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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.)

Assessing the potential of whey protein fibril as emulsifier

Full text
Author(s):
Mantovani, Raphaela Araujo [1] ; Furtado, Guilherme de Figueiredo [1] ; Netto, Flavia Maria [2] ; Cunha, Rosiane Lopes [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, UNICAMP, Fac Food Engn, Dept Food Engn, BR-13083862 Campinas, SP - Brazil
[2] Univ Estadual Campinas, UNICAMP, Fac Food Engn, Dept Food & Nutr, BR-13083862 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Food Engineering; v. 223, p. 99-108, APR 2018.
Web of Science Citations: 10
Abstract

The effect of pH and mechanical processes on non-heated whey protein isolate (WPI) and WPI fibril was evaluated from structural, physical and emulsifying properties. Fibril aggregation was observed increasing pH from 2 to 7 whilst mechanical processes with high energy density resulted in fibril shortening and smaller aggregates. Despite affecting fibril morphology, mechanical processes did not affect significantly the protein secondary structure conformation and interfacial tension at aqueous protein dispersion-oil interface. However, increasing pH resulted in loss of ordered secondary structure, decreased interfacial tension and surface hydrophobicity of fibril. Fibril dispersions showed shear thinning behavior but thixotropy was only observed at pH 7. Fibril-stabilized emulsions at pH 7 were more stable due to the higher viscosity and faster migration of fibrils to the interface when compared to fibrils at low pH, resulting in steric hindrance stabilization. Therefore, changes on WPI fibrils resulted in varied structural and emulsifying properties. (C) 2017 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: 11/06083-0 - Emulsification by microchannels
Grantee:Rosiane Lopes da Cunha
Support Opportunities: Regular Research Grants