CAJ | 학술논문

比较11种乳化剂对大豆分离蛋白膜抗拉伸强度、断裂伸长率、水蒸气透过率和O_2透气量的影响效果,结果显示蜂蜡和斯潘20对大豆分离蛋白膜具有最佳改善效果.进一步研究这两种乳化剂单一添加及复合使用时对膜综合性能的影响,同时测定膜表面接触角、成膜溶液中巯基及二硫键数量优化乳化剂使用量,最终获得复合使用两种乳化剂时,大豆分离蛋白膜性能改善效果明显,其添加量为蜂蜡0.0845%,斯潘200.506%,甘油1.335%.
비교11충유화제대대두분리단백막항랍신강도、단렬신장솔、수증기투과솔화O_2투기량적영향효과,결과현시봉사화사반20대대두분리단백막구유최가개선효과.진일보연구저량충유화제단일첨가급복합사용시대막종합성능적영향,동시측정막표면접촉각、성막용액중구기급이류건수량우화유화제사용량,최종획득복합사용량충유화제시,대두분리단백막성능개선효과명현,기첨가량위봉사0.0845%,사반200.506%,감유1.335%.
In this project,eleven kinds of emulsifier were evaluated to select proper emulsifiers for improving the performance of soy protein isolate edible film,such as tensile strength,elongation at break,water vapor permeability and O_2-permeation.Furthermore,the emulsifier doses were optimized through detecting the contact angle of the film surface and analyzing the amounts of sulfhydryl group and disulfide bond in the film forming solution.Results:Beeswax and span20 display better improving effect than others,and complex application of the two emulsifiers displays the best effect.The optimum adding doses for improving the soy protein isolate film are beeswax 0.0845%,span20 0.506%,and glycerol 1.335%.