【摘要】 以单因素为基础,采用正交实验的方法,探究制备油茶籽壳色素微胶囊的最佳工艺参数,以包埋率为指标.实验结果表明:以微晶纤维素为裹材时,采用物理吸附法进行微胶囊化,其最佳工艺参数为包埋温度40℃,包埋时间50 min,芯壁材比为1∶4 000,此时包埋率可达97.5%.但从经济效益来看,以β-环糊精为壁材更佳,采用包埋络合法制备微胶囊色素,其工艺条件为包埋温度40℃,包埋时间30 min,芯壁材比为1∶250.对油茶籽壳色素微胶囊的稳定性进行研究,结果表明:油茶籽壳色素微胶囊化后,对于热、酸碱性、金属离子、食品添加剂、光照、H₂O₂（氧化剂）、Na₂S₂O₃（还原剂）的稳定性都有显著的提高.更多还原

【Abstract】 On the basis of single factor,the orthogonal experiment method was used to explore the optimum process parameters for preparation of pigment capsules of Camellia oleifera seed hulls.The embedding rate and particle size distribution were used as indicators.The experimental results show that when microcrystalline cellulose is used as the packaging material,the physical adsorption method is used for microencapsulation.The optimal process parameters are:embedding temperature 40 ℃,embedding time 50 min,and core wall ratio was 1∶4 000,the embedding rate was 97.5%.However,from the economic point of view,β-cyclodextrin is better as a wall material,and the microcapsule pigment is prepared by an entrapment method.The process conditions are:embedding temperature 40 ℃,embedding time 30 minutes,and core wall ratio was 1∶250.The stability of Camellia oleoresin pigment microcapsules was studied using enzyme-labeled instrument.The results showed that after the microencapsulation of Camellia pigments by physical methods,the stability of Camellia pigments has been significantly improved.更多还原