蚕蛹中脂肪微胶囊化最佳工艺技术的研究

Study on the Optimum Processing Technology about Microcapsule of Silkworm Oil

蚕蛹油脂中含有大量的多不饱和脂肪酸,对人体具有较好的保健功能。但是不饱和脂肪酸极易氧化,且蚕蛹油脂带有微量昆虫特有腥味,因而限制了其在食品中的应用。微胶囊技术不但可以掩盖油脂所带有的不良气味,而且可以强化对油脂和其他易氧化成分的保护功能,增强油脂的稳定性,试验以明胶与阿拉伯胶为壁材,蚕蛹油为芯材,用复凝聚法制备明胶-阿拉伯胶微胶囊的最佳工艺技术。以包埋率为指标分别考察了三者之间比例、温度、pH等单因素对微胶囊成囊的影响,并用正交试验对微胶囊工艺技术进行了优化。确定了较为适宜的成囊条件。试验结果表明最适宜的成囊条件为:明胶、阿拉伯胶和蚕蛹油比例为1∶1∶0.8、成囊温度为45℃、复凝聚的pH为4。

Silkworm oil contained large amounts of polyunsattLrated fatty acids which possessed good health functions. However they were easily oxidized and they also had a kind of insect smell itself. Therefore, it was difficult to use in food industry. Microcapsule techniques could cover bad smell of silkworm oil and enhance protection oil＇s oxidation and improve stability of grease. The optimum processing technology about microcapsule of silkworm oil, using gelatin and Arabic gum as wall material and the oil as the core material by complex coacervation were studied. Embedding rate as the target, they were studied that ratio between the three, temperature, pH etc. affected microcapsule techniques. Then optimum condition was identified by orthogonal experimental design. The results showed that the optimal conditions of microcapsule techniques were ratio of gelatin ,Arabic gum and silkworm oil 1 ： 1 ： 0.8, temperature 45℃, pH 4.