文章基本信息

标题：Characterization of WPI-NaCas composite films modified by transglutaminase
本地全文：下载
作者：Lei Qiao ; Pan Jiazhen ; Huang Zhiying 等
期刊名称：Scientific Research and Essays
印刷版ISSN：1992-2248
出版年度：2014
卷号：9
期号：9
页码：391-399
DOI：10.5897/SRE2014.5951
语种：English
出版社：Academic Journals
摘要：Synergistic effects of additive amount, reaction time and temperature of transglutaminase on properties of WPI-NaCas composite protein films were discussed by orthogonal experiments. Results indicated that transglutaminase (TGase) modification decreased D50 and D90 of film-forming solution particles, resulting in decrease in water solubility and increase in both mechanical and water barrier properties of films under most conditions. Compared with control sample, scanning electron microscope analysis indicated that cross-section of enzyme modification sample was denser and more impermeable. However, there was no significant difference in both thermogravimetric analysis and solution apparent viscosity changes for all samples. Orthogonal experiment results also showed that TGase reaction time was the most effective factor on tensile strength (TS) and water vapor permeability (WVP) properties of film, and the secondary, tertiary factors were reaction temperature, TGase additive amount respectively. Films modified by 0.1 mg/ml TGase at 50°C for 30 min exhibited the optimum mechanical and water barrier performance.
关键词：Transglutaminase (TGase); mechanical properties; water vapor permeability (WVP); scanning electron microscopy analysis