蛋白酶胭脂虫天然染料的提取及羊毛织物染色性能研究

利用蛋白酶对胭脂虫干体内的胭脂红酸进行萃取,通过天然染料胭脂虫色素对羊毛织物进行染色.利用蛋白酶进行色素提取,具有温度低、萃取时间短、提取效果好等特点.实验确定提取工艺为:蛋白酶浓度1％,50℃搅拌60 min,调pH值为4,升温至90℃,搅拌60 min.通过对上染工艺中的胭脂虫红色素浓度、染色温度、染色时间、pH值等影响因素进行单因素实验分析,得到了最佳的染色工艺:胭脂虫红色素浓度60％,pH值4,染色温度90℃,染色时间50 min,浴比1:40.

Research on dyeing property of wool fabric based on cochineal carmine extracted by protease

In this thesis,the wool fabrics were dyed with the natural dye of cochineal carmine pigment which was extracted by the method of protease and water from dried body of cochineal.The extraction of cochineal carmine pigment from cochineal with protease had the features of low temperature,short time and high effect.The influence of the concentration of the cochineal carmine,dyeing temperature,dyeing time and pH value was discussed by one-factor analysis.The optimum extraction process was as follow: extracted with protease 1% and pH value 4 for 60 min at 50 ℃,and then increased temperature to 90 ℃ for 60 min.The optimum dyeing condition was as follow: cochineal carmine concentration was 60%,dyeing temperature was 90 ℃,dyeing time was 50 min,pH value was 4 and the liquid ratio was 1∶40.