期刊论文

Optimization of Spray Drying Parameters for the Probiotic Powder Preparation of Bacillus subtilis Prob 1822

中文

食品工业科技

1002-0306

2020

41

2

114-120

10.13386/j.issn1002-0306.2020.02.019

湖南省自然科学基金科教联合基金项目(2017JJ5020)。

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为优化枯草芽孢杆菌喷雾干燥工艺参数,以菌体存活率为评价指标,利用单因素实验研究了保护剂用量、入口温度、进料速率、进风量和出口温度对菌体存活率的影响.结果 表明,进料速率、进风量和出口温度为重要因素;采用中心复合响应面优化技术研究了进料速率(X1)、进风量(X2)、出口温度(X3)对菌体存活率的影响并构建了多元非线性回归方程;方差与回归分析表明,进料速率(X1)与进风量(X2)影响不显著(P＞0 05),出口温度(X3)影响极显著(P＜0.01).喷雾干燥最优参数为进料速率600 mL/h,进风量80 m3/h和出口温度52℃,优化条件下验证试验结果为96.64％±1.43％,与模型预测值基本一致.试验结果表明,热诱激预处理...

To optimize the spray drying parameters,the cell survival rate(CSR)was taken as the evaluation index.The single factor experiments(SFE)was carried out to investigate the effects of protectant amount,inlet temperature,feeding speed,air intake rate and outlet temperature on CSR of Bacillus subtilis(B.subtilis)during spray drying.SFE results indicated that the feeding speed,air intake rate and outlet temperature were the most important factors.And meanwhile,a central composite design response surface methodology(CCD-RSM)was applied to explore the ...