بررسی تاثیر فرآیند خشک کردن مادون قرمز بر سینتیک خشک شدن و شاخص های رنگی برگ اناریجه (Froriepia subpinnata)

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکترا، دانشگاه علوم کشاورزی و منابع طیبعی گرگان

2 استاد، دانشگاه علوم کشاورزی و منابع طیبعی گرگان

چکیده

خشک ­کردن یکی از روش­های مرسوم برای افزایش ماندگاری محصولات کشاورزی است. در این تحقیق، امواج مادون‌قرمز (IR) به‌صورت لامپ‌های رشته‌ای (مدادی) به‌عنوان یکی از منابع حرارتی جدید برای خشک‌کردن برگ اناریجه (Froriepia subpinnata)، مورداستفاده قرار گرفت. این پژوهش با هدف کاهش زمان خشک‌کردن و حفظ بیش‌تر کیفیت فراورده خشک‌شده و هم‌چنین تعیین بهترین مدل برای خشک‌کردن، انجام شد. برگ‌های اناریجه در سطوح شدت تابش IR به میزان 115، 5/202 و 290 وات و فاصله لامپ‌های IR تا سطح نمونه به اندازه 5، 5/7 و 10 سانتی‌متر خشک‌شدند. زمان خشک‌کردن برگ‌های اناریجه تا رسیدن به محتوای رطوبت ثابت اندازه‌گیری شد. رفتار خشک‌شدن اناریجه در خشک­کن IR بر اساس 4 مدل ریاضی پیچ، وانگ و سینگ، پارابولیک و لگاریتمی موردبررسی قرار گرفت. نتایج نشان داد افزایش توان (شدت تابش) و فاصله لامپ‌های IR تا سطح نمونه، به‌ترتیب موجب کاهش و افزایش زمان خشک‌کردن برگ‌های اناریجه می‌گردد. با افزایش توان و فاصله نمونه­ها تا منبع تابشی؛ شاخصL* نمونه‌های اناریجه به‌ترتیب کاهش و افزایش یافت. علاوه‌بر این برازش داده‌ها با 4 مدل موردنظر نشان داد که مدل پیچ به علت داشتن بالاترین R2 و کم‌ترین RMSE و SSE، بهترین مدل برای پیش­بینی رفتار خشک‌شدن برگ‌های اناریجه تحت شرایط مورد آزمایش می‌باشد. خشک­کردن نمونه­ها تا رسیدن به محتوی رطوبت ثابت انجام شد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of infrared radiation on drying kinetics and color indexes of Anaryjeh (Froriepia subpinnata) leaf

نویسندگان [English]

  • Mohammad Mehdi Seyyed abadi 1
  • Alireza Asadi amirabadi 1
  • Afsaneh Taheri 1
  • Mehdi Kashaninezhad 2
1 PhD Student, Faculty of Food Science & Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
2 Professor, Faculty of Food Science & Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
چکیده [English]

Drying is one of the conventional methods for storing of agricultural products. In this study, double ended infrared lamp as a new heat source was used for drying of Anaryjeh (Froriepia subpinnata) leaf. This study was performed to achieve the minimum drying time and high protection quality of dried product, as well as selection of best model for drying. Anaryjeh leaves were dried in the range of radiation intensity (115, 202.5 and 290 watt) and distance of IR lamps to surface of sample (5, 7.5 and 10 cm). The time of Drying for Anaryjeh leaves to reach of constant moisture (wet based) was measured. Drying behavior of Anaryjeh leaves in IR dryer was evaluated with mathematical model; consist of Page, Wang & Singh, Parabolic and Logarithmic. The results showed an increase in power (intensity); drying time decreased. Also with increasing in distance of IR lamps to sample surface, enhanced drying time. An increase in distance of samples from the radiation source; L * of Anaryjeh leaves reduced and enhanced, respectively. Moreover, the result of fitting by 4 model showed that the page model with the highest R2 and lowest RMSE and SSE, was the best model to predict the drying behavior of Anaryjeh leaves in experiment conditions.

کلیدواژه‌ها [English]

  • Drying
  • IR
  • Anaryjeh
  • L*
  • Model
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