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CIeaD: A Complementary CID and EAD Mass Spectral Library for Phytochemicals.

Yatendra Singh1, Paul C Norris2, Sibesh Maharjan1

  • 1Department of Biology, University of Mississippi, Oxford, Mississippi 38677, United States.

Journal of the American Society for Mass Spectrometry
|December 1, 2025
PubMed
Summary
This summary is machine-generated.

A new spectral library, CIeaD (Collision-Induced and Electron-Activated Dissociation), enhances plant metabolite identification. It provides complementary CID and EAD spectra for 2,305 phytochemicals, improving accuracy in plant metabolomics research.

Keywords:
collision-induced dissociationelectron-activated dissociationmass spectrometrymetabolomicsphytochemicals

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Area of Science:

  • Plant Science
  • Analytical Chemistry
  • Biochemistry

Background:

  • Metabolomics research is hindered by the vast structural diversity of plant metabolites.
  • Existing spectral libraries have limited coverage, complicating metabolite identification.
  • Accurate identification of phytochemicals is crucial for understanding plant biology and chemistry.

Purpose of the Study:

  • To develop a comprehensive and open-access spectral library for plant metabolite identification.
  • To address the limitations of existing libraries by including diverse fragmentation data.
  • To facilitate accurate and efficient analysis in plant metabolomics.

Main Methods:

  • Developed CIeaD (Collision-Induced and Electron-Activated Dissociation), a novel spectral library.
  • Acquired high-resolution mass spectrometry data for 2,305 phytochemicals.
  • Utilized a dual fragmentation mechanism (CID and EAD) in both positive and negative ion modes.

Main Results:

  • The CIeaD library contains complementary CID and EAD spectra for 2,305 plant metabolites.
  • Spectra cover major plant metabolite classes with high resolution.
  • The library captures a wide range of diagnostic ions through dual fragmentation.

Conclusions:

  • CIeaD significantly enhances plant metabolite identification capabilities.
  • The open-access library supports broader research in plant metabolomics.
  • This resource aids in the structural elucidation of diverse phytochemicals.