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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ultrasound assisted extraction and nanofiltration of phenolic compounds from artichoke solid wastes

Full text
Author(s):
Rabelo, Renata S. [1] ; Machado, Mariana T. C. [1] ; Martinez, Julian [1] ; Hubinger, Miriam D. [1]
Total Authors: 4
Affiliation:
[1] Univ Campinas UNICAMP, Sch Food Engn, Dept Food Engn, 80 Monteiro Lobato St, POB 6121, BR-13083862 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Food Engineering; v. 178, p. 170-180, JUN 2016.
Web of Science Citations: 14
Abstract

Artichoke wastes from the canning industry are rich in phenolic compounds, which can be used as food additives. This study aims to evaluate the potential of sequential process based on the use of ultrasound extraction and membrane technology for phenolic recovery. In the extraction step, solvent composition and ultrasound power were evaluated to understand their impact on phenolic content and antioxidant capacity. The highest yields were observed for extracts with higher ethanol content (50 and 75%). Therefore, these extracts were selected for concentration by nanofiltration in a tangential module, using differents membranes (NF270, DK and DL). The flux decrease and the phenolic retention were evaluated. Hermia's models and membrane surface characterization were used to investigate the fouling. The highest flux was observed for extracts with 50% of ethanol with a retention of chlorogenic acid higher than 95%. DK membrane showed to be less susceptible to fouling, although the cake formation occurred in all evaluated membranes. The most suitable process condition to obtain the highest phenolic yields was extraction with 50% ethanol and an ultrasound power of 240 W and extracts nanofiltration using DK membrane. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 09/54137-1 - Acquisition of a particle size/distribution analyzer, a zeta potential measurement system, a spray dryer, and an ultra-high-pressure liquid chromatograph/mass spectrometer
Grantee:Miriam Dupas Hubinger
Support Opportunities: Multi-user Equipment Program
FAPESP's process: 09/50593-2 - Concentração de extratos aquosos de própolis por nanofiltração
Grantee:Miriam Dupas Hubinger
Support Opportunities: Regular Research Grants