کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
224790 464461 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Use of Weibull distribution for describing kinetics of antioxidant potential changes in fresh-cut watermelon
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Use of Weibull distribution for describing kinetics of antioxidant potential changes in fresh-cut watermelon
چکیده انگلیسی

Changes in antioxidant capacity, vitamin C, lycopene and total phenolic compound retention of fresh-cut watermelon stored at selected temperatures (5–20 °C) for 14 days storage were accurately described by a Weibull distribution function. The temperature dependency of the Weibull kinetic rate constants was studied through an Arrhenius-type relationship. The degradation kinetic constants of Weibull model increased with temperature. Therefore, initial antioxidant potential of fresh-cut watermelon was best maintained at storage temperature of 5 °C for 14 days. The activation energies for lycopene, vitamin C, antioxidant capacity and total phenolic compounds were 56.5 kJ mol−1, 55.9 kJ mol−1, 34.5 kJ mol−1 and 26.9 kJ mol−1, respectively. Thus, a high temperature sensitivity of lycopene, vitamin C and antioxidant capacity related reactions were observed compared to that of total phenolic compounds.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 95, Issue 1, November 2009, Pages 99–105
نویسندگان
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