کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
974247 1480141 2015 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Statistical physics studies of multilayer adsorption isotherm in food materials and pore size distribution
ترجمه فارسی عنوان
مطالعات فیزیک آماری ایزوترم جذب چند لایه در مواد غذایی و توزیع اندازه ذرات
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
چکیده انگلیسی


• The food adsorption provides information on the interaction of biopolymers.
• Treat adsorption problems using statistical physics methods.
• Determination of thermodynamic functions.
• The interest in determining the adsorbent characteristics as the PSD.

Water sorption isotherms of foodstuffs are very important in different areas of food science engineering such as for design, modeling and optimization of many processes. The equilibrium moisture content is an important parameter in models used to predict changes in the moisture content of a product during storage. A formulation of multilayer model with two energy levels was based on statistical physics and theoretical considerations. Thanks to the grand canonical ensemble in statistical physics. Some physicochemical parameters related to the adsorption process were introduced in the analytical model expression. The data tabulated in literature of water adsorption at different temperatures on: chickpea seeds, lentil seeds, potato and on green peppers were described applying the most popular models applied in food science. We also extend the study to the newest proposed model. It is concluded that among studied models the proposed model seems to be the best for description of data in the whole range of relative humidity. By using our model, we were able to determine the thermodynamic functions. The measurement of desorption isotherms, in particular a gas over a solid porous, allows access to the distribution of pore size PSD.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 432, 15 August 2015, Pages 373–390
نویسندگان
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