Tempering, polymorphism and fat crystallization during industrial chocolate manufacture: regimes, behaviours and their effects on finished chocolate quality

Tempering, polymorphism and fat crystallization during industrial chocolate manufacture: regimes, behaviours and their effects on finished chocolate quality

EO Afoakwa, A Paterson

Tempering, a technique of shearing chocolate mass at controlled temperatures is used to promote cocoa butter crystallization in a thermodynamically stable polymorphic form. During chocolate manufacture, the process is used to obtain the stable form V (or β2) of cocoa butter having a melting temperature of 32-34 °C, which gives the desired glossy appearance, good snap, contraction and enhanced shelf life characteristics. However, the tempering sequences, their behaviour during pre-crystallization, the consequential regimes attained and their effects on product quality characteristics are not very well understood. Variations in temper regimes attained during pre-crystallization of chocolates influence their crystallinity, polymorphic status and other physical quality characteristics. Over-tempering causes increases in product hardness, stickiness with reduced gloss and darkening of product surfaces. Under …

Materials Science

2011

https://scholar.google.com/citations?view_op=view_citation&hl=en&user=EZuX1N8AAAAJ&cstart=100&pagesize=100&citation_for_view=EZuX1N8AAAAJ:AeM5kdmBKVwC

English