摘要
试验采用微波法辅助提取茶多酚。在单因素试验基础上,通过响应曲面法优化提取条件,建立多元二次回归方程模型。结果表明,乙醇体积分数、料液比等因素对茶多酚得率的影响不是简单的线性关系。在原料粒度为80目,微波功率为300 W时,当乙醇体积分数为81.27%、料液比(g/mL)1∶35.47、提取温度70℃、提取时间3 min时,茶多酚得率为16.169%,测验值与理论值接近,模型预测可靠。
The tea-polyphenol was extracted by microwave from tea in this study. On the basis of single factor experiment, the extraction conditions were optimized through the response surface method and a multivariete quadratic regression was modeled. The results showed that all of the conditions such as ethanol content, liquid radio were not simple linear relationship. The yield of tea-polyphenols was 16.169%, and the relative error was-0.036% under the optimum conditions such as 80 mesh for particle size, 300 W for microwave power, ethanol content 81.27%, material to liquid ratio 1∶35.47, and extracting 3 minutes under 70 ℃. The model was proved reliable in prediction.
出处
《湖北农业科学》
北大核心
2014年第3期631-634,共4页
Hubei Agricultural Sciences
关键词
茶多酚
微波法
响应曲面法
tea polyphenol
microwave method
response surface methodology
