摘要
以桑椹干果为原料,采用酸性乙醇为溶剂超声辅助提取桑椹干果中红色素.在单因素实验的基础上进行正交试验,分别考察乙醇体积分数、液料比、提取温度、提取时间等因素对红色素吸光度的影响.结果表明,超声辅助提取桑椹干果红色素的最佳工艺条件为:乙醇体积分数80%,用柠檬酸调节pH2.0,液料比20 m L/g,提取温度65℃,提取时间90 min.该工艺简单易操作,可以用于桑椹干果红色素的提取.
Red pigment from dried mulberry was extracted by acidic ethanol with ultrasound-assisted technology.The effects of the concentration of ethanol,the liquid-solid ratio,the time and temperature of extraction on the absorbance of red pigment were examined through orthogonal tests. The results have shown that the optimum technological conditions are as follows： the extraction solvent is 80% of ethanol,pH of 2. 0,the liquid-solid ratio 20（ m L/g）,the extraction temperature is at 65 ℃,and the extraction time is 90 min. This extraction process is rational and feasible,and can be used for the extraction of red pigment from dried mulberry.
出处
《南京晓庄学院学报》
2017年第6期75-78,共4页
Journal of Nanjing Xiaozhuang University
关键词
正交试验
超声辅助提取
桑椹干果
红色素
orthogonal test
ultrasound-assisted extraction
dried mulberry
red pigment
