| 水溶性红曲黄色素的表征及其稳定性 |
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| 引用本文： | 苏金为,周碧青.水溶性红曲黄色素的表征及其稳定性[J].天然产物研究与开发,1999,11(4):57-61. |
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| 作者姓名： | 苏金为 周碧青 |
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| 作者单位： | 福建农业大学!福州350002 |
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| 基金项目： | 福建省计划委员会资助项目 |
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| 摘 要： | 以含硫化合物还原红曲色素,红斑素和红曲红素分子中的环羰基还原成羟基,得到水溶性红白曲黄色素.以 UV-Vis、IR和(?)H-~(13)CNMR对其结构进行了表征.该色素的吸光度随pH增大而略呈上升趋势,避光可明显提高其稳定性.除Mg~(2 )在pH9下使其溶液产生沉淀外,Sn~(2 )、Ca~(2 )、Fe~(3 )和AI~(3 )均不影响其稳定性.不同pH和温度下加热实验结果表明,酸性条件对其热稳定性影响较大.
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| 关 键 词： | 红曲黄色素 水溶性 表征 稳定性 |
CHARACTERIZATION AND STABILITIES OF WATER SOLUBLE MONASCUS YELLOW PIGMENT |
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| Su Jinwei,Zhou Biqing,Peng Shiyao,Gan Chunji.CHARACTERIZATION AND STABILITIES OF WATER SOLUBLE MONASCUS YELLOW PIGMENT[J].Natural Product Research and Development,1999,11(4):57-61. |
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| Authors: | Su Jinwei Zhou Biqing Peng Shiyao Gan Chunji |
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| Abstract: | The water soluble Monascus yellow pigment was prepared by reducing the cyclocarbonyl of monascorubrin and rubropunctatin to hydroxyl with sulphuric compounds. Its structure was characterized by UV-Vis,lR and 1H-13C NMR. The absorbance of the pigment was increased slightly with pH. Taking shelter from the light would improve its stability. The stability was not effected by Sn2 ,Ca2 , Fe3 ,and A13 , while precipitation was produced by Mg2 under pH 9. The acid effect was more than other conditions in thermal stability under different pH and temperature. |
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| Keywords: | Monascus yellow pigment water soluble characterization stability |
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