تاثیر پارامتر‌های عملیاتی خشک‌کن بستر فورانی بر خصوصیات فیزیکی پودر شیر

نویسندگان
شهربانو حامدی 1
حمیدرضا اخوان 2
محمد هادی نعمت اللهی 3
محمد مهدی افصحی 1
1 مهندسی شیمی، دانشکده مهندسی، دانشگاه شهید باهنر کرمان
2 بخش علوم و مهندسی صنایع غذایی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان
3 گروه بیوشیمی، دانشکده پزشکی، دانشگاه علوم پزشکی کرمان
چکیده
در این تحقیق اثر دمای هوای ورودی و نیز اثر دبی شیر ورودی بر خصوصیات فیزیکی پودر به‌دست آمده از خشک‌کن بستر فورانی بررسی شد. نمونه‌های شیر در سه سطح دمای هوای ورودی (80، 100 و 120 درجه سلسیوس) و سه سطح دبی شیر ورودی (333/1، 500/2 و 556/3 میلی‌لیتر بر دقیقه) در سامانه بستر فورانی خشک شدند. اثر این عوامل بر خصوصیات فیزیکی (چگالی توده، چگالی ضربه، جریان‌پذیری، رنگ و میزان رطوبت) آنها مورد ارزیابی قرار گرفت. با استفاده از روش سطح پاسخ میزان تاثیرگذاری عامل‌های ذکر شده بر خصوصیات فیزیکی پودر شیر مشخص و مدل‌سازی شد. مقادیر بهینه دمای هوای ورودی و دبی خوراک ورودی به ترتیب معادل 82/93 درجه سلسیوس و 333/1 میلی‌لیتر/دقیقه به‌دست آمد. در شرایط بهینه، مقادیر مطلوب هر یک از خصوصیات فیزیکی پیش‌بینی گردید و با داده‌های تجربی به‌دست آمده در شرایط بهینه ارزیابی شد.
کلیدواژه‌ها
فرآیند خشک‌کردن
بستر فورانی
پودر شیر
خصوصیات فیزیکی

موضوعات

عنوان مقاله English

Effect of operational parameters of spouted bed dryer on the physical properties of milk powder

نویسندگان English

Shahrbanoo Hamedi 1
Hamidreza Akhavan 2
Mohammad Hadi Nematollahi 3
Mohammad Mehdi Afsahi 1
1 Department of Chemical Engineering, Faculty of Engineering, University of Shahid Bahonar
2 Assistant Professor, Department of Food Science and Technology, Faculty of Agriculture, University of Shahid Bahonar
3 Department of Clinical Biochemistry, Faculty of Medical, Kerman University of Medical Sciences
چکیده English

In this study, the effect of the inlet air temperature and milk flow rate on the physical properties of the milk powder obtained from the spouted bed dryer was investigated. Milk samples were dried at three levels of inlet air temperature (80, 100 and 120 ○C) and three levels of milk flow rate (1.333, 2.500, 3.556 ml/min). The effect of these factors on the physical properties (bulk density, tapped density, flowability, color, and moisture content) of the powders was evaluated. The effects of the mentioned factors on the physical properties of milk powder were determined and modeled using response surface methodology. The optimum inlet air temperature and the milk flow rate was obtained 93.82 ○C and 1.333 ml/min, respectively. Under these conditions, the desired values for each physical parameter were predicted and compared with the experimental data.

کلیدواژه‌ها English

Drying
Spouted bed
Milk powder
Physical properties
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