论文部分内容阅读
以蜡质玉米淀粉为原料在优化条件下制备具有乳化能力的低粘度辛烯基琥珀酸淀粉钠(SSOS)。用Brabender粘度仪测定淀粉糊的粘度及其稳定性,发现酶处理前SSOS糊的粘度较蜡质玉米淀粉提高,但稳定性变化不大。研究发现低粘度SSOS微胶囊包埋柠檬油的百分率在57.4%至87.6%(w/w)之间,并取决于SSOS的葡萄糖值。在壁材与芯材的质量比大于3比2,葡萄糖值为12.8时,微胶囊包埋的产率和效率达到最高值。微胶囊在40℃下放置贮存3周后,其微胶囊化效率仅降低3%。通过扫描电镜观察,发现微胶囊为球形的未粘连的颗粒,有些颗粒的表面并不平整。研究结果表明一定葡萄糖值的低粘度SSOS作为微胶囊壁材具有很好的包埋效果。
The waxy corn starch was used as a raw material to prepare low viscosity sodium starch octenyl succinate (SSOS) with emulsifying ability under the optimal conditions. The viscosity and stability of starch paste were measured by Brabender viscometer. The viscosity of SSOS paste before wax treatment was higher than that of waxy corn starch, but its stability did not change much. The percentage of lemon oil embedded in low viscosity SSOS microcapsules was found to be between 57.4% and 87.6% (w / w) and depended on the glucose value of SSOS. When the mass ratio of the wall material to the core material is more than 3 to 2 and the glucose value is 12.8, the yield and the efficiency of the microcapsule embedding reach the highest value. Microencapsulation efficiency decreased by only 3% after being stored at 40 ℃ for 3 weeks. Scanning electron microscopy showed that the microcapsules were spherical unbound particles, some of which were not smooth on the surface. The results show that a certain glucose value of low viscosity SSOS microcapsule wall material has a good embedding effect.