Abstract: A method for the determination of fructooligosaccharides in modified milk by high performance liquid chromatography (HPLC) was developed. Fructooligosaccharides were extracted with water. The analysis was performed on a NH2 column using 70% acetonitrile in water as the mobile phase. The recoveries of fructooligosaccharides at four spiked levels between 20 and 500 mg/100 g ranged from 80.2% to 107.1%. The limit of quantification was 20 mg/100 g. This method is accurate, simple and suitable for the analysis of fructooligosaccharides in modified milk.

Key words: high performance liquid chromatography (HPLC); fructooligosaccharides; modified milk

摘要： 建立调制乳中低聚果糖高效液相色谱的测定方法.采用水作为提取剂,乙腈沉淀蛋白,氨基色谱柱分离,流动相为70％乙腈溶液,示差检测器检测.每100 g调制乳中低聚果糖添加量为20～500 mg时,回收率为80.2％～107.1％,定量检出限为20 mg/100g.该方法操作简便、检测准确,可用于调制乳中低聚果糖的检测.

关键词: 高效液相色谱；低聚果糖；调制乳