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International Journal of Dairy Science

Year: 2008 | Volume: 3 | Issue: 1 | Page No.: 20-28
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Authors

A.F. Farrag

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Research Article

Emulsifying and Foaming Properties of Whey Protein Concentrates in the Presence of Some Carbohydrates

A.F. Farrag
Carbohydrates (glucose, sucrose, fructose, starch and inulin) were added to whey protein concentrates at the ratios of 1, 2 and 3%. The emulsifying and foaming properties of WPC-carbohydrates model systems were examined. One percent of the tested carbohydrates increased significantly (p<0.05) for the Emulsion Activity Index (EAI) and Emulsion Stability Index (ESI) of the prepared emulsions. Sucrose showed the highest EAI and ESI followed by fructose, glucose, starch and inulin compared with samples without carbohydrates. Increasing of added starch and inulin to 2 or 3% improved emulsion activity index but decreased emulsion stability index compared to other sugars. Sucrose addition was significant (p<0.05) increase in foam stability compared with other carbohydrates, while starch and inulin showed insignificant (p>0.05) changes in foam formation or stability.
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