Recovery of anthocyanins from residues of Rubus fruticosus, Vaccinium myrtillus and Eugenia brasiliensis by ultrasound assisted extraction, pressurized liquid extraction and their combination

Autor(es)

Da Fonseca Machado, Ana Paula ; Duarte Pereira, Ana Luiza ; Fernandez Barbero, Gerardo ; Martinez, Julian

• Tipo de documento: Artigo Científico
• Fonte: Food Chemistry; v. 231, p. 1-10, SEP 15 2017.
• Citações Web of Science: 26

Resumo

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 approximate to Soxhlet > UAE, and for anthocyanins it was: Soxhlet approximate to 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. (C) 2017 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 15/11932-7 - Integração de processos de extração a alta pressão com operações de separação para o aproveitamento de subprodutos do processamento de frutas
• Beneficiário: Julian Martínez
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/02203-6 - Construção de unidades de extração, formação de partículas e reações químicas com fluidos pressurizados
• Beneficiário: Julian Martínez
• Modalidade de apoio: Auxílio à Pesquisa - Regular