摘要
研究了增塑剂对大豆分离蛋白膜(热法成膜和酶法成膜)成膜特性的影响。增塑剂的种类(甘油、山梨醇或甘油山梨醇的等量混合物)对大豆分离蛋白膜的性能有明显影响。无论是否添加谷氨酰胺转移酶(TGase)，以山梨醇为增塑剂的膜都具有最高的抗拉强度、表面疏水性和总可溶性物量，最低的断裂伸长率、水分含量和透光率。TGase处理SPI(4U／g．蛋白)，可显著改善蛋白膜的抗拉强度和表面疏水性，抗拉强度和表面疏水性分别比对照膜增加10％～20％和17％～56％(P≤0.05)；同时也明显降低了(P≤0.05)膜的断裂伸长率、水分含量、总可溶性物量及透光率。
The objective of this work was to investigate the effect of plasticizer types （glycerol, sorbitol and 1 ： 1 mixture of glycerol and sorbitol ）on the properties of cast films （heat-induced films and transglutaminase-induced films） of soy protein isolates （SPI）. Plasticizer types had an obvious effects on the properties of SPI films. Films cast with 0.6 g sorbitol/g pro. had the highest TS, So and TSM values, while the lowest EB, MC and transparen- cy values. Transglutaminase （TGase） treatment significantly increased （p≤0.05） the TS and So values of SPI films by 10-20 % and 17-16 % , respectively, and simultaneously significantly decreased the EB, MC, TSM and transparency values significantly.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2005年第11期112-116,共5页
Food and Fermentation Industries
基金
国家自然科学基金(No.20306008)
