食品科学

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影响精氨酸-还原糖模拟体系荧光性晚期糖基化终末产物形成的因素

夏秋琴,吕丽爽   

  1. 南京师范大学金陵女子学院,江苏 南京 210097
  • 出版日期:2015-08-15 发布日期:2015-08-17

Factors Influencing the Formation of Fluorescent AGEs in Arginine-Reducing Sugar Model System

XIA Qiuqin, LÜ Lishuang   

  1. Ginling College, Nanjing Normal University, Nanjing 210097, China
  • Online:2015-08-15 Published:2015-08-17

摘要:

目的:通过建立精氨酸-还原糖模拟体系,考察影响该体系荧光性晚期糖基化终末产物(advancedglycation end products,AGEs)形成的因素。方法:对建立的精氨酸-还原糖模拟体系,采用荧光光谱法(λex/λem =370 nm/440 nm)检测反应温度、还原糖浓度、pH值、金属离子和抑制剂染料木黄酮对AGEs形成的影响;并分析各个影响因素的作用效果。结果:在单个影响因素:反应温度(121 ℃)、还原糖及其浓度(3 mmol/L的核糖)、pH值(9.2)和金属离子(Fe3+)作用下,产生荧光性AGEs作用效果最强,9 mmol/L抑制剂染料木黄酮对荧光性AGEs的形成有抑制作用。结论:反应时间、反应温度、还原糖种类及其浓度、pH值、金属离子和抑制剂染料木黄酮均对精氨酸-还原糖模拟体系荧光性AGEs的形成有影响,在该模拟体系中,反应时间是影响荧光性AGEs产生最主要的因素,其次为还原糖的种类。

关键词: 荧光性晚期糖基化终末产物, 荧光光谱, 精氨酸-还原糖模拟体系, 染料木黄酮, 还原糖

Abstract:

Purpose: To investigate the factors influencing the formation of fluorescent AGEs in Arg-reducing sugar model
system. Methods: The influencing factors including temperature, reducing sugar concentration, pH, metal ion and genistein
concentration were detected by fluorescence spectrometry, (λex/λem = 370 nm/440 nm). Results: Based on the preliminary
one-factor-at-a-time experiments, a reaction temperature of 121 ℃, addition of 3 mmol/L ribose as a reducing sugar, pH 9.2
and the presence of Fe3+ were the best conditions for the formation of fluorescent AGEs, whereas 9 mmol/L genistein could
effectively inhibit the formation of fluorescent AGEs. Conclusion: Reaction temperature, reducing sugar concentration, pH,
and metal ion have a significant effect on the formation of fluorescent AGEs, and genistein could inhibit the fluorescent
AGEs. Among these influencing factors reaction time has the greatest influence on the formation of fluorescent AGEs,
followed by reducing sugar type.

Key words: fluorescent advanced glycation end products (AGEs), fluorescence spectrometry, arginine-reducing sugar model system, genistein, reducing sugar

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