桔皮色素提取工艺研究

实验以桔皮为研究对象,采用乙醇加热提取桔皮色素,通过单因素实验和正交试验优选提取条件。结果表明:料液比、浸提温度、乙醇浓度、浸提时间这4个单因素的影响顺序为料液比浸提温度乙醇浓度浸提时间,最优提取条件:温度45℃,料液比1∶7,乙醇浓度70%,时间3.5h。通过对此实验的研究,为开发利用以桔皮为原料来提取天然色素,提供了一定的科学依据。

Study on extracting pigment from the orange peel by ethanol

With the orange peel as the research object,the orange peel pigment is extracted through hot ethanol and extraction conditions are optimized through the single factor experiment and the orthogonal test. Research indicates that the influence order of the four single factors is solid-liquid ratio extraction temperature ethanol concentration extraction time,and the optimal extraction conditions are with the temperature of 45℃,the solid-liquid ratio of 1∶ 7,70% of ethanol concentration and the time of 3. 5 hours. The present research provides some scientific foundation for extracting natural pigment with orange peel as material.