کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10277442 | 464357 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dielectric properties of grape marc: Effect of temperature, moisture content and sample preparation method
ترجمه فارسی عنوان
خصوصیات دی الکتریک مارک انگور: اثر دما، رطوبت و روش آماده سازی نمونه
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
ثابت دی الکتریک، از دست دادن دی الکتریک، انگور مارک، مخلوط معادله،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Microwave assisted extraction enhances antioxidant extraction kinetics in grape marc processing. For an effective microwave process design, the dielectric properties (DPs) of the material must be known under different conditions. This study focused on the DP measurement of grape marc using a resonant cavity measuring device. Grape skin, seeds and their mixtures with three different moisture contents were studied at 28, 39 and 50 °C. At higher moisture content DP showed increasing tendency, while temperature didn't have a definite effect. Good correlation was achieved with the experimental results applying the complex refractive index mixing equation between 0.4 and 0.6 porosity. Also, despite the complexity of natural products properties, the experimental DP values of the real mixture were in agreement with values estimated from DP properties of its individual constituents (grape skin and seeds). Milling was performed to obtain homogeneous material for the measurements, and this effect on the results was also studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 119, Issue 1, November 2013, Pages 33-39
Journal: Journal of Food Engineering - Volume 119, Issue 1, November 2013, Pages 33-39
نویسندگان
Katalin Sólyom, Stefan Kraus, Rafael B. Mato, Volker Gaukel, Heike P. Schuchmann, MarÃa José Cocero,