食品科学

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花蛤中糖胺聚糖的分离与结构鉴定

花蛤中糖胺聚糖的分离与结构鉴定   

  1. 浙江万里学院生物与环境学院,浙江 宁波 315100
  • 出版日期:2015-03-25 发布日期:2015-03-17
  • 基金资助:

    浙江省科技厅分析测试项目(2012C37026);浙江省现代微生物技术与应用重中之重学科资助项目(ZS2013010)

Separation and Structure of Glycosaminoglycans from the Hard Clam Meretrix meretrix

LIN Jianyuan, JIA Kangming, LI Yao   

  1. College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
  • Online:2015-03-25 Published:2015-03-17

摘要:

目的:以花蛤为提取原料,用多酶水解法提取花蛤中糖胺聚糖,利用红外光谱法对提取物中的硫酸软骨素的结构进行分析。采用超高效液相色谱与电喷雾-质谱联用技术对糖胺聚糖类组分进行研究。方法:色谱柱ACQUITY UPLC BEH Amide(2.1 mm×100 mm,1.7 μm);保护柱ACQUITY UPLC BEH Amide VanGuard(2.1 mm×5 mm,1.7 μm);流动相乙腈-水(体积分数0.2%冰醋酸)的体积比为75∶25;流速0.1 mL/min;进样20 μL。结果:超高效液相色谱-电喷雾-质谱法可快速定性分离糖胺聚糖组分。结论:本实验为糖胺聚糖化合物的结构鉴定提供了一种有效的分析方法。

关键词: 花蛤, 糖胺聚糖, 硫酸软骨素, 超高效液相色谱-电喷雾-质谱, 红外光谱

Abstract:

Objective: To extract glycosaminoglycans (GAGs) from hard clams (Meretrix meretrix) by multi-enzymatic
hydrolysis and to analyze the structure of chondroitin sulfate in the extract by infrared (IR) spectroscopy. Methods: The
components of GAGs were examined by ultra high performance liquid chromatography-electrospray-mass spectrometry
(UPLC-ESI-MS) using an ACQUITY UPLC BEH Amide chromatographic column (2.1 mm × 100 mm, 1.7 μm) and an
ACQUITY UPLC BEH Amide VanGuard guard column (2.1 mm × 5 mm, 1.7 μm). The mobile phase was composed of a
mixture of water and methanol (75:25, V/V) containing 0.2% glacial acetic acid at a flow rate of 0.1 mL/min. The injection
volume was set as 20 μL. Results: Rapid separation of the components was achieved and their structures were determined by
UPLC-ESI-MS. Conclusion: This paper provides an effective method to identify the structure of GAGs.

Key words: hard clams, glycosaminoglycans, chondroitin sulfate, ultra high performance liquid chromatographyelectrospray- mass spectrometry (UPLC-ESI-MS), infrared spectroscopy (IR)

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