کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1191222 963552 2006 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variable hydration of small carbohydrates for predicting equilibrium properties in diluted and concentrated solutions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Variable hydration of small carbohydrates for predicting equilibrium properties in diluted and concentrated solutions
چکیده انگلیسی

A physical–chemical model is proposed to describe the equilibrium properties of binary and multicomponent water–carbohydrate mixtures.The chemical part of the model accounts for the hydration equilibrium of carbohydrate with the formation of carbohydrate n-water molecules in a single stage process; n, the hydration number, and K, the hydration equilibrium constant, are the two independent parameters in this part.The physical part of the model is the UNIFAC group-contribution model as modified by Larsen et al. (I.E.C. Research, 26 (1987) 2274–2286). The original functional groups and the structural and interaction parameter values are maintained and introducing new groups such as pyranose rings, furanose rings and osidic bonds was not necessary.The model is compared to experimental data including water activity, osmotic coefficients, activity coefficients, freezing and boiling point temperatures and solubility for binary systems containing xylose, glucose, mannose, galactose, fructose, sucrose, maltose, lactose and trehalose and for food products containing sugars.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 96, Issue 3, June 2006, Pages 387–401
نویسندگان
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