Total phenolic content and free radical scavenging activities of methanolic extract powders of tropical fruit residues

Total phenolic content and free radical scavenging activities of methanolic extract powders of tropical fruit residues

Author Oliveira, Alane Cabral de Google Scholar
Valentim, Iara Barros Google Scholar
Silva, Cicero Alexandre Google Scholar
Bechara, Etelvino Jose Henriques Autor UNIFESP Google Scholar
Barros, Marcelo Paes de Google Scholar
Mano, Camila Marinho Autor UNIFESP Google Scholar
Goulart, Marilia Oliveira Fonseca Google Scholar
Institution Univ Fed Alagoas
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Univ Cruzeiro Sul
Abstract Methanolic extract powders of acerola, passion fruit and pineapple industrial residues, including pulp, seeds and peel, altogether (except for acerola) devoid of seeds, were screened for antioxidant capacity. the total phenolic contents (TPCs) of the extract powders were compared with their radical-scavenging activities (RSA) against both DPPH(center dot) and superoxide anion (O(2)(center dot-)) radicals, and their protective effect against liposome peroxidation, triggered by peroxyl radical. Lipid peroxidation was followed by the fluorescence decay of the probe, 4,4-difluoro-5-(4-phenyl-1,3-butadienyl)-4-bora-3a,4a-diaza-s-indacene-3-undecanoic acid (C(11)-BODIPY(581/591)). the TPCs of acerola, passion fruit and pineapple extract powders were (94.6 +/- 7.4); (41.2 +/- 4.2) and (9.1 +/- 1.3) mg of gallic acid equivalents g(-1) of dry extract, respectively. Acerola showed the best RSA-DPPH(center dot) scores, whereas passion fruit was more protective on the RSA-O(2)(center dot-) system. Together with the protective effects against lipid peroxidation (rate of BODIPY decay) which, were similar for acerola and passion fruit extracts, these data suggest that the methanolic extracts of acerola and passion fruit residues may be useful as antioxidant supplements, particularly the acerola extract, due to its high phenolic content. (C) 2008 Elsevier B.V. All rights reserved
Keywords Total phenolic content
Free radical scavenging activity
Antioxidant
BODIPY
Acerola
Passion fruit
Pineapple
Language English
Sponsor Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Milenio Redoxoma
FAPEAL
BNB (Northeast Bank of Brazil)
Grant number CNPq: 151874/2007-7
Date 2009-07-15
Published in Food Chemistry. Oxford: Elsevier B.V., v. 115, n. 2, p. 469-475, 2009.
ISSN 0308-8146 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 469-475
Origin http://dx.doi.org/10.1016/j.foodchem.2008.12.045
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000264687500012
URI http://repositorio.unifesp.br/handle/11600/31674

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