大黄鱼微囊饲料原料浆复乳粒径的工艺条件建模

Process Condition Modeling on the Particle Size of Multiple Emulsion of Slurry for Preparing the Micro-encapsulated Diets of Pseudosciaena Crocea

制备大黄鱼仔稚鱼微胶囊饲料过程,为稳定料浆、获得适宜的产品粒度,对原料浆复乳浊液(emulsion)粒径的选配进行了工艺条件建模试验。将液态乳化剂占粉态芯材及壁材的重量百分数(E)、高剪切分散乳化机的转速(Q)和乳化机运转时长(T)共3个因素,作为考察的工艺条件变量;以镜检料浆多重乳浊液的粒径均值(D)作为响应的评估指标。采用均匀设计法做5次试验。对5次试验结果的数据进行逐步回归分析建模得:D(μm)=306.833-25.3E-0.006Q。判明,(E)是影响(D)的第一因数。预测(95%置信度)乳浊液粒径D(μm)值,结果可作为配制大黄鱼微囊饲料相宜料浆工艺条件的依据。

In the preparation of micro-encapsulated diets for the larvaes of Pseudosciaena crocea,in order to stabilize the slurry and obtain the appropriate product particle size,the process condition modeling test was carried out for the selection for the particle size of the multiple emulsion of slurry.The three factors including the weight percentage of liquid emulsifier in the powder core materials and wall materials(E),the speed of the high shear disperse emulsifying machine(Q)and the operating time of the emulsifying machine(T)were taken as the variables of the process conditions.The mean particle size(D)of the multiple emulsions of slurry by microscopy was used as the evaluation index of the response.The uniform design method was used to carry out five tests.And then,after the stepwise regression analysis of the data obtained from the five tests,the modeling results were as follows:D(μm)=306.833-25.3E-0.006Q.It was determined that(E)was the first factor influencing(D).The particle size D(μm)of the emulsion(95%confidence)was predicted,and the results obtained could be used as the basis for the process conditions of the suitable slurry for preparing the micro-encapsulated diets of Pseudosciaena crocea.