خشک‌کردن سیب با استفاده از خشک‌کن خورشیدی با چرخه جاذب در دو حالت تابش مستقیم –همرفتی و غیرمستقیم-همرفتی

نویسندگان
شادی یوسفی 1
مهدی کاشانی نژاد 2
حسین درویشی 3
امان محمد ضیایی فر 2
هیمن نوربخش 4
1 دانشجو کارشناسی ارشد علوم و صنایع غذایی، دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
2 استاد گروه علوم و صنایع غذایی، دانشکده صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
3 دانشیار گروه مهندسی بیوسیستم، دانشکده کشاورزی، دانشگاه کردستان
4 استادیار گروه علوم صنایع غذایی، دانشگاه کردستان
10.22034/FSCT.21.154.107
چکیده
دف: هدف از پژوهش حاضر خشک‌کردن سیب با استفاده از خشک‌کن خورشیدی با چرخه جاذب در دو حالت تابش مستقیم –همرفتی و غیرمستقیم-همرفتی می‌باشد. از دو نوع روش خشک کردن مستقیم و غیرمستقیم با جاذب و بدون جاذب رطوبت و خشک کردن در هوای آزاد استفاده شد. ورقه‌های سیب آماده‌شده از قبل (طعم دار شده با دارچین) روی یک قطعه توری با ابعاد مشخص قرار گرفت، وزن اولیه نمونه ها اندازه گیری و در داخل خشک‌کن خورشیدی با چرخه جاذب در دو حالت تابش مستقیم –همرفتی و غیرمستقیم-همرفتی، گذاشته شد؛ و طی فرایند خشک شدن سرعت تبخیر، بافت، چروکیدگی، میزان بازجذب آب، میزان حفظ ویتامین C (آسکوربیک اسید) و تغییر رنگ و خصوصیات حسی در سطوح مختلف تیمار (30 درصد ساکارز و بدون ساکارز و صفر، 5/0، 1 و 2 درصد دارچین) بررسی و همچنین چند نمونه به‌عنوان شاهد بدون طعم‌دار کردن با دارچین به‌تنهایی توسط خشک‌کن خورشیدی خشک شد. تجزیه و تحلیل داده‌ها با روش آماری طرح فاکتوریل کاملاً تصادفی و استفاده از نرم‌افزار آماری SPSS نسخه 26 صورت گرفت.

موضوعات

عنوان مقاله English

Drying apples using a solar dryer with a desiccant cycle in two modes: direct radiation-convection and indirect radiation-convection

نویسندگان English

Shadi yousefi 1
Mehdi Kashani Nejad 2
Hossein Darvishi 3
Aman Mohammad Ziaiifar 2
himan nourbakhsh 4
1 Master student of Food Science and Industry, Faculty of Food Industry, Gorgan University of Agricultural Sciences and Natural Resources
2 Professor, Department of Food Science and Industry, Faculty of Food Industry, Gorgan University of Agricultural Sciences and Natural Resources
3 Associate Professor, Department of Biosystem Engineering, Faculty of Agriculture, University of Kurdistan
4 Assistant Professor, Department of Food Industry Science, University of Kurdistan
چکیده English

Purpose: The purpose of the current research is to dry apples using a solar dryer with an absorbent cycle in two modes of direct-convective radiation and indirect-convective radiation. Two types of direct and indirect drying methods with and without moisture absorbers and drying in open air were used. The pre-prepared apple slices (flavored with cinnamon) were placed on a piece of mesh with certain dimensions, the initial weight of the samples was measured and inside the solar dryer with an absorbent cycle in two modes of direct-convective radiation and indirect-convective radiation. It was placed; And during the drying process, the rate of evaporation, texture, wrinkling, water reabsorption rate, retention rate of vitamin C (ascorbic acid) and color change and sensory characteristics at different levels of treatment (30% sucrose and without sucrose and zero, 0.5, 1 and 2% of cinnamon) and also some samples were dried by solar dryer without flavoring with cinnamon alone. Data analysis was done with the completely random factorial design statistical method and using SPSS version 26 statistical software.

کلیدواژه‌ها English

Solar dryer - direct radiation - convective and indirect - convective - cinnamon - sucrose
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