Rapid authentication of edible oils by matrix-assisted laser desorption/ionization mass spectrometry

Tsz Tsun Ng, Su Ying Li, Cheuk Chi Ng, Zhongping Yao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

We have developed direct analysis of edible oils using matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). The data acquisition can be computer-controlled and MALDI-MS spectra of high quality and high reproducibility can be obtained for edible oil samples, and a preliminary spectral database of edible oils has been set up. Since different types of edible oils have different MALDI-MS spectral patterns, the authenticity of an edible oil sample can be determined by comparing its MALDI-MS spectrum with those of its labeled oil in the established database. Our results revealed that mixed edible oils and recycled cooking oils could be screened out from the pure edible oils after the analysis, since heating and mixing of edible oils could change their MALDI-MS spectral patterns. This method is thus capable of rapidly authenticating edible oils and screening out fraudulent mislabeling of edible oils, with a speed of several minutes for one sample.
Original languageEnglish
Title of host publicationBiotech, Biomaterials and Biomedical - TechConnect Briefs 2017
PublisherTechConnect
Pages1-3
Number of pages3
Volume3
ISBN (Electronic)9780998878201
Publication statusPublished - 1 Jan 2017
Event11th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 20th Annual Nanotech Conference and Expo, and the 2017 National SBIR/STTR Conference - Washington, United States
Duration: 14 May 201717 May 2017

Conference

Conference11th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 20th Annual Nanotech Conference and Expo, and the 2017 National SBIR/STTR Conference
CountryUnited States
CityWashington
Period14/05/1717/05/17

Keywords

  • Direct analysis
  • Edible oils
  • MALDI-MS
  • Rapid authentication
  • Spectral database

ASJC Scopus subject areas

  • Fuel Technology
  • Surfaces, Coatings and Films
  • Biotechnology
  • Fluid Flow and Transfer Processes

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