Effect of gelatine on the texture of yoghurt and of acid-heat-induced milk gels
A penetrometry study was made of the effect of the addition of gelatine on the texture characteristics of yoghurts and acid-heat-induced milk gels. Detailed analysis of the various penetration profiles provided valuable information about the nature of the samples studied. Gelatine was compatible with the milk systems over a wide range of concentrations and it prevented syneresis. In yoghurts prepared with and without the addition of skim-milk powder, the addition of increasing concentrations of gelatine up to 1.5% gradually modified the mechanical characteristics of the final gels. In acid-heat-induced milk gels, whose mechanical characteristics depend on the final pH value, the addition of increasing quantities of gelatine up to 6.67% practically eliminated this dependence, and the effect of pH was only significant in the gels with 1.5% gelatine, which were structurally weaker.
Main Authors: | Fiszman, Susana, Salvador, Ana |
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Format: | artículo biblioteca |
Published: |
Springer
1999-02
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Subjects: | Gelatine, Yoghurt, Acidic milk gels, Texture, Firmness, |
Online Access: | http://hdl.handle.net/10261/333331 |
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