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维生素C在食品中能起抗氧化剂作用,即它在一定时间内能防止油脂变酪。维生素C是水溶性的,为此,笔者首先通过吸收光谱曲线法确定维生素C的水溶液的最大吸收波长为267nm,进而通过工作曲线法快速测定蔬菜水果中维生素C的含量,本方法与常规方法比较,具有快速、准确、简便、试剂易得等优点。方法的RSD为0.75%～0.84%,回收率为99.7%～100.1%。
Vitamin C in the food can play an antioxidant role, that is, it can prevent fat cheese within a certain period of time. Vitamin C is water-soluble, therefore, the author first by absorption spectroscopy curve to determine the maximum absorption wavelength of vitamin C aqueous solution of 267nm, and then through the working curve method for rapid determination of vitamin C content in fruits and vegetables, the method compared with conventional methods , With the advantages of fast, accurate, simple, easy to get reagents. The RSD of the method is 0.75% ~ 0.84%, the recovery rate is 99.7% ~ 100.1%.