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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

The Seasonal Variation of the Chemical Composition of Essential Oils from Porcelia macrocarpa RE Fries (Annonaceae) and Their Antimicrobial Activity

Texto completo
Autor(es):
da Silva, Erica Biolcati P. [1] ; Soares, Marisi G. [2] ; Mariane, Bruna [1] ; Vallim, Marcelo A. [1] ; Pascon, Renata C. [1] ; Sartorelli, Patricia [1] ; Lago, Joao Henrique G. [1]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, BR-09972270 Diadema, SP - Brazil
[2] Univ Fed Alfenas, Inst Quim, BR-37130000 Alfenas, MG - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Molecules; v. 18, n. 11, p. 13574-13587, NOV 2013.
Citações Web of Science: 3
Resumo

This study investigates the impact of seasonal variation on the chemical composition of essential oils from the leaves of Porcelia macrocarpa (Annonaceae) obtained over the course of one year (January-December 2011) and the chemical composition of the essential oils obtained from the ripe fruits of the same plant. Furthermore, the essential oils of the leaves were investigated with respect to their antimicrobial activity. The essential oils of the leaves contain a mixture of monoterpenes, one diterpene and several sesquiterpenes. The main components were identified as the sesquiterpenes germacrene D (29%-50%) and bicyclogermacrene (24%-37%). No significant variation was observed for the composition of the essential oil of the leaves over the course of the year, except for the month of November, when the ripe fruit were collected. In this month, substantially decreased concentrations of germacrene D (28.8 +/- 0.8%) and bicyclogermacrene (23.9 +/- 0.6%) were measured and the emergence of spathulenol (10.4 +/- 0.2%) was observed. The essential oils extracted from the ripe fruit revealed the presence of a variety of monoterpenes, sesquiterpenes and hydrocarbons. The main constituents of these oils were neryl (8.8 +/- 0.2%) and geranyl (27.3 +/- 0.7%) formates, gamma-muurolene (10.3 +/- 0.9%) and dendrolasin (8.23 +/- 0.06%). The antimicrobial activity of the essential oil obtained from the leaves of P. macrocarpa towards a range of bacterial and yeast strains was examined. In order to determine the minimum inhibitory concentration (MIC) of essential oils obtained from the January collection of the leaves, broth microdilution assays were carried out, which showed a significant antimicrobial activity towards Cryptococcus neoformans serotypes A and D as well as C. gattii serotypes B and C. (AU)

Processo FAPESP: 11/51739-0 - Uso sustentável da biodiversidade de áreas remanescentes da Mata Atlântica do Estado de São Paulo: avaliação, isolamento e caracterização molecular de metabólitos secundários bioativos em espécies vegetais
Beneficiário:João Henrique Ghilardi Lago
Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular