کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
225225 464482 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of extrusion of flaxseeds for in vitro protein digestibility analysis using response surface methodology
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Optimization of extrusion of flaxseeds for in vitro protein digestibility analysis using response surface methodology
چکیده انگلیسی

Flaxseed is a good source of plant protein for both human diet and animal feed. Extrusion process effectively improves the digestion of flaxseed. In the present work, the effects of extrusion parameters such as screw speed, moisture content, temperature and feed rate on the IVPD of the extruded flaxseeds were investigated. A central composite design was used with four controlled variables: screw speed (70, 120, 170, 220 and 270 r/min); moisture content (4%, 10%, 16%, 22% and 28%); temperature (84, 108, 132, 156 and 180 °C); and feed rate (25.4, 47.4, 69.4, 91.4 and 113.4 kg/h). The experimental values of IVPD measured from 69.46% to 77.43%. A second-order model was obtained to predict the IVPD. It has been found that moisture content and feed rate affect the IVPD more significantly compared with the temperature and screw speed. In the present study, the maximum digestibility was obtained when the screw speed, moisture content, temperature and feed rate were 120 r/min, 10%, 120 °C and 91.4 kg/h, respectively. The application of this analysis method for optimizing the extrusion process of flaxseeds is discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 85, Issue 1, March 2008, Pages 59–64
نویسندگان
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