Artigo de Periódico
HS-SPME as an efficient tool for discriminating chemotypes of Lippia Alba(Mill.) N. E. Brown
Registro en:
0100-4042
1678-7064
Autor
SILVA, Aiêrta Cristina Carrá da
BARBOSA, Francisco Geraldo
MAFEZOLI, Jair
OLIVEIRA, Maria da Conceição Ferreira de
OLIVEIRA, Terezinha Ferreira de
Institución
Resumen
Lippia alba (Mill.) N. E. Brown (Verbenaceae) is a medicinal plant for which several biological activities are reported, such as sedative, anxiolytic, anti-ulcer, antifungal, antimicrobial, antioxidant, antispasmodic, anti-nociceptive and anti-inflammatory. It is characterized by the production of essential oils which have been used to classify the plant in different chemotypes. In the Northeast region of Brazil, the presence of three chemotypes are reported: myrcene-citral (chemotype I), limonene-citral (chemotype II) and carvone-limonene (chemotype III). In this work, headspace-solid phase microextraction (HS-SPME) was used on the analysis of the volatile organic compounds (VOCs) of three chemotypes of L. alba from the Northeast region of Brazil, and compared to the essential oils of the plants extracted by hydrodistillation. Volatile compounds from each chemotype were more effectively differentiated when extracted by HS-SPME than by hydrodistillation.