| 龙眼壳黄色素的提取及其稳定性研究 |
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| 引用本文： | 许光妹,刘晓珠,黄俊生.龙眼壳黄色素的提取及其稳定性研究[J].韩山师范学院学报,2013(3):74-80. |
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| 作者姓名： | 许光妹 刘晓珠 黄俊生 |
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| 作者单位： | 韩山师范学院化学系,广东潮州521041 |
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| 摘 要： | 以龙眼壳为原料提取黄色素,并对该色素的稳定性进行研究.实验结果表明,该色素最佳提取工艺为:提取剂为乙酸乙酯,浸提料液比为1∶30,温度为40℃,时间为3 h.稳定性研究表明,该色素对光、热和还原剂的稳定性良好.食品添加剂和金属离子对色素的影响较小,其中柠檬酸,山梨酸钾对色素有增色效应,因此其用量不宜过多;Fe3+、Zn2+、Al3+对色素影响较大.该色素耐酸、不耐碱,在pH值接近10时,色素明显变色且有少量的沉淀物.
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| 关 键 词： | 龙眼壳 黄色素 提取 稳定性 |
A Research of the Extraction and the Stability of Yellow Pigment From Longan Shell |
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| XU Guang-mei,LIU Xiao-zhu,HUANG Jun-sheng.A Research of the Extraction and the Stability of Yellow Pigment From Longan Shell[J].Journal of Hanshan Teachers College,2013(3):74-80. |
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| Authors: | XU Guang-mei LIU Xiao-zhu HUANG Jun-sheng |
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| Institution: | (Department of Chemistry, Hanshan Normal University, Chaozhou 521041, China) |
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| Abstract: | In this thesis,we study the extraction and the stability of the yellow pigment from longan shell. The result of this experiment shows that the optimum extracting process is to use ethyl acetate with the temperature of 40 ℃, time for 3 hours and the ratio of raw materials 1 ： 30. Stability research shows that the pigment has good lightfastness, thermal stability and reducibility stability. Food additives and metal ion have a little effect on the pigment. However, citric acid and potassium sorbate have sensitizing effect, so these food additives shouldn＇ t be used too much. What＇ s more, Fe^3＋ , Zn^2＋ and Al^3＋ have a greater influence on the pigment. The pigment shows strong acid resistance, but alkali resistance intolerance. When the pH is about 10, the colour of pigment changes obviously and has a small amount of sediment. |
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| Keywords: | longan shell yellow pigment extraction stability |
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