کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8329062 | 1540209 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Aggregation of zein in aqueous ethanol dispersions: Effect on cast film properties
ترجمه فارسی عنوان
تجمع ژین در پراکندگی اتانول آبی: اثر بر خواص فیلم ریخته گری
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کلمات کلیدی
پروتئین ذرت، پراکندگی نور پویا، تجزیه و تحلیل مکانیکی پویا،
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
In this study, we evaluate the influence of zein aggregation in aqueous ethanol dispersions on the properties of zein films. The effects of zein concentration, ethanol content and temperature on transmittance of zein dispersions were investigated. Dynamic light scattering was used to measure the degree of zein aggregation in the dispersions. The results indicate that particle size of zein increased with higher zein concentration, lower ethanol level and at lower temperatures. Zein films were prepared by casting from 70% and 90% aqueous ethanol dispersions at different drying temperatures and were evaluated for appearance, thermomechanical and mechanical properties. Higher ethanol levels and higher drying temperatures promoted the formation of more homogenous films. Films made from higher ethanol dispersions had lower glass transition temperatures than those made from lower ethanol dispersions. Moreover, the fragility factor classified the films as strong systems. Mechanical properties of films were measured at different drying temperatures. Stiffer and more resistant films were developed as the drying temperature increased. In conclusion, film properties can be tailored by controlling the composition of the film casting solvent and the drying temperature. Differences in film properties were found to relate to differences in initial degree of aggregation of zein dispersions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 106, January 2018, Pages 360-368
Journal: International Journal of Biological Macromolecules - Volume 106, January 2018, Pages 360-368
نویسندگان
Lorina Bisharat, Alberto Berardi, Diego R. Perinelli, Giulia Bonacucina, Luca Casettari, Marco Cespi, Hatim S. AlKhatib, Giovanni F. Palmieri,