食品科学

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PMP-HPLC-MSn法分析弱酸降解鲍鱼性腺多糖产生的寡糖

鲁姣姣,艾春青,温成荣,徐 鑫,张 豹,宋 爽   

  1. 1.大连工业大学食品学院,辽宁 大连 116034;2.国家海洋食品工程技术研究中心,辽宁 大连 116034;
    3.海洋活性多糖开发应用技术国家地方联合工程实验室,辽宁 大连 116034
  • 出版日期:2016-08-25 发布日期:2016-08-30
  • 通讯作者: 宋 爽
  • 基金资助:

    国家自然科学基金青年科学基金项目(31301431;31501439);
    辽宁省农业领域青年科技创新人才培养计划项目(2014002);辽宁省教育厅一般项目(L2014222)

Analysis of Oligosaccharides Released from Weak Acid Hydrolysis of Abalone Gonad Polysaccharide Using PMP-HPLC-MSn

LU Jiaojiao, AI Chunqing, WEN Chengrong, XU Xin, ZHANG Bao, SONG Shuang   

  1. 1. School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China; 2. National Engineering Research
    Center of Seafood, Dalian 116034, China; 3. National and Local Joint Engineering Laboratory for Marine Bioactive Polysaccharide
    Development and Application, Dalian 116034, China
  • Online:2016-08-25 Published:2016-08-30
  • Contact: SONG Shuang

摘要:

为考察鲍鱼性腺硫酸多糖(abalone gonad sulfated polysaccharide,AGSP)在弱酸降解过程中产生的寡糖,对不同酸浓度的降解产物1-苯基-3-甲基-5-吡唑啉酮(1-phenyl-3-methyl-5-pyrazolone,PMP)衍生化后,进行高效液相色谱-质谱(high performance liquid chromatography-mass spectrometry,HPLC-MSn)法检测。在AGSP的弱酸降解产物中发现了2 种二糖(disaccharides,DS1、DS2)和1 种四糖(tetrasaccharide,TS)。2 种二糖均是由己糖醛酸通过糖苷键连于己糖,其中DS2的结构确定为β-GlcA(1→2)-Man,而TS是由2 个DS2连接而成。在100 ℃加热1 h的条件下,在0.1~2.0 mol/L的三氟乙酸浓度范围内,这3 种寡糖的产率都随着酸浓度的增加呈升高趋势。

关键词: 鲍鱼, 多糖, 酸降解, 质谱, 寡糖

Abstract:

In order to investigate oligosaccharides released from abalone gonad sulfated polysaccharide (AGSP) through
weak acid hydrolysis, hydrolysates obtained at different acid concentrations were labeled with 1-phenyl-3-methyl-5-
pyrazolone (PMP), and then analyzed by high performance liquid chromatograph-mass spectrometry (HPLC-MSn). Two
disaccharides (DS1 and DS2) and one tetrasaccharide (TS) were found in the AGSP hydrolysates. The two disaccharides
were composed of a hexuronic acid linked to a hexose through a glucosidic bond. DS2 was deduced as β-GlcA(1→2)-Man,
and TS was proposed as a dimer of DS2. In hydrolysis reaction with 0.1–2.0 mol/L trifluoroacetic acid at 100 ℃ for 1 h, the
yields of the three oligosaccharides all increased with increasing acid concentration.

Key words: abalone, polysaccharide, acid hydrolysis, mass spectrometry, oligosaccharide

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