大枣色泽与5-羟甲基糠醛含量相关性分析

Analysis on the Correlation between Colors and Contents of 5-Hydroxymethylfurfural in Jujubae Fructus

目的 建立大枣中5-羟甲基糠醛（5-HMF）的高效液相色谱含量测定方法，对大枣色泽与5-HMF含量的相关性进行探索。方法 收集多种色泽的市售大枣及其制品，采用高效液相色谱法测定5-HMF 的含量。结果 大枣制品中5-HMF 的含量明显高于大枣中的含量，大枣中的5-HMF 含量为0.052～6.631 mg/100 g，大枣制品中为3.324～39.71 mg/100 g。随着大枣的色泽逐渐加深，5-HMF 的含量显著升高。结论 本研究建立了大枣及其制品中5-HMF 的高效液相色谱测定方法。大枣中5-HMF 的含量与色泽有关，建议优质大枣中5-HMF 的限量指标为1 mg/100 g。

Objective To establish an HPLC method for content determination of 5-hydroxymethylfurfural(5-HMF) in Jujubae Fructus; To explore the correlation between colors and 5-HMF contents. Methods Some samplesof Jujubae Fructus and the products with different colors were collected. The contents of 5-HMF were determined byHPLC. Results The contents of 5-HMF in Jujubae Fructus products are significantly higher than those in JujubaeFructus.The contents of 5-HMF were among 0.052–6.631 mg/100 g in Jujubae Fructus and 3.324–39.71 mg/100 gin Jujubae Fructus products. As the color gradually deepen, the content of 5-HMF increases significantly.Conclusion An HPLC determination method for 5-HMF in Jujubae Fructus was established. The contents of 5-HMFin Jujubae Fructus and its products are associated with colors. It is recommended that the limit content of 5-HMF inJujubae Fructus is 1 mg/100 g.