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.)

Incompatibility between sodium caseinate-locust bean gum induced by NaCl and yerba mate extract

Full text
Author(s):
Kaufmann, Karine Cristine [1] ; Czakoski, Aline [1] ; Barbin, Douglas Fernandes [1] ; da Cunha, Rosiane Lopes [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Sch Food Engn, Dept Food Engn & Technol, BR-13083862 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: International Journal of Biological Macromolecules; v. 183, p. 276-284, JUL 31 2021.
Web of Science Citations: 1
Abstract

Aqueous two-phase system (ATPS) is a technique used for the separation of biopolymers in two aqueous phases. Some combinations of biopolymers can form a water-in-water (W/W) emulsion due to steric exclusion and thermodynamic incompatibility between these biopolymers under some specific conditions. In this work, the formation of W/W emulsions composed of sodium caseinate (SCN) and locust bean gum (LBG) was evaluated, using NaCl or yerba mate extract as the driving force for the phase separation, which was described by phase's diagrams. Phase diagrams are like fingerprints of ATPS systems, which demonstrate the specific conditions to develop separate phases. Phase diagrams of the two systems show that at the same concentrations of protein and carbohydrate, the addition of NaCl or extract induced the separation of the compounds differently. Salt promotes phase separation by steric exclusion, each phase being rich in one of the polymers. Since extract may also induce other effects, such as the formation of a SCN-extract-LBG complex, migration of LBG to the SCN-rich phase was promoted, modifying the characteristics of the tie lines in the phase diagrams. However, it was feasible to separate the protein in systems containing concentrated phenolic extract, whose incorporation is relevant considering its antioxidant activity. (c) 2021 Elsevier B.V. All rights reserved. (AU)