Paper spray mass spectrometry profiling of olive oil unsaponifiable fraction for commercial categories classification

Ines Rosita Talarico; Lucia Bartella; Priscilla Rocio-Bautista; Leonardo Di Donna; Antonio Molina-Diaz; Juan F Garcia-Reyes

doi:10.1016/j.talanta.2023.125152

Paper spray mass spectrometry profiling of olive oil unsaponifiable fraction for commercial categories classification

Talanta. 2024 Jan 15:267:125152. doi: 10.1016/j.talanta.2023.125152. Epub 2023 Sep 7.

Authors

Ines Rosita Talarico¹, Lucia Bartella², Priscilla Rocio-Bautista³, Leonardo Di Donna¹, Antonio Molina-Diaz⁴, Juan F Garcia-Reyes⁵

Affiliations

¹ Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy; QUASIORA Laboratory, Agrinfra Research Net, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy.
² Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy; QUASIORA Laboratory, Agrinfra Research Net, Università della Calabria, Via P. Bucci, Cubo 12/D, Rende, CS, I-87036, Italy. Electronic address: lucia.bartella@unical.it.
³ Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, Campus las Lagunillas S/n, 23071, Jaén, Spain.
⁴ Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, Campus las Lagunillas S/n, 23071, Jaén, Spain; University Research Institute for Olives Grove and Olive Oil, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain.
⁵ Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, Campus las Lagunillas S/n, 23071, Jaén, Spain; University Research Institute for Olives Grove and Olive Oil, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain. Electronic address: jfgreyes@ujaen.es.

PMID: 37688893
DOI: 10.1016/j.talanta.2023.125152

Abstract

A new method for a fast molecular profiling of olive oil unsaponifiable fraction has been developed. This approach, based on paper spray mass spectrometry, allows obtaining MS data with only a few minutes of analysis and without significant solvent and disposable consumption. Tandem mass spectrometry and high-resolution mass spectrometry experiments have been performed to identify the main ions detected. The MS data coming from the analyses of sixty-three samples of three different olive oil categories: extra virgin olive oil (EVOO), virgin olive oil (VOO), and pomace olive oil (POO), have been used to test the discriminative potential. Both unsupervised (PCA and HCA) and supervised (kNN and LDA) chemometric procedures have been applied with good results in prediction. The same approach was tested using direct infusion mass spectrometry data to confirm the ability of paper spray fingerprinting to classify different olive oils correctly.

Keywords: Chemometrics; Mass spectrometry; Olive oil; Paper spray ionization; Unsaponifiable fraction.

MeSH terms

Food Analysis* / methods
Ions
Olive Oil / chemistry
Plant Oils / analysis
Tandem Mass Spectrometry*

Substances

Olive Oil
Ions
Plant Oils