阿魏酸与咖啡酸对丙烯酰胺形成及消减的影响

探讨阿魏酸与咖啡酸在美拉德模拟体系中对丙烯酰胺形成和消减的影响。结果表明:在天冬酰胺/葡萄糖模拟反应体系中,阿魏酸与咖啡酸的添加量为250 mmol/L和25mmol/L时可抑制丙烯酰胺的形成,而二者浓度低于2.5mmol/L时则促进丙烯酰胺的形成。将阿魏酸与咖啡酸分别与丙烯酰胺单独高温处理,发现2种酚酸对丙烯酰胺都具有消减效果,但效果不明显,因此判定阿魏酸与咖啡酸对美拉德模拟体系中丙烯酰胺含量的影响主要作用于丙烯酰胺的形成阶段。另外,酸性条件下,醌型酚酸比酚型酚酸对丙烯酰胺的消减作用更大,而在中性条件下,酚型酚酸的消减作用更强。

Effect of ferulic acid and caffeic acid on acrylamide formation and elimination

In this study, caffeic and ferulic acids were used to test the effect on acrylamide formation and elimination in model reaction systems. In asparagine/glucose reaction system, addition of caffeic and ferulic acid at the concentration of 25 mmol/L and 250 mmol/L inhibited acrylamide formation. However, they increased acrylamide formation below 2.5 mmol/L. It was found that both of phenolic acids increased acrylamide elimination when ferulic acid or caffeic acid were heated with acrylamide, but the effect is not obvious, so effect of caffeic acid and ferulic acid influenced on acrylamide content in Maillard reaction system mainly influence on acrylamide formation stage. Otherwise, The acrylamide elimination of quinone type of phenolic acid is higher than phenol type in the acidic condition while phenol type is higher in neutrallty condition.