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American Chemical Society's Weekly PressPac -- Feb. 13, 2008
Date:2/18/2008

ARTICLE #1 FOR IMMEDIATE RELEASE

Fighting fat bloom can mean a prettier look for Valentines Day chocolates
Journal of Agricultural and Food Chemistry

Chemists in England and the Netherlands have discovered a substance that could keep those boxes of Valentines Day chocolates, and other goodies, looking fresher and tastier. Their finding, which prevents formation of unsightly white films on the outside of chocolate, is scheduled for the March 12 issue of the ACS Journal of Agricultural and Food Chemistry, a bi-weekly publication.

Called fat bloom, white films are actually tiny particles of crystalline fat and most often appear on the surface of chocolates that contain nut-based fillings. The films often alarm consumers, who may mistakenly think good chocolates have gone bad. Although the blooms have been studied for decades, the phenomenon is poorly understood and researchers have had difficulty finding an effective method to reduce their formation.

In the new study, Kevin W. Smith and colleagues crafted a candy-size mechanical model of a chocolate bon-bon using a series of stacked, steel washers. They layered the bottom of each cylinder with different concentrations of a substance called antibloom fat and then filled the top of each cylinder with cocoa butter to represent a chocolate coating. The scientists showed that increasing the amount of antibloom used in the filling slowed the rate of crystal formation, thereby preventing fat bloom. MTS

ARTICLE #1 FOR IMMEDIATE RELEASE Effect of Antibloom Fat Migration from a Nut Oil Filling on the Polymorphic Transformation of Cocoa Butter

DOWNLOAD FULL TEXT ARTICLE http://dx.doi.org/10.1021/jf072151s

CONTACT:
Kevin W. Smith, Ph.D.
Unilever R&D Colworth
Bedfordshire, United Kingdom
Phone: 44-1234 222 786
Fax: 44 1234 222 552
Email:

Contact: Mike Woods
m_woods@acs.org
202-872-4400
American Chemical Society
Source:Eurekalert  

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