紫甘蓝色素提取工艺优化及其酸碱指示剂性质  

Optimization of Purple Cabbage Pigment Extraction and Its Acid-base Indicator Properties

作　　者：白晓菲 梁东明 张艳红 闫心怡 韩金龙 弭永生 BAI Xiaofei;LIANG Dongming;ZHANG Yanhong;YAN Xinyi;HAN Jinlong;MI Yongsheng(College of Life Science,Dezhou University,Dezhou 253023;Dezhou Municipal Food and Drug Inspection Center,Dezhou 253015)

机构地区：[1]德州学院生命科学学院,德州253023 [2]德州市食品药品检验检测中心,德州253015

出　　处：《食品工业》2022年第4期67-71,共5页The Food Industry

基　　金：山东省自然科学基金(ZR2020QB172);山东省高等学校科技计划(J16LC59);德州学院人才引进项目(2015kjrc18);大学生创新创业训练计划项目(S202010448024)。

摘　　要：采用市售新鲜紫甘蓝作为原料,通过设计单因素试验和正交试验优化紫甘蓝色素的水浴法提取工艺,对所提取天然色素在不同酸碱性条件下的变色性能进行研究,探索其作为酸碱指示剂的应用性能。结果显示,水浴法最佳提取条件为含30%乙醇溶剂体系、pH 1、温度45℃、时间2 h。所提取的紫甘蓝色素能够对不同酸碱性条件显示良好的变色性能,对pH变化敏感,在pH 1~14的宽范围内具有明显颜色变化,可用于制备在普通实验室中使用的pH试纸,也可作为酸碱滴定的指示剂。Using commercial fresh purple cabbage as material,the water-bath extraction of purple cabbage pigment was optimized by single-factor experiments and orthogonal experiments.The color change performance of the extracted natural pigments under different acid-base conditions and the potential to be used as acid-base indicator were studied.The results showed that the best extraction condition for the water bath method was 30%ethanol solvent system,pH 1,temperature 45℃and time 2 h.The extracted purple cabbage pigment showed sensitively color changing performance in a wide range of pH 1 to 14.The extracted purple cabbage pigment could be used to prepare pH test paper for the usage in ordinary laboratories.When the natural pigment was used as acid-base indicator,it exhibited good property in titration experiments.

关 键 词：紫甘蓝色素 水浴提取 可视化检测 酸碱指示剂 

分 类 号：TQ28[化学工程—有机化工]