Mixing whey and soy proteins: Consequences for the gel mechanical response and water holding
| Autor: | Jissy Jose, A.H. Martin, Laurice Pouvreau |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics and Physical Chemistry of Foods
Gelation General Chemical Engineering Mixing (process engineering) Ionic bonding Fraction (chemistry) FI - Functional Ingredients gel stiffness 0404 agricultural biotechnology Life Water holding Food and Nutrition Total protein Nutrition Chromatography Aggregate (composite) Chemistry coarseness 04 agricultural and veterinary sciences General Chemistry Microstructure 040401 food science soy proteins whey proteins Food products ELSS - Earth Life and Social Sciences Healthy Living Food Science |
| Zdroj: | Food Hydrocolloids 60 (2016) Food Hydrocolloids, 60, 216-224 |
| ISSN: | 0268-005X |
| DOI: | 10.1016/j.foodhyd.2016.03.031 |
| Popis: | To design food products based on mixtures of proteins from animal and plant sources, understanding of how the structural and mechanical properties of mixed protein systems can benefit from selectively mixing is essential. Heat-induced gels were prepared from mixtures of whey proteins (WP) and soy proteins (SP) at different ratios and constant total protein concentration (10 w/w %). The effect of mixing on the aggregation phenomena (light scattering), mechanical response, and microstructure (CLSM, SEM) was investigated at ionic strengths of 0.1 and 0.3 M. Having similar gelation mechanisms, whey and soy proteins formed one network with both proteins contributing to the gel properties. With an increasing fraction of SP in the mixed protein gel, gel strength and stiffness decreased and water holding increased. In addition, a decrease in gel coarseness was observed, which was most significant for 0e3 w/w % SP fraction. A similar transition was also observed in the aggregation kinetics and aggregate size in dilute solutions. |
| Databáze: | OpenAIRE |
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