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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.)

Surfactant Mediated Extraction of Antioxidants from Syzygium aromaticum

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Autor(es):
Cortes-Rojas, D. F. [1] ; Souza, C. R. F. [1] ; Oliveira, W. P. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Sch Pharmaceut Sci Ribeirao Preto, BR-14040903 Ribeirao Preto, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: SEPARATION SCIENCE AND TECHNOLOGY; v. 50, n. 2, p. 207-213, JAN 22 2015.
Citações Web of Science: 5
Resumo

In the present study surfactant mediated extraction has been investigated for the extraction of antioxidants from clove flower buds (Syzygium aromaticum). The advantage of this technique is the replacement of organic solvents or other toxic substances by surfactants that could be part of a formulation. The influence of the Hydrophilic Lipophylic Balance (HLB) on extraction was examined in the range of 4.3 to 15 by the mixture of two commonly used surfactants in pharmaceutical and food applications (Tween 80 and Span 80). The effect of the surfactant concentration (2, 5, and 10%) was also evaluated. Results showed that higher HLB values improved eugenol and polyphenols extraction, which could be correlated with the in vitro antioxidant activity. Surfactant concentration of 5% (w/w) showed to be more effective than 2% and there were no significant differences between the results obtained at concentrations of 5 and 10%. The effect of the pH was also investigated on Tween 80 solutions and results showed that increases on the pH value improved the eugenol extraction. (AU)

Processo FAPESP: 12/09890-6 - Encapsulação de compostos bioativos de Syzygium aromaticum em carreadores lipídicos sólidos
Beneficiário:Diego Francisco Cortés-Rojas
Modalidade de apoio: Bolsas no Brasil - Doutorado
Processo FAPESP: 12/03427-2 - Microencapsulação e nanoencapsulação de ativos naturais empregando tecnologias de secagem
Beneficiário:Cláudia Regina Fernandes de Souza
Modalidade de apoio: Bolsas no Brasil - Jovens Pesquisadores
Processo FAPESP: 11/10333-1 - Microencapsulação e nanoencapsulação de ativos naturais empregando tecnologias de secagem
Beneficiário:Cláudia Regina Fernandes de Souza
Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores