Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Phase behavior and process parameters effect on grape seed extract encapsulation by SEDS technique

Full text
Author(s):
Boschetto, Daiane L. [1] ; Dalmolin, Irede [2] ; de Cesaro, Alana M. [3] ; Rigo, Aline A. [3] ; Ferreira, Sandra R. S. [1] ; Meireles, M. Angela A. [2] ; Batista, Eduardo A. C. [2] ; Vladimir Oliveira, J. [1]
Total Authors: 8
Affiliation:
[1] Univ Fed Santa Catarina, Dept Chem & Food Engn, BR-88040900 Florianopolis, SC - Brazil
[2] Univ Estadual Campinas, Sch Food Engn, Dept Food Engn, BR-13083862 Campinas, SP - Brazil
[3] Univ Reg Integrada Alto Uruguai & Missoes, Dept Food Engn, BR-99700000 Erechim, RS - Brazil
Total Affiliations: 3
Document type: Journal article
Source: INDUSTRIAL CROPS AND PRODUCTS; v. 50, p. 352-360, OCT 2013.
Web of Science Citations: 18
Abstract

Grape seed extract (GSE) was encapsulated in biocompatible poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) using the solution enhanced dispersion by supercritical fluids (SEDS) technique. In order to help selecting the appropriate operating conditions for the encapsulation mechanism, the fluid phase behavior of pseudo-ternary carbon dioxide (CO2) + dichloromethane (DCM)+GSE systems was studied employing a static synthetic method. The investigated SEDS operating parameters were in the following range: pressure (8-12 MPa), temperature (308-318K), GSE to PHBV mass ratio (1:1-1:3), with concentrations of organic solution formed by GSE (6.67-20.00 kg m(-3)) in DCM, and fixed PHBV 20.00 kg m(-3) in DCM. The organic solution flow rate was fixed at 1.67 x 10(-8) m(3) s(-1) and the antisolvent flow rate at 3.33 x 10(-7) m(3) s(-1). The effect of operating parameters on particle size, particle morphology and encapsulation efficiency was checked. The best result was obtained at 8 MPa, 308K, GSE to PHBV mass ratio of 1:1, with concentration of GSE and PHBV, both of 20.00 kg m(-3), leading to spherical particles with the smallest size of similar to 0.70 mu m and encapsulation efficiency of 66.01%. SEM-EDS micrographs showed that, besides spherical particles, agglomerated particles were observed at temperatures higher than 308 K, which might be due to a more favorable extract re-dissolution at higher temperatures. (C) 2013 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 08/56258-8 - Phase equilibrium and purification processes in the production of biofuels and biocompounds
Grantee:Antonio José de Almeida Meirelles
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Thematic Grants