毛细管气相色谱内标法测定酱油中的乙酰丙酸

Determination of laevulinic acid in soy sauce by capillary gas chromatography internal standard method............

选用正十一烷酸为内标,采用毛细管气相色谱法测定酱 油中的乙酰丙酸,样品回收率在83.4%～91.2％之间,标准 线性关系良好,样品测定的变异系数小。结果表明,采用 该方法具有操作简便、快速、准确等优点。

A simple and rapid method for the determination of laevulinic acid in soy sauce was developed. Selecting undecanoic acid as an internal standard, the average recovery rate was from 83.4% to 91.2%,and its relative standard deviation was 1.60 %. This method has been successfully applied to the determination of real sample.