High internal phase emulsions stabilized solely by sonicated quinoa protein isolate at various pH values and concentrations.
Food Chem
; 378: 132011, 2022 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-35042113
ABSTRACT
In this study, stable high internal phase emulsions (HIPEs) constructed solely by sonicated quinoa protein isolate (QPI) at various pH values and protein concentrations (c) were constructed, and differences of HIPE microstructures at these conditions were discussed. HIPEs stabilized by QPI at pH 7.0, 9.0 possessed smaller droplet size (14-24 µm), smoother appearance, and higher physical stability which were caused by polyhedral framework microstructure. However, at acidic conditions, QPI aggregates filled in the gaps between droplets (30-52 µm) instead of adsorbing to oil-water interface, which decreased the stability. The solid-like viscoelasticity of HIPEs were enhanced when the c increased while the increment of pH value had the significant opposite effect (decreased from about G' 1000 Pa, Gâ³ 280 Pa to G' 350 Pa, Gâ³ 50 Pa) due to the microstructure difference. This study broadens the commercial applications of quinoa protein in novel food products like fat substitutes.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Chenopodium quinoa
Idioma:
En
Revista:
Food Chem
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China