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1 Dreyer's Grand Ice Cream, 4494 Campbell Road, Houston, TX 77041
2 Department of Food Science and Human Nutrition, University of Missouri, Columbia 65211
Nonfat (0.5%), low fat (4%), reduced fat (6%), and full fat (9%) chocolate ice creams were made. Whey protein and polydextrose were added as required so that all formulations contained the same amount of total solids. Ice cream was stored at a control temperature of 30°C or was heat-shocked at 12°C. Hardness, viscosity, and melting rate were measured through physical methods. Trained panelists conducted descriptive sensory analyses of the samples at 0 and 4 wk. Attribute ratings were analyzed by analysis of variance and least significant difference mean separation. Milk fat at concentrations of 9 and 6% produced more creaminess and smoothness, as well as a less intense cocoa flavor, than it did at concentrations of 4 or 0.5%. Consumer acceptance (n = 98) did not differ among the fresh ice creams. Data showed that ice creams containing higher milk fat concentrations are better protected against heat shock damage in terms of cocoa flavor and smoothness of texture.
Key Words: ice cream chocolate milk fat
Submitted on August 28, 1998
Accepted on March 15, 1999
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