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Gelling and emulsifying properties of soy protein hydrolysates in the presence of a neutral polysaccharide

Lopes-da-Silva, José A. ; Monteiro, Sónia R.

Food chemistry, 2019-10, Vol.294, p.216-223 [Periódico revisado por pares]

England: Elsevier Ltd

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  • Título:
    Gelling and emulsifying properties of soy protein hydrolysates in the presence of a neutral polysaccharide
  • Autor: Lopes-da-Silva, José A. ; Monteiro, Sónia R.
  • Assuntos: Emulsifying properties ; Emulsions - chemistry ; Galactomannans ; Gelation ; Gels - chemistry ; Hydrolysates ; Molecular Weight ; Polysaccharides - chemistry ; Protein Hydrolysates - chemistry ; Protein-polysaccharide interactions ; Solubility ; Soy proteins ; Soybean Proteins - chemistry ; Soybean Proteins - metabolism
  • É parte de: Food chemistry, 2019-10, Vol.294, p.216-223
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: •Report on soy protein hydrolysates (SPHs) – galactomannan (GA) mixtures.•Gelation of the SPHs occurred at lower temperature in the presence of the GA.•The positive effect of the GA upon gelation of SPH depends on the degree of hydrolysis.•Addition of galactomannan improves emulsifying properties of the SPHs.•Diversity of functionalities by changing size and concentration of both biopolymers. Soy protein hydrolysates (SPH) with different degrees of hydrolysis (DH 0–16%) were obtained by varying the time of hydrolysis with bromelain. The objective of this study was to evaluate how selected techno-functional properties (gelation, emulsification) of SPH were affected by the presence of a non-gelling polysaccharide. A slight hydrolysis was beneficial to increase gel strength. Also, the emulsifying activity was improved for low DHs, whereas hydrolysis was detrimental for emulsion stability. Under certain conditions the presence of the non-gelling polysaccharide was beneficial to improve SPHs’ functional properties, but the effect was in general complex and strongly dependent on both biopolymers’ concentration and molecular weight. Nevertheless, it was demonstrated that by using SPH and galactomannan mixtures and controlling the biopolymers’ concentration and molecular weight, improved functionalities can be obtained with useful applications in food formulation.
  • Editor: England: Elsevier Ltd
  • Idioma: Inglês
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