کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10279001 464595 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling the drying of a twig of “yerba maté” considering as a composite material
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Modelling the drying of a twig of “yerba maté” considering as a composite material
چکیده انگلیسی
Physical properties for bark and xylem of twigs of yerba maté were analyzed to use them in a mathematical model for describing the drying of composite materials. Shrinkage coefficient and apparent density depended on moisture content and were found to be different for both regions. Equilibrium moisture contents for different water activity values were measured at temperatures between 30 and 90 °C. Desorption moisture isotherms varied with the type of material and with temperature. Between 30 and 60 °C, the GAB model exhibited the better fit to the sorption data, while in the range 70-90 °C, experimental data were better described by the Halsey's model. Equilibrium moisture content between xylem and bark could be described through a potential function, which did not depend on temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 66, Issue 4, February 2005, Pages 455-461
نویسندگان
, ,