文献类型：期刊文献

中文题名：大叶紫薇花色素提取及其稳定性研究

英文题名：Study on extraction and stability of pigment from lagerstroe mia specious flower

作者：陈洪[1];梁利华[1];谢建英[1]

机构：[1]广东海洋大学应用化学系,湛江524088

年份：2007

卷号：32

期号：8

起止页码：201

中文期刊名：食品科技

外文期刊名：Food Science and Technology

收录：北大核心2004、北大核心

基金：广东省教育厅自然科学基金项目(Z03047)

语种：中文

中文关键词：大叶紫薇花;天然色素;提取;稳定性

外文关键词：lagerstroe mia specious flower; natural pigment; extraction; stability

中文摘要：研究了大叶紫薇花色素的提取方法及其稳定性,考察了pH值、温度、光照时间、氧化剂、还原剂、金属离子、食品添加剂等因素对色素稳定性的影响。结果表明,用1∶1的0.1%盐酸、无水乙醇在室温下浸取5h,提取效果较好。实验结果显示,该色素在250.0nm处有强吸收。大叶紫薇花色素为水溶性、醇溶性色素,酸性条件下稳定,在25～60℃范围内热稳定性较好,该色素对自然光的耐受性较好,耐还原性强,耐氧化性较差。金属离子Mg2+、Ca2+、Al3+、Cu2+、Zn2+、K+对色素色泽无影响,而Fe3+、Sn2+有不良影响。食品添加剂葡萄糖、蔗糖、淀粉、柠檬酸、氯化钠、苯甲酸钠对色素均无不良影响。

外文摘要：Extraction conditions, basic properties and stability of the pigment from lagerstroe mia specious flower were investigated in this paper. It was tested that the effects of pH value, temperature, light, oxidant, reducer, kinds of metal ions, and food additives on stability of the pigment. The result showed that good yield of pigment could be obtained by acid extraction： use the aqueous solution including 0.1% hydrochloric acid and 99.7% alcohol （v：v=1：1） as extractive reagent, extracting for 5 hours under the room temperature. The pigment is classified to water-soluble pigment, alcohol-soluble pigment, for which pH value has significant effects on the tone of pigment. And its maximum absorption wavelength was 250.0nm. It is stable below 60℃ and room-temperature under the acidic condition, but sensitive to oxidant. The pigment has a good resistance to light, reducing agent. Most metal ions （except Fe^3＋ and Sn^2＋） have no bad effects on the pigment. Some common food additives, such as glucose, sucrose, starch, citric acid, salt, sodium benzoate, having no harmful effect on it.