Quantitative Analysis of Blended Oils Based on Intensity Ratios of Marker Ions in MALDI-MS Spectra

Suying Li, Xuewei Lin, Tsz Tsun Ng, Zhong Ping Yao

Research output: Journal article publicationJournal articleAcademic researchpeer-review


Determination of quantitative compositions of blended oils is an essential but challenging step for the quality control and safety assurance of blended oils. We herein report a method for the quantitative analysis of blended oils based on the intensity ratio of triacylglycerol marker ions, which could be obtained from the highly reproducible spectra acquired by using matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) to directly analyze blended oils in their oily states. We demonstrated that this method could provide good quantitative results to binary, ternary, and quaternary blended oils, with simultaneous quantitation of multiple compositions, and was applicable for quantitative analysis of commercial blended oil products. Moreover, the intensity ratio-based method could be used to rapidly measure the proportions of oil compositions in blended oils, only based on the spectra of the blended oils and related pure oils, making the method as a high-throughput approach to meet the sharply growing analytical demands of blended oils.

Original languageEnglish
Pages (from-to) 15376–15386
Number of pages11
JournalJournal of Agricultural and Food Chemistry
Issue number27
Publication statusPublished - 10 Jul 2024


  • blended oils
  • intensity ratio
  • mass spectrometry
  • matrix-assisted laser desorption/ionization
  • quantitative analysis

ASJC Scopus subject areas

  • General Chemistry
  • General Agricultural and Biological Sciences


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