ICEN - Instituto de Ciências Exatas e Naturais

URI Permanente desta comunidadehttps://repositorio.ufpa.br/handle/2011/2435

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Acesso aberto (Open Access)
HS-SPME as an efficient tool for discriminating chemotypes of Lippia Alba(Mill.) N. E. Brown
(Universidade Federal do Pará, 2017-01) SILVA, Aiêrta Cristina Carrá da; BARBOSA, Francisco Geraldo; MAFEZOLI, Jair; OLIVEIRA, Maria da Conceição Ferreira de; OLIVEIRA, Terezinha Ferreira de
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.
Acesso aberto (Open Access)
Triterpenoides, fenólicos e efeito fitotóxico das folhas de Eugenia flavescens DC (Myrtaceae)
(Universidade Federal do Pará, 2017-04) CANTANHEDE FILHO, Antonio José; SANTOS, Lourivaldo da Silva; GUILHON, Giselle Maria Skelding Pinheiro; ZOGHBI, Maria das Graças Bichara; PORT'S, Pollyane da Silva

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