Glass Transitions And Product Stability

diet Hydrocolloids

Vol. 9 no. 4 pp.307-315, 1995

Glass transitions and produce stability-an oerview*
Timothy W.Schenz

Abbott Laboratories, Ross Products Division, 625 Cleveland Avenue, Columbus, OH 43215, USA

Abstract
Research since 1980 increasingly has shown that many fundamental intellectual nourishment system properties atomic number 18 affected by the presence of drinking rubbish overes and their gibe low energy thermal transitions, i.e. scum transitions. This review discusses the suppositional basis of glass transitions in food systems and the relationship of glass transitions to polymer acquisition. Food processes and attributes such as recrystallization, frozen storage, collapse, spray- and freeze-drying, powder caking/clumping, starch retrogradation, and candy formation are all influenced by glass transitions. The role of water as a plasticizer figures predominantly in this discussion. An overview of experimental techniques available to the researcher to measure glass transitions in food systems will also be presented.

Introduction
Food hydrocolloids such as neutral or charged polysaccharides and proteins are often used to impart crossway stability to a food system.



While these functional ingredients can improve product stability, the food scientist needs to be aware of other physical chemical properties of food systems which govern product stability at a more fundamental level. The elucidation of these properties is the result of over a decade of research by many groups canvas the importance of glass transitions in food systems, both waterrich and water-poor (1-3). In fact, the application of the knowledge learned in the whole study of glass transitions in food systems has had such success in understanding and predicting the behavior of food systems, that it has almost become a discipline itself within food science. Many processes and properties encountered in food science are affected by or caused by glass transition phenomena. Some examples include frozen storage stability...If you ask to get a full essay, order it on our website: Ordercustompaper.com



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