Analysis and discrimination of the chemotypes of Lippia graveolens H.B.K. of guatemala by solid phase microextraction, GC-MS and multivariate analysis

Química Nova

Mérida Reyes, Max¹  Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil¹  Pérez Sabino, Juan Francisco¹  Universidad de San Carlos de Guatemala, Guatemala¹  Silva, Antonio Jorge Ribeiro da¹  Farfán Barrera, Christian Daniel¹ 

关键词: chemotype;    Lippia graveolens HBK;    SPME.;   

DOI  :  10.1590/S0100-40422012000100018

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

SPME-GC-MS, PCA and HCA multivariate techniques were used in order to evaluate their applicability to discriminate the three chemotypes (thymol, carvacrol and mixed) described for L. graveolens of Guatemala. The leaves of L. graveolens are used for treatment of colds, bronchitis, and as seasoning for food preparations, yielding essential oil up to 4.34 %. Leaves of 35 individuals from eight populations, and eight composite samples were analyzed using a DVB/Carboxen/PDMS fiber and GC-MS. PCA and HCA were carried out using eight markers (p-cymene, cis-sabinene hydrate, linalool, terpinen-4-ol, thymol, carvacrol, (E)-caryophyllene and caryophyllene oxide). The three chemotypes of L. graveolens were satisfactorily discriminated.

【 授权许可】

Unknown