کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5511639 | 1540214 | 2017 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mathematical modeling of gallic acid release from chitosan films with grape seed extract and carvacrol
ترجمه فارسی عنوان
مدل سازی ریاضی انتشار اسید گالیک از فیلم های کیتوزان با عصاره دانه انگور و کارواکرول
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
Controlled release of antimicrobial and antioxidant compounds from packaging films is of utmost importance for extending the shelf-life of perishable foods. This study focused on the mathematical modeling of gallic acid release into an aqueous medium from three chitosan films, formulated with grape seed extract (GSE) and carvacrol. We quantified the release by HPLC technique during 30 days at three temperatures (5, 25 and 45 °C). The diffusion coefficients, varying with temperature according to an Arrhenius-type relationship, and the respective activation energies for Film-1 and Film-2 were, respectively Deff125°C=3.7Ã10â14 m2sâ1 and Deff225°C=6.1Ã10â14 m2sâ1, Ea1 = 58 kJmolâ1 and Ea2 = 60 kJmolâ1 as obtained from the Fickian fit. The low concentrations of gallic acid released by Film-3 could not be detected by HPLC, therefore the respective diffusion coefficient was not estimated. This study will help with the development and optimization of active packaging (AP) films aiming at improved food preservation and shelf-life extension.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 104, Part A, November 2017, Pages 197-203
Journal: International Journal of Biological Macromolecules - Volume 104, Part A, November 2017, Pages 197-203
نویسندگان
Javiera F. Rubilar, Rui M.S. Cruz, Rommy N. Zuñiga, Igor Khmelinskii, Margarida C. Vieira,