Fundamentals of Lipid Crystallization

Edible Oil and Fat Products: Chemistry, Properties, and Safety Aspects
Serpil Metin

Serpil Metin

Cargill Inc., Wayzata, MN, USA

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Richard W. Hartel

Richard W. Hartel

University of Wisconsin, Madison, WI, USA

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First published: 17 February 2020
Citations: 2

Abstract

Control of crystallization of lipids is important in many food products, including margarine, chocolate, butter, and shortening. In these products, the aim is to produce the appropriate number and size distribution of crystals in the correct polymorphic form since the crystalline phase plays a large role in such food properties as appearance, texture, spreadability, and flavor release. Thus, understanding the processes that control crystallization is critical to controlling quality in these products. Controlling crystallization requires an understanding of the driving force that leads to crystallization, the process of forming the crystalline phase (nucleation) and then subsequent crystal growth and polymorphic transformation to obtain the final crystalline phase volume in equilibrium with the remaining liquid fat. Owing to the complex composition of most natural fats, our understanding of these processes remains incomplete.

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