杨梅红色素提取工艺中波长的确定  

Determining the wavelength of extraction process of red pigment from myrica rubra sieb et zucc

作　　者：严和平[1,2] 

机构地区：[1]红河学院化学系,蒙自661100 [2]红河学院分析测试中心,蒙自661100

出　　处：《食品科技》2009年第11期187-189,共3页Food Science and Technology

基　　金：红河学院科研项目(XJIY0706)

摘　　要：研究了在杨梅红色素提取过程中不同溶剂和不同酸度溶剂对最大吸收波长的影响。结果表明:以水、乙醇为溶剂提取杨梅红色素时,酸度不会引起最大吸收波长的改变。但以水或乙醇为溶剂提取杨梅红色素,最大吸收波长不同。以盐酸和乙醇的混合溶剂作提取剂时,最大吸收波长随乙醇在溶剂中所占的体积分数不同而改变。增大乙醇在溶剂中的体积分数,波长红移。以盐酸和95%乙醇按1∶1的体积比作溶剂,杨梅红色素的最大吸收波长在526nm。研究杨梅红色素的提取工艺时,应考虑不同溶剂、酸度对最大吸收波长的影响。Determining the maximum absorption wavelength of extraction process of red pigment, the different solvents and the acidity of different solvents were studied in the paper. The test result showed that, Using water, ethanol for the solvent of extraction red pigment, the acidity would not give rise to changes in the wavelength of maximum absorption. However, using water, ethanol for the solvent of extraction red pigment, the maximum absorption wavelength was different. Using hydrochloric acid and ethanol for the mixed solvent, the maximum absorption wavelength will change because ethanol solvent in the percent of the volume is different. Increasing ethanol content of the solvent, the wavelength will shift infrared ray. The maximum absorption wavelength was 526 nm when hydrochloric acid and 95% ethanol were mixed by volume ratio of 1： 1 for solvents. The maximum absorption wavelength should be taken into by the different solvent and the acidity of different solvents in extraction process of the red pigment.

关 键 词：杨梅 红色素 波长 乙醇 

分 类 号：TS202.3[轻工技术与工程—食品科学]