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Food Chem ; 422: 136178, 2023 Oct 01.
Article in English | MEDLINE | ID: mdl-37119595

ABSTRACT

This study aimed to investigate the suitability of the application of high-intensity ultrasounds (HIUS) to improve the acid induced gelation of mixed protein systems formed by casein micelles (CMs) and pea. The protein suspensions were prepared in different protein ratios CMs: pea (100:0, 80:20, 50:50, 20:80, 0:100) at 8% (w/w) total protein concentration. In the suspensions, the ultrasound treatment produced an increase in solubility, surface hydrophobicity, and a decrease in the samples' viscosity, with more remarkable differences in protein blends in which pea protein was the major component. However, the replacement of 20% of CMs for pea proteins highly affected the gel elasticity. Hence, the creation of smaller and more hydrophobic building blocks before acidification due to the HIUS treatment increased the elasticity of the gels up to 10 times. Therefore, high-intensity ultrasounds are a suitable green technique to increase the gelling properties of CMs: pea systems.


Subject(s)
Caseins , Milk Proteins , Animals , Caseins/chemistry , Milk Proteins/chemistry , Milk/chemistry , Pisum sativum , Suspensions , Gels/chemistry , Micelles , Hydrogen-Ion Concentration
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