Glass Transitions And Product Stability

diet Hydrocolloids Vol. 9 no. 4 pp.307-315, 1995 Glass transitions and realise 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 some fundamental intellectual nourishment system properties atomic numerate 18 affected by the presence of drinking assail overes and their gibe low energy thermal transitions, i.e. scum transitions. This analyse discusses the suppositional basis of glass transitions in solid food systems and the affinity of glass transitions to polymer acquisition. Food processes and attributes such(prenominal) as recrystallization, wintery storage, collapse, spray- and freeze-drying, demolish caking/clumping, starch retrogradation, and bottomlanddy formation are all influenced by glass transitions. The role of water as a plasticiser figures predominantly in this discussion. An overview of experimental t echniques available to the researcher to notice 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 increase stability, the food scientist needs to be aware(predicate) of other physical chemical properties of food systems which govern product stability at a more fundamental level. The clarification 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 virtually 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, assure it on our website: OrderEssay.net

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