MOISTURE SORPTION CHARACTERISTICS OF STARCH MATERIALS
作者:
W.A.M. McMinn,
T.R.A. Magee,
期刊:
Drying Technology
(Taylor Available online 1997)
卷期:
Volume 15,
issue 5
页码: 1527-1551
ISSN:0737-3937
年代: 1997
DOI:10.1080/07373939708917306
出版商: Taylor & Francis Group
关键词: desorption isotherm;Guggenheim-Anderson-de Boer equation;potato starch gel;static gravimetric technique
数据来源: Taylor
摘要:
An understanding of the sorptional equilibrium of food systems is an important objective in food engineering. In particular, a knowledge of the equilibrium characteristics of foodstuffs is an essential prerequisite for interpretation of the mass transport phenomena during drying. The equilibrium moisture content of a food system is developed as a result of the interaction between the material and the environment. A standard static gravimetric technique was adopted to evaluate the moisture sorption characteristics of the model food gels. The high-starch systems displayed Type II isotherm characteristics, while the high-sugar systems presented Type III behaviour. Adequate quantitative evaluation of the sorption characteristics was realized on the basis of the Guggenheim-Anderson-de Boer model.
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