食品科学 ›› 2017, Vol. 38 ›› Issue (10): 162-167.doi: 10.7506/spkx1002-6630-201710027

• 成分分析 • 上一篇    下一篇

基于2 种衍生化方法对牛乳中寡糖的 高效液相色谱-质谱联用分析

陈新新,芦 晶,刘 鹭,逄晓阳,张书文,李 诚,吕加平   

  1. 1.四川农业大学食品学院,四川 雅安 625014;2.中国农业科学院农产品加工研究所,北京 100193
  • 出版日期:2017-05-25 发布日期:2017-05-23
  • 基金资助:
    国家自然科学基金青年科学基金项目(1401514);“十二五”国家科技支撑计划项目(2013BAD18B10); 公益性行业(农业)科研专项(201303085)

Comparative Analysis of Oligosaccharides in Milk Based on Two Different Derivatization Methods by HPLC-Tandem Mass Spectrometry

CHEN Xinxin, LU Jing , LIU Lu, PANG Xiaoyang, ZHANG Shuwen, LI Cheng, Lü Jiaping   

  1. 1. College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; 2. Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Online:2017-05-25 Published:2017-05-23

摘要: 利用Sep-Pak C18柱和石墨化碳柱对已脱脂和除去蛋白质的牛乳进行分离纯化,并采用1-苯基-3-甲基-5-唑啉 酮(3-methyl-1-phenyl-2-pyrazolin-5-one,PMP)和2-氨基吖啶酮(2-aminoacridone,AMAC),2 种衍生化试剂对 其进行衍生化处理,通过高效液相色谱进行优化,AMAC衍生化的结果(约有67 个峰)明显优于PMP衍生化的结 果(约20 个峰),最终确定AMAC为最佳衍生化试剂,并利用最终优化好的高效液相色谱条件,采用高效液相色 谱-串联离子阱飞行时间质谱对牛乳中寡糖进行测定,最终测得7 种乳寡糖并获得该7 种乳寡糖的单糖组成。

关键词: 牛乳寡糖, 1-苯基-3-甲基-5-唑啉酮, 2-氨基吖啶酮, 高效液相色谱-串联离子阱飞行时间质谱

Abstract: In the present study, Sep-Pak C18 and porous graphitized carbon column chromatographies were sequentially used to separate and purify oligosaccharides from defatted and deproteinated milk. After derivatization with phenyl-3- methyl-5-pyrazolone (PMP) or 2-aminoacridone (AMAC), the oligosaccharides were analyzed by high-performance liquid chromatography ion trap time of flight tandem mass spectrometry (HPLC-IT-TOF-MS). AMAC was a better derivatization agent than PMP, since they produced about 67 and 20 chromatographic peaks, respectively. Finally, seven lacto-oligosaccharides were identified under optimized HPLC conditions, and their monosaccharide compositions were determined.

Key words: milk oligosaccharides, 3-methyl-1-phenyl-2-pyrazolin-5-one, 2-aminoacridone, high-performance liquid chromatography ion trap time of flight tandem mass spectrometry (HPLC-IT-TOF-MS)

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