کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1986453 1540249 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biodegradable films produced from the bacterial polysaccharide FucoPol
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Biodegradable films produced from the bacterial polysaccharide FucoPol
چکیده انگلیسی

FucoPol, an exopolysaccharide produced by Enterobacter A47, grown in bioreactor with glycerol as carbon source, was used with citric acid to obtain biodegradable films by casting. The films were characterized in terms of optical, hygroscopic, mechanical and barrier properties. These films have shown to be transparent, but with a brown tone, imparting small colour changes when applied over coloured surfaces. They were hydrophilic, with high permeability to water vapour (1.01 × 10−11 mol/m s Pa), but presented good barrier properties to oxygen and carbon dioxide (0.7 × 10−16 mol m/m2 s Pa and 42.7 × 10−16 mol m/m2 s Pa, respectively). Furthermore, films have shown mechanical properties under tensile tests characteristic of ductile films with high elongation at break, low tension at break and low elastic modulus. Although the obtained results are promising, films properties can be improved, namely by testing alternative plasticizers, crosslinking agents and blends with other biopolymers. Taking into account the observed ductile mechanical properties, good barrier properties to gases when low water content is used and their hydrophilic character, it is foreseen a good potential for FucoPol films to be incorporated as inner layer of a multilayer packaging material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 71, November 2014, Pages 111–116
نویسندگان
, , , , , ,