مطالعۀ اثر روش‌ها و پیش‌تیمارهای گوناگون خشک‌کردن بر سینتیک بازآب‌پوشی فلفل قرمز چیلی (capsicum annum)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم و صنایع غذایی، واحد سبزوار، دانشگاه آزاد اسلامی، سبزوار، ایران

2 باشگاه پژوهشگران جوان و نخبگان، واحد سبزوار، دانشگاه آزاد اسلامی، سبزوار، ایران

چکیده

هدف از این مطالعه بررسی تأثیر روش خشک‌کردن به دو صورت خشک‌کردن با هوای داغ و آفتابی و پیش‌تیمار (آنزیم‌بری با آب داغ و تیمار شیمیایی) روی سینتیک انتقال جرم طی پدیدۀ باز‌آب‌پوشی فلفل قرمز چیلی بود. برای این منظور قانون دوم فیک و مدل پلگ برای مدل‌سازی پدیدۀ باز‌آب‌پوشی فلفل قرمز چیلی به‌کار گرفته شد. نتایج نشان داد که مدل پلگ توانست با دقت بالایی پدیدۀ باز‌آب‌پوشی فلفل قرمز چیلی را پیشگویی کند (9320/0≤R2). مقادیر ضرایب انتشار رطوبت در زمینۀ فلفل قرمز چیلی در دامنۀ m2/s 8-10×217/1 تا m2/s 8-10×540/5 قرار دارد. همچنین نتایج نشان داد که پیش‌تیمار آنزیم‌بری با آب جوش در مقایسه با سایر پیش‌تیمارها میزان بازآب‌پوشی را کمی افزایش داده است که بیشترین مقدار این پارامتر در دمای 55 درجۀ سانتی‌گراد مشاهده شد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Study of the effects of drying methods and various pretreatments on the rehydration kinetics of red chili pepper (capsicum annum)

نویسندگان [English]

  • Hasan Tavakolipour 1
  • Mohsen Mokhtarian 2
1 Department of Food Science & Technology, Sabzevar Branch, Islamic Azad University, Sabzevar, Iran
2 Young Researchers and Elite Club, Sabzevar Branch, Islamic Azad University, Sabzevar, Iran
چکیده [English]

The aim of this study was investigation of the effects of pretreatments (hot water blanching and chemical treatments) by hot air and sun drying methods on mass transfer kinetics during red chili pepper rehydration phenomenon. For these purposes Fick's second law and Peleg model were applied for modeling of red chili pepper rehydration phenomenon. The results revealed that, Peleg model could predict red chili pepper rehydration phenomenon with high precision (R2≥0.9320). Moisture diffusion coefficients of red chili pepper were reported in range of 1.217×10-8 m2/s to 5.540×10-8 m2/s. Also, the results showed that, hot water blanching was fairly increased rehydration compared to other pretreatments which maximum value of this parameter was observed at temperature of 55oC.

کلیدواژه‌ها [English]

  • Drying
  • modeling
  • Rehydration kinetics
  • Chemical pretreatments
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