响应面法优化微波辅助提取辣椒红色素的工艺研究

以红辣椒为原料,丙酮为提取剂,利用微波辅助有机溶剂法提取辣椒红色素,进而通过单因素试验和响应面试验分析微波功率、微波温度、微波时间等工艺参数对提取效率的影响,并优化提取工艺。结果表明,应用微波辅助有机溶剂法提取辣椒红色素的工艺路线是正确可行的,所得产品的光谱特性及特征吸收峰均与辣椒红色素标准图谱基本吻合;微波辅助有机溶剂法提取辣椒红色素的最优工艺条件为:以丙酮为提取剂,微波功率为105 W,微波温度为42℃,微波时间为2 min。在此最优工艺条件下,所得辣椒红色素的吸光度值为0.631。

Optimizing Microwave-assisted Extraction Process for Paprika Red Pigments Using Response Surface Methodology

Hot red peppers are used as raw the material,paprika red pigments were prepared with acetone using the method of microwave-assisted organic solvent extraction.The influences of process parameters,including microwave output power,microwave temperature and microwave time on extraction efficiency of paprika red pigments were compared and analyzed;moreover,the extraction process was optimized via single-factor tests and response surface experiments.The results showed that the method of microwave-assisted organic solvent extraction was an effective and practicable one for paprika red pigments extraction,and the spectral properties and characteristic absorption peak of paprika red pigments were similar to those of standard compound.In addition,the most suitable conditions for paprika red pigments extraction were as follows: acetone was used as the extraction solvent,microwave output power was 105 W,microwave temperature was 42 ℃ and microwave time was 2 min.When the optimal conditions were met,the absorbance value of paprika red pigments reached 0.631.