水溶性大豆多糖为壁材制备植酸酶微胶囊耐高温效果研究

Anti - temperature Effect Research of Phytase Microcapsules Which Wall Material Prepared with Water- soluble Soybean Polysaccharide

本文研究了利用水溶性大豆多糖与明胶复凝聚制备植酸酶微胶囊的方法，当大豆多糖、明胶、植酸酶的混合比例分别为5：1：1时，在不同时间的高温处理后，微囊植酸酶的活力保留率最稳定，且保留了较高的活性；同时比较了商品水溶性大豆多糖与自提取改性的两种水溶性大豆多糖作为微囊壁材制备植酸酶微胶囊的耐高温效果。结果表明，自提取改性后的水溶性大豆多糖可以作为包被植酸酶的壁材使用，其微囊耐高温特性良好，甚至某些条件下优于商品水溶性大豆多糖制备的微囊植酸酶。

This paper studies on the phytase microencapsulation preparation methods with watersoluble soybean polysaccharides and gelatin. When soybean polysaccharide, gelatin, phytase mixed with the proportion of 5 ： 1 ： 1 and treated with high temperature in different time, phytase mierocapsules retains the stablist of vitality retention rate and higher activity. Meanwhile the anti - temperatures effect of two kinds of phytase microcapsule which coating material are prepared with two different kinds of extract modified water - soluble polysaccharide are com- pared. The results show that the self - extracted water - soluble modified soybean polysaccharide can be used as the wall coating material . Its anti - temperature peculiarity is fine. Under certain conditions, it is better than that one made with market - sale water - soluble soybean polysaccharide.