Evaluation of pequi (Caryocar Brasiliense Camb.) aqueous extract quality processed by membranes

Autor(es)

Machado, Mariana T. C. ^[1] ; Mello, Beatriz C. B. S. ^[1] ; Hubinger, Miriam D. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, Dept Food Engn, BR-13083862 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FOOD AND BIOPRODUCTS PROCESSING; v. 95, p. 304-312, JUL 2015.
• Citações Web of Science: 11

Resumo

Pequi (Caryocar Brasiliense Camb.) is a typical fruit from Brazilian Cerrado, rich in antioxidant compounds, such as carotenoids and phenolic substances. Membrane processes allow concentrating extracts at low temperatures, preserving its functional properties. This work reports the results on the carotenoids and polyphenols concentration from pequi aqueous extract by ultrafiltration and nanofiltration processes, in order to develop a natural product rich in biologically active compounds suitable for functional applications. Experimental assays were performed in a dead-end stirred cell and membrane performance was evaluated in terms of permeate flux and permeate and retentate composition in relation to carotenoids and, phenolic substances content as well as antioxidant capacity. The ultrafiltration and the two different nanofiltration membranes presented rejection coefficients around 98%, 100% and 100% of the carotenoids and 65%, 94% and 97% of phenolic compounds, respectively. Thus, the nanofiltration showed a better performance to recovery the antioxidants compounds of pequi aqueous extract. (C) 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 09/50593-2 - Concentração de extratos aquosos de própolis por nanofiltração
• Beneficiário: Miriam Dupas Hubinger
• Modalidade de apoio: Auxílio à Pesquisa - Regular