Please use this identifier to cite or link to this item: http://repositorio.ufpa.br/jspui/handle/2011/6973
metadata.dc.type: Artigo de Periódico
Issue Date: 2007
metadata.dc.creator: SOUZA, Jesus Nazareno Silva de
SILVA, Evaldo Martins da
SILVA, Milton Nascimento da
ARRUDA, Mara Silvia Pinheiro
LARONDELLE, Yvan
ROGEZ, Hervé Louis Ghislain
Title: Identification and antioxidant activity of several flavonoids of Inga edulis leaves
Citation: SOUZA, Jesus Nazareno Silva de et al. Identification and antioxidant activity of several flavonoids of Inga edulis leaves. Journal of the Brazilian Chemical Society, São Paulo, v. 18, n. 6, p. 1276-1280, 2007. Disponível em: <http://www.scielo.br/pdf/jbchs/v18n6/a25v18n6.pdf>. Acesso em: 6 nov. 2015. <http://dx.doi.org/10.1590/S0103-50532007000600025>.
metadata.dc.description.resumo: Um extrato metanol-água das folhas de Inga edulis foi fracionado para identificar os compostos polifenólicos. Os compostos identificados foram o acido gálico, a catequina, a epicatequina, a miricetina-3-ramnopiranosídeo, a quercetina-3-glucopiranosídeo e a quercetina-3-ramnopiranosídeo. A capacidade antioxidante do extrato e dos polifenóis puros foi medida pelo teste ORAC e comparada com o teor em fenólicos totais (TP). O extrato bruto seco apresentou valores de ORAC (11.16 mmol TE per g) e TP (496.5 mg GAE per g) muito altos. Os compostos identificados foram responsáveis, respectivamente, por 9.53 % e 12.10 % dos valores ORAC e de TP do extrato de folhas de Inga edulis.
Abstract: A methanol-water extract of Inga edulis leaves was fractionated to identify the polyphenolic compounds. The identified compounds were gallic acid, catechin, epicatechin, myricetin-3-rhamnopyranoside, quercetin-3-glucopyranoside and quercetin-3-rhamnopyranoside. The antioxidant activity of the extract and of pure polyphenols was measured by the ORAC assay and compared with the Total Phenolic (TP) content. The dry crude extract presented very high values for ORAC (11.16 mmol TE per g) and TP (496.5 mg GAE per g). The identified compounds were responsible for 9.53 % and 12.10 % of the ORAC value and TP content of the Inga edulis leaf extract, respectively.
Keywords: Atividade antioxidante
Inga edulis
Compostos polifenólicos
Teste ORAC
ISSN: 1678-4790
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - FAQUI/ICEN

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