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| Structural Identification of Polyglycerol Fatty Acid Esters |
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| DOI： |
| KeyWord:Fourier transform ion cyclotron resonance mass spectrometry（FT－ICR－MS） nuclear magnetic resonance（NMR） gas chromatography-mass spectrometry（GC－MS） polyglycerol fatty acid esters caramel pigment structural identification |
| Author | Institution |
| LIN Xiao-shan，LUO Hui-tai，HUANG Fang，LIANG Zi-yang，ZHOU Xi，LIANG Zi-hao，ZHU Zhi-xin，DENG Xin，WU Hui-qin |
Guangdong Provincial Engineering Research Center for Quality and Safety of Traditional Chinese Medicine，Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology， Institute of Analysis，Guangdong Academy of Sciences（China National Analytical Center， Guangzhou），Guangzhou ，China |
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| Abstract: |
| A method for the structural identification of polyglycerol fatty acid esters was developed by Fourier transform ion cyclotron resonance mass spectrometry（FT－ICR－MS），nuclear magnetic resonance hydrogen（1H NMR） spectrum and gas chromatography－mass spectrometry（GC－MS）．After the sample was dissolved，it was determined by FT－ICR－MS．According to the accurate molecular ion data，the basic structure of polyglycerol fatty acid ester and the polymerization degree of glycerol were inferred．The basic structure of polyglycerol fatty acid ester and the polymerization degree of glycerol were further verified by 1H NMR．After hydrolysis，the fatty acid part was methylated，then extracted with n-heptane，and finally determined by GC－MS．Based on the above results，the structure of polyglycerol fatty acid ester was determined．This study provides a new idea and method for the structural identification of polymers. |
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