食品科学 ›› 2012, Vol. 33 ›› Issue (4): 162-166.doi: 10.7506/spkx1002-6630-201204033

• 分析检测 • 上一篇    下一篇

高效液相色谱法测定发酵乳中的乳糖、葡萄糖和半乳糖

李 琦,张兰威,张英春,易华西,杜 明,韩 雪,郭春锋,李婧妍,薛超辉   

  1. 哈尔滨工业大学食品科学与工程学院
  • 出版日期:2012-02-25 发布日期:2012-02-14
  • 基金资助:
    黑龙江省国际合作项目(GA06B05);黑龙江省农业成果转化项目(NB08B007)

Determination of Lactose, Glucose and Galactose Contents in Fermented Milk by HPLC

LI Qi,ZHANG Lan-wei,ZHANG Ying-chun,YI Hua-xi,DU Ming,HAN Xue, GUO Chun-feng,LI Jing-yan,XUE Chao-hui   

  1. School of Food Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
  • Online:2012-02-25 Published:2012-02-14

摘要: 利用高效液相色谱法测定发酵乳中乳糖、葡萄糖、半乳糖的含量。样品通过Carrez法处理沉淀蛋白,采用Aminex HPX 87H色谱柱, 5mmol/L H2SO4溶液为流动相,流速0.6mL/min。结果表明:利用该法进行色谱分析各组分达到较好的分离,各糖组分在0.5~12mg/mL范围内呈现良好线性关系,相关系数为0.9986~0.9999(n= 5),样品回收率为96.45%~101.78%;精密度实验表明,各组分峰面积RSD在0.62%~4.21%之间(n= 5);重现性实验表明,各组分含量测定值RSD为1.86%~3.44%。该法测定样品快速、准确、可靠,为发酵乳贮藏过程中关键糖含量的测定提供参考依据。

关键词: 高效液相色谱法, 发酵乳, 乳糖, 葡萄糖, 半乳糖

Abstract: An HPLC method for the determination of lactose, glucose and galactose in fermented milk was established. Proteins from samples were precipitated with Carrez reagent. The chromatographic separation was achieved on an Aminex HPX 87H column using 5 mmol/L H2SO4  as mobile phase at a flow rate of 0.6 mL/min. Good separation was obtained for the analytes. The calibration curves established showed good linearity over the concentration range of 0.5 to 12 mg/mL, with a correlation coefficient of 0.9986 to 0.9999 (n=5). The mean spike recoveries for the sugars in fermented skim milk prepared in our lab varied from 96.45% to 101.78% with a RSD between 0.62% and 4.21% (n=5). The reproducibility RSDs ranged from 1.86% to 3.44%. The method was rapid, accurate and reliable.

Key words: high pressure liquid chromatography (HPLC), fermented milk, lacose, glucose, galactose

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