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Type: Artigo
Title: Efficiency of extraction of antioxidant compounds in by-product from red guava processing
Author: Silva, Maira Oliveira
Pastore, Gláucia Maria
Abstract: Studies that investigate efficient methods for extraction of antioxidant compounds in by-products of fruits can contribute to their appreciation in human food. This study aimed comparing two methods for phenolic extraction - single extraction (single solvent) and sequential (different solvents) in by-product from Paluma guava processing, evaluating the influence of the extracts on the stabilization of radicals by DPPH and ORAC assays. Sequential extraction showed higher efficiency in obtaining phenolic (2.60 > 0.56 mg GAE g-1), allowing the extraction of free phenolic, conjugated and fat-soluble, as well as determining the highest antioxidant capacity in these extracts. Acetone was characterized to be the responsible solvent for higher extraction of phenolic in the sequential extraction, being necessary 0.90 mg mL-1 of extract to reduce 50% the action of DPPH• radicals. Thus, sequential extraction of phenolic is a potential method for better use of antioxidant compounds in the guava processing by-product
Subject: Compostos fenólicos
Country: Brasil
Editor: Universidade Tecnológica Federal do Paraná
Rights: Aberto
Identifier DOI: 10.3895/rebrapa.v8n4.5015
Date Issue: 2017
Appears in Collections:FEA - Artigos e Outros Documentos

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