کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
222678 464289 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of blanching on enzyme activity, color changes, anthocyanin stability and extractability of mangosteen pericarp: A kinetic study
ترجمه فارسی عنوان
اثر بلانچ شدن بر فعالیت آنزیم، تغییر رنگ، پایداری آنتوسایانین و قابلیت استخراج مگسنتین پریکارپ: یک مطالعه سینتیکی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• PPO of mangosteen pericarp had high thermal stability.
• Monophasic first order modeled the thermal inactivation of PPO.
• Degradation kinetics of anthocyanins was best fitted by Weibull model.
• Blanching resulted in the increase in the efficiency of anthocyanin extraction.

Mangosteen pericarp is a rich source of anthocyanins. However, the high polyphenol oxidase (PPO) activity challenges potential applications of pericarp as natural colorant. The kinetics of PPO inactivation, anthocyanin loss and color changes were determined over a temperature range of 60–100 °C. First-order kinetic model provided the best prediction of the PPO inactivation (R2 ≥ 0.977), while anthocyanin loss was described by a Weibull kinetic model (R2 ≥ 0.969). The activation energies of PPO inactivation, anthocyanin loss and total color changes were 43.11, 57.66 and 18.86 kJ/mol, respectively. Anthocyanin content was the most sensitive parameter towards temperature changes, suggesting the importance of its monitoring as a quality parameter during thermal processing. Blanching enhanced the efficiency of anthocyanin extraction. Gathering the quantitative information on the changes of PPO activity as well as quality characteristics during blanching of mangosteen pericarp is important in order to design a proper pre-processing condition.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Food Engineering - Volume 178, June 2016, Pages 12–19
نویسندگان
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