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Texture development in ice cream - effects of adding cocoa solids

Wilbey, R.A., Bell, A.E., Levy, M. and Buxi, P.K. (2003) Texture development in ice cream - effects of adding cocoa solids. In: Tharp, B. (ed.) Ice cream II: proceedings of the second IDF international symposium on ice cream. International Dairy Federation, Brussels, pp. 276-280. ISBN 9789290980384

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Dynamic rheological techniques can aid the understanding of the factors contributing to ice cream structure, though the data obtained differs from that deduced from destructive techniques. Studies have shown that ice cream systems are both strain- and frequency-dependent. Chocolate ice cream is normally more viscous than the equivalent vanilla ice cream during mix preparation and has more body on freezing. Ice creams were prepared with and without cocoa solids and frequency sweeps were made from 0.1 to 100 Hz at 0.1% strain. With rapidly frozen ice creams, both G' and G" increased in the presence of cocoa solids. Comparison of mixes made with and without low-fat cocoa powder or non-gelatinizing starch demonstrated a similar relationship, with higher apparent viscosities in those mixes containing either cocoa powder or the starch. The results were consistent with the cocoa particles adding to the effect of the fat globules in increasing viscosity.

Item Type:Book or Report Section
Divisions:Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences
ID Code:12848
Additional Information:2nd International Symposium on Ice Cream Thessaloniki, GREECE 14 May 2003
Publisher:International Dairy Federation

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