陕西科技大学学报（自然科学版）2006，Vol.24Issue(2)：13-20,8.
谷氨酰胺转移酶对大豆分离蛋白、酪蛋白酸钠和明胶膜特性的影响
EFFECTS OF TRANSGLUTAMINASE ON PROPERTIES OF CAST FILMS FROM SOY PROTEIN ISOLATES,SODIUM CASEINATE AND GELATIN
摘要
Abstract
Effects of transglutaminase (TGase) treatment on properties of cast films from soy protein isolates (SPI-1, SPI-2), sodium caseinate (NaCas-1, NaCas-2) and gelatin (G-1, G-2) were investigated. Tensile strength (TS), elongation at break (EB), moisture content (MC), total soluble matter (TSM), surface hydrophobicity (S0) as well as transparency of TGase-treated films and control films were evaluated after conditioning film specimens at 25 ℃ and 50% relative humidity (RH) for 48 h. TGase treatment significantly increased (p≤ 0.05) the TS and S0 of the most of protein films by 13.1%～33.2% and 2.4%～216.1%, respectively, and simultaneously significantly decreased the TSM of all films by 21.2%～69.9%. TGase treatment improved the EB of films cast from SPI-2, NaCas and gelatin, while reduced the EB of SPI-1 films. Transparency of TGase-treated films from SPI-1, NaCas-2 and G-1 was lower than that of control. SDS-PAGE analyses confirmed the occurrence of cross-linking induced by TGase, which may account for the higher TS, S0 and lower TSM (as compared to those of the control).关键词
谷氨酰胺转移酶/蛋白质膜/膜性能/交联Key words
tranglutaminase(TGase)/protein film/film property/cross-linking分类
生物科学引用本文复制引用
姜燕,温其标,唐传核,杨晓泉..谷氨酰胺转移酶对大豆分离蛋白、酪蛋白酸钠和明胶膜特性的影响[J].陕西科技大学学报（自然科学版）,2006,24(2):13-20,8.基金项目
国家自然科学基金项目(编号:20306008) （编号:20306008）
