期刊论文

Detection of Deep Sea Fish Oil Adulteration by Lipid Analysis Using Ion Trap Mass Spectrometry

中文

食品科学

1002-6630

2018

39

18

199-203

10.7506/spkx1002-6630-201818031

农业部引进国际先进农业科学技术计划(948计划)项目(2016-x29).

本校为第一机构

建立基于高效液相色谱-离子阱质谱脂质识别技术,用于鉴别合成乙酯型和天然甘油酯型深海鱼油。使用反相液相色谱,C_(18)色谱柱,异丙醇和乙腈梯度洗脱分离脂质。使用离子阱质谱数据依赖型二级扫描获得脂质多级碎裂指纹信息。通过总离子流、一级质谱、二级质谱离子树识别脂质指纹信息。识别获知二十二碳六烯酸(docose hexaenoie acid,DHA)和二十碳五烯酸(eicosapentaenoic acid,EPA)在乙酯型深海鱼油中存在方式为CH_3CH_2ODHA和CH_3CH_2O-EPA,而在天然甘油酯型深海鱼油的存在方式为甘油三酯指纹信息。此方法能准确区分乙酯型深海鱼油和甘油酯型深海鱼油。

In this paper, a high performance liquid chromatography coupled to ion trap mass spectrometry (HPLC-ITMS) method was used to identify synthetic ester-type and natural glyceride-type deep sea fish oils by lipid analysis. Lipids were separated by reversed phase HPLC on a C_(18) column using gradient elution with isopropyl alcohol and acetonitrile. Multistage fragmentation fingerprints were acquired by ion trap mass spectrometry under a data-dependent scan mode. The fingerprint information was identified from the total ion current spectra, mass spectra and tandem mass spectra. It was found that d...