关键词: carvacrol;    GC-MS;    cow milk and plasma;    SPME;    thymol;   

DOI  :  10.5935/0103-5053.20130109

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

A method for determination of thymol and carvacrol in milk and plasma of dairy cows was developed by gas chromatography-mass spectrometry (GC-MS) and headspace solid-phase microextraction (HS-SPME). The limits of quantification were set at 0.5 and 2.0 ng mL-1 for both analytes in plasma and milk, respectively, with appropriate precision and accuracy. For quantification of thymol, the results obtained with the established methodology were superior compared with others reported in the literature, achieving lower limit of quantification. Concerning to carvacrol, this is the first methodology described in the literature for the analysis of this compound in plasma and milk of cows. The analytical methodology enabled the identification and quantification of thymol and carvacrol in the plasma and milk of cows after administration of an intra-mammary phytoformulation of veterinary use containing plant essential oils rich in thymol and carvacrol.

【 授权许可】

Unknown