Amadori and Heyns compounds, which play important roles in food flavor, color, and nutritional value, are generated during the Maillard reaction. It is difficult to analyze the compounds simultaneously because the structures of Amadori and Heyns compounds are very similar. To develop a method to distinguish and analyze Amadori and Heyns compounds simultaneously by high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS), studies of mass spectrometry fragments of the Heyns compounds obtained by electrospray ionization were performed and two characteristic fragment ion pairs of Amadori ([AA-H + CH2]+/[M + H]+) and Heyns ([M + H-2H2O–CH3OH-CO]+/[M + H]+) compounds were selected by comparing the cleavage mechanism between them. The calibration curves established with ion pairs of Fru-Pro (fructose-proline), Fru-Leu (fructose-leucine), and Fru-Val (fructose-valine) were used to calculate the content of the corresponding Amadori and Heyns compounds. The method displayed good linearity with correlation coefficients no less than 0.9989. The limit of detection was no more than 0.125 ng/mL. The relative standard deviation was less than 4.31 % and the spiked recoveries ranged from 90.55 % to 110.91 %. The method is accurate and reliable for simultaneously determining Amadori and Heyns compounds in dried raisins and jujubes and was helpful for evaluating and controlling the quality of dried fruits.
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Conflict of Interest
Heng Yuan declares that he has no conflict of interest. Linjuan Sun declares that he has no conflict of interest. Min Chen declares that he has no conflict of interest. Jun Wang declares that he has no conflict of interest.
This work was financially supported by the national science and technology support programs from MOST of China (2012BAD29B04–1).
This article does not contain any studies performed by any of the authors using human participants or animals.
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Yuan, H., Sun, L., Chen, M. et al. The Simultaneous Analysis of Amadori and Heyns Compounds in Dried Fruits by High Performance Liquid Chromatography Tandem Mass Spectrometry. Food Anal. Methods 10, 1097–1105 (2017). https://doi.org/10.1007/s12161-016-0669-1
- Maillard reaction
- Heyns compounds
- Amadori compounds
- Cleavage mechanism
- Dried fruits