Identification and antioxidant activity of several flavonoids of Inga edulis leaves

Journal of the Brazilian Chemical Society

Jesus N. S. Souza²  Evaldo M. Silva²  Milton N. Da Silva¹  Mara S. P. Arruda¹  Yvan Larondelle²  Hervé Rogez¹ 

[1] ,Université catholique de Louvain Unité de Biochimie de la Nutrition

关键词: Inga edulis;    antioxidant activity;    polyphenols;    ORAC assay;   

DOI  :  10.1590/S0103-50532007000600025

来源: SciELO

【 摘 要 】

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.

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