Structural and foaming properties of whey and soy protein isolates in mixed systems before and after heat treatment
| Autor: | Alane Cangani Alves, Federico Casanova, Guilherme M. Tavares, Lara Martha |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Hot Temperature General Chemical Engineering 01 natural sciences Industrial and Manufacturing Engineering Whey protein isolate Protein Aggregates 0404 agricultural biotechnology Mixed systems Whey 010608 biotechnology Animals Food science Soy protein Plant Proteins biology Animal Sources Chemistry Water 04 agricultural and veterinary sciences 040401 food science Whey Proteins Solubility Co aggregation Food products Soybean Proteins biology.protein Food Science |
| Zdroj: | Food Science and Technology International. 28:545-553 |
| ISSN: | 1532-1738 1082-0132 |
| DOI: | 10.1177/10820132211031756 |
| Popis: | The partial replacement of proteins from animal sources by plant proteins in formulated food products has been proposed as useful to improve sustainability aspects of the products without dramatically changing their techno-functional properties. Although several research groups have published on the gelling properties of mixed systems containing whey and soy protein isolates (WPI and SPI), their foaming properties are much less described. In this context, the main objective of this paper was to evaluate the structural and foaming properties of samples containing different mass ratios of WPI:SPI (100:0, 75:25, 50:50, 25:75 and 0:100) before and after heat treatment. The samples were evaluated according to their solubility, foaming capacity (FC), foam microstructure and foam stability (FS). Before heat treatment, mixing SPI to WPI did not affect the solubility of whey proteins, but, after heat treatment, insoluble co-aggregates were formed. Similar FC was measured for all samples despite their WPI:SPI ratio and the applied heat treatment. The partial replacement of WPI by SPI changed the microstructure of the foams and had an antagonistic effect on the FS of the samples, due to the negative effect of insoluble soy protein aggregates and/or insoluble co-aggregates on the reinforcement of the air-water interfacial film. |
| Databáze: | OpenAIRE |
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