(CEF). CEF was the main product that was formed by the nonenzymatic glycation of folic acid. For preparation, N2-[1-(carboxyethyl)]folic acid was obtained in high yields when folic acid and dihydroxyacetone (DHA), a sugar degradation product, were heated at 100 degrees C in phosphate buffer. Mixtures of folic acid and different sugars or DHA were heated under variation of reaction time and temperature
叶酸与还原糖(非酶糖基化)在食品加工和制备过程中可能发生的条件下的反应,通过带有二极管阵列检测的高效
液相色谱法进行了研究。在反应混合物中检测到N-(对
氨基苯甲酰基)-
L-谷氨酸,一种公认的氧化产物。此外,分离出新产物并鉴定为N2- [1-(羧乙基)]叶酸(CEF)。CEF是由叶酸的非酶糖基化形成的主要产物。为了制备,将叶酸和糖降解产物二
羟基丙酮(
DHA)在
磷酸盐缓冲液中于100℃加热时,可以高收率获得N2- [1-(羧乙基)]叶酸。在反应时间和温度变化的情况下,加热叶酸和不同
糖类或
DHA的混合物,并定量CEF。