改性胡萝卜纤维对大豆分离蛋白膜阻二氧化碳和氧气性能的影响

Effect of modified carrot fiber on permeability of soy protein isolate films

以胡萝卜渣中提取的胡萝卜纤维为原材料,将改性胡萝卜纤维添加到大豆分离蛋白中制备可食膜,研究纤维素酶改性条件对膜二氧化碳透过率(Pco2)、氧气透过率(Po2)和选择透气比(β)的影响。结果表明,当胡萝卜纤维质量分数为30%、纤维素酶浓度为0.3 mg/mL和纤维素酶反应时间为2 h时,可食膜阻CO2和O2性能与选择透气性能最佳。

The carrot fiber extracted from carrot pomace.The edible films made from soy protein isolate and cellulase modified carrot fiber were developed.The objective of this work was to investigate the reaction conditions of cellulase that the influence on permeability of the edible films were including the carrot fiber content,cellulose content,cellulose reaction time.There is the optimal Pco2 and Po2 and the maximum β when increasing the carrot fiber content（30%）,the cellulase content（0.4 mg/mL）,and the cellulase reaction time（2 h）.