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来源:百度知道 编辑:UC知道 时间:2024/06/14 21:42:17
胭脂虫蜡的分离及纯化
摘要:胭脂虫(Dactylopius coccus Costa)是一种极其珍贵的资源昆虫,具有重大的经济利用价值。本论文以秘鲁产胭脂虫为原料,无水乙醇、石油醚、二甲苯、四氯化碳为试剂,利用现代分离纯化技术和仪器对胭脂虫蜡的分离、提取和纯化进行研究。由两组平行实验研究结果可知在四种试剂中,从产品得率方面考虑,使用无水乙醇提取所得的产品得率是最高的,平均为6.28%,其次是二甲苯和四氯化碳,分别为2.95%和2.93%,而石油醚是最低的,为1.13%。但从蜡的理化性质来看,用无水乙醇处理所得的产品白度值均小于1%,熔点在55℃以下,而其余三种试剂处理所得的产品白度值均大于60%,熔点在70℃以上。从产品得率和理化性质两方面综合考虑,使用二甲苯和四氯化碳提取所得的产品效果较好。
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Cochineal wax separation and purification
Abstract: Dactylopius coccus Costa is an extremely valuable resource insects, is of great economic value. In this paper, to Peru Cochineal production as raw materials, alcohol, petroleum ether, xylene, carbon tetrachloride for the reagents, the use of modern technology and equipment, separation and purification of cochineal wax separation, extraction and purification for research. By two parallel experimental results, we can see in the four reagents, the product yield from consideration, the use of ethanol extract from the product yield is the highest, with an average of 6.28 percent, followed by xylene and carbon tetrachloride , were 2.95 percent and 2.93 percent, and petroleum ether is the lowest, to 1.13 percent. However, the physical and chemical properties of wax, the use of ethanol derived from products to deal with whiteness value of less than 1 percent, below the melting point in the 55 ℃, and the remaining three reagents to de