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International Journal of Dairy Science

Year: 2014 | Volume: 9 | Issue: 4 | Page No.: 106-115
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Authors

R.A. Awad

Z.M.R. Hassan

Wafaa M. Salama

Keywords

Research Article

Surface Tension and Foaming Properties as a Simple Index in Relation to Buffalo Milk Adulteration

R.A. Awad, Z.M.R. Hassan and Wafaa M. Salama
Surface tension and foaming properties were examined for buffalo milk samples either raw or adulterated in various ways. The results indicated some difference in surface tension and foaming properties of buffalo milk and its adulterated mixes. The data indicated that skim milk had higher surface tension than whole milk. Addition of water to either whole or skim milk decreased the foam ability compared to controls. Skim milk showed higher foam stability compared to whole milk. Surface tension significantly increased in all milk samples with increasing the added ratio of Skim Milk Powder (SMP). Additions of higher amounts up to 5% SMP into milk either whole or skim led to increase the foam ability and stability of all mixes. Surface tension values were increased with increasing percentage of sucrose added either whole or skim milk. The results indicted that sucrose greatly improved the foam stability of treatments. Addition of salt into whole or skim milk up to 11% led to decrease in foam ability values compared to control being the lowest in whole milk mixes. Surface tension of whole or skim milk mixes was increased with high ratio of added gum. On the other hand, incorporation of gelatin into whole or skim milk lead to decrease in foam ability of all mixes compared to controls. Addition of starch into whole or skim milk decreased foam ability of all mixes compared to controls. On the other hand, addition of starch with different ratios to whole or skim milk improved foam stability values. This improvement was increased with higher percentage of added starch into milk.
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