文献类型：期刊文献

中文题名：脂溶性胭脂虫红色素的制备及表征

英文题名：Preparation and Characterization of Liposoluble Cochineal Dye

作者：胡金燕[1] 郑华[1] 张雯雯[1] 李坤[1] 刘兰香[1] 张弘[1]

第一作者：胡金燕

机构：[1]中国林业科学研究院资源昆虫研究所 国家林业局特色森林资源工程技术研究中心,云南昆明650224

年份：2014

卷号：0

期号：12

起止页码：29-34

中文期刊名：食品科学

外文期刊名：Food Science

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：国家林业公益性行业科研专项(201204602)

语种：中文

中文关键词：胭脂虫红色素;月桂酰氯;脂溶性;改性;表征

外文关键词：cochineal dye;;lauroyl chloride;;liposoluble;;modification;;characterization

分类号：TS264.4

摘要：为拓宽胭脂虫红色素在食品及日化品等领域中的应用,以月桂酰氯为改性试剂对胭脂虫红色素的主要成分——胭脂虫红酸进行分子结构修饰,制得脂溶性胭脂虫红色素。通过单因素试验及优化验证,确定了最佳制备条件为:以1.0 g胭脂虫红色素为原料,N,N-二甲基甲酰胺、月桂酰氯的用量分别为15.3 mL、4.5 g,反应温度42.0℃,反应时长1 h。在此条件下,胭脂虫红色素的回收率为59.35%。通过紫外-可见分光光度计、傅里叶变换红外光谱仪对脂溶性胭脂虫红色素的结构进行表征,表明胭脂虫红色素和月桂酰氯发生了酯化反应,生成了胭脂虫红酸月桂酸酯,并可溶于食用玉米油中,且稳定性较好,20℃条件下溶解度为15.06 g/100 g。
Liposoluble cochineal dye was prepared by esterification of carminic acid as the major component of cochineal dye with lauroyl chloride. The preparation conditions were optimized by single factor design and validated as follows: 1.0 g of cochineal dye, 15.3 mL of dimethyl formamide(DMF), 4.5 g of lauroyl chloride, a reaction temperature of 42.0 ℃and a reaction duration of 1 h. Under these conditions, the recovery of cochineal dye was 59.35%. The structure of the resulting liposoluble cochineal dye was characterized by Fourier transform infrared spectroscopy(FITR) and ultraviolet-visible(UV-Vis) spectroscopy. Results showed that esterification took place between cochineal dye and lauroyl chloride and cochineal laurate was obtained. The product was soluble and stable in edible corn oil with a solubility of 15.06 g/100 g at 20 ℃.