کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6591061 456868 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mathematical model for continuous and intermittent microwave-assisted extraction of bioactive compound from plant material: Extraction of β-carotene from carrot peels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Mathematical model for continuous and intermittent microwave-assisted extraction of bioactive compound from plant material: Extraction of β-carotene from carrot peels
چکیده انگلیسی
Microwave-assisted extraction (MAE) is a method that uses microwave energy to extract compounds from materials. Although many studies have recently been published on various aspects of MAE, an adequate model that can be used to predict the transport phenomena during MAE is still lacking. This study was therefore aimed to develop a mathematical model that can be used to describe the evolutions of temperature and concentration of an extract during both continuous and intermittent MAE; carrot peels were used as a test material and β-carotene concentration was modeled. The model consisting of the Maxwell's, energy and species balance equations, along with appropriate initial and boundary conditions, was simulated using the finite element method via COMSOL MultiphysicsTM software. The model was validated by comparing the simulated results with the evolutions of the experimental temperature and β-carotene concentration. In general, the model was capable of predicting the evolutions of the temperature and β-carotene concentration quite adequately. In some cases, however, the temperature prediction was compromised due to the evaporation of solvent, which was not considered in the model. The empirical constants of the model were noted to depend on the specific absorbed microwave power and the sample-to-solvent ratio.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 116, 6 September 2014, Pages 442-451
نویسندگان
, , ,