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Properties of Yogurt Ice Cream Mixes and Resulting frozen Products Prepared by Various Ratios of Ice Cream Mix to Yogurt

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Food and Nutrition Sciences 2021年第12期12卷 1204-1216页

作者： Douglas W. Olson Charles Boeneke Kayanush J. Aryana School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA

The effects of varying the ratio of ice cream mix to whole milk yogurt on the characteristics of the mixes and the resulting frozen products including their ice cream and frozen yogurt controls were investigated. Ratios of ice cream mix to yogurt included 100% yogurt for the frozen yogurt control, 25% ice cream mix and 75% yogurt, 50% ice cream mix and 50% yogurt, 75% ice cream mix and 25% yogurt, and 100% ice cream mix for the ice cream control. The resulting mixes were sampled for analysis of total solids content, fat content, pH, and viscosity and then frozen in a batch freezer. The frozen products were analyzed for MRS lactobacilli counts, rate of meltdown at 21°C (volume after 1 h and time for 15 mL to melt), and sensory properties (flavor and body/texture). The total solids contents ranged from 11.89% to 39.65%, and the fat contents ranged from 2.8% to 12.6% for the 100% yogurt and 100% ice cream mixes, respectively. The pH ranged from 4.55 for the 100% yogurt to 6.77 for the 100% ice cream mix. The 100% yogurt sample had the highest viscosity. As expected, the 100% yogurt and the 75% yogurt samples had the highest MRS lactobacilli counts. The rate of meltdown increased with the increasing proportion of ice cream in the yogurt ice cream. The frozen products consisting of 75% and 100% ice cream received the highest flavor scores and body/texture scores. Yogurt ice cream made from 75% ice cream usually had more desirable meltability and sensory properties than yogurt ice creams made from either 25% or 50% ice cream and provides an opportunity for delivering a desirable product that has a healthy image.

关键词： Yogurt Ice Cream frozen desserts Lactobacilli Sensory

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