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Type: Artigo
Title: Recovery of anthocyanins from residues of rubus fruticosus, vaccinium myrtillus and eugenia brasiliensis by ultrasound assisted extraction, pressurized liquid extraction and their combination
Author: Machado, Ana Paula Da Fonseca
Pereira, Ana Luiza Duarte
Barbero, Gerardo Fernández
Martínez, Julian
Abstract: This work investigated the extraction efficiency of polyphenols (anthocyanins) from blackberry, blueberry and grumixama residues using combined ultrasonic assisted extraction (UAE) and pressurized liquid extraction (PLE) (UAE + PLE). The performance of UAE + PLE was compared to those achieved by the isolated PLE and UAE methods and conventional Soxhlet extraction. The effects of the extraction methods and solvents (acidified water pH 2.0, ethanol + water 50% v/v and ethanol + water 70% ethanol v/v) on total phenolics content, anthocyanin composition and antioxidant capacity of extracts were investigated by a full factorial design. The extraction efficiency for total phenolics and antioxidant capacity in decreasing order was: UAE + PLE > PLE ≈ Soxhlet > UAE, and for anthocyanins it was: Soxhlet ≈ UAE > UAE + PLE > PLE, using hydroethanolic mixtures as solvents. Extractions with acidified water and ultrasound were not effective to recover phenolics. Two, four and fourteen anthocyanins were identified in the extracts from grumixama, blackberry and blueberry, respectively
Subject: Mirtilo
Country: Países Baixos
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.foodchem.2017.03.060
Date Issue: 2017
Appears in Collections:FEA - Artigos e Outros Documentos

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