title: Identification of vegetable oil botanical speciation in refined vegetable oil blends using an innovative combination of chromatographic and spectroscopic techniques.
abstract: European Regulation 1169/2011 requires producers of foods that contain refined vegetable oils to label the oil types. A novel rapid and staged methodology has been developed for the first time to identify common oil species in oil blends. The qualitative method consists of a combination of a Fourier Transform Infrared (FTIR) spectroscopy to profile the oils and fatty acid chromatographic analysis to confirm the composition of the oils when required. Calibration models and specific classification criteria were developed and all data were fused into a simple decision-making system. The single lab validation of the method demonstrated the very good performance (96% correct classification, 100% specificity, 4% false positive rate). Only a small fraction of the samples needed to be confirmed with the majority of oils identified rapidly using only the spectroscopic procedure. The results demonstrate the huge potential of the methodology for a wide range of oil authenticity work.
authors.affiliation: Institute for Global Food Security, Queen's University Belfast, Northern Ireland, UK.
authors.forename: Maria Teresa
authors.initials: MT
authors.lastname: Osorio
authors.affiliation: Institute for Global Food Security, Queen's University Belfast, Northern Ireland, UK.
authors.forename: Simon A
authors.initials: SA
authors.lastname: Haughey
authors.affiliation: Institute for Global Food Security, Queen's University Belfast, Northern Ireland, UK.
authors.forename: Christopher T
authors.initials: CT
authors.lastname: Elliott
authors.affiliation: Institute for Global Food Security, Queen's University Belfast, Northern Ireland, UK. Electronic address: t.koidis@qub.ac.uk.
authors.forename: Anastasios
authors.initials: A
authors.lastname: Koidis
mesh_terms: D002138:Calibration; D002845:Chromatography / Q000379:methods*; D003362:Cost-Benefit Analysis; D005227:Fatty Acids / Q000032:analysis; D005504:Food Analysis; D010938:Plant Oils / Q000737:chemistry*; D015203:Reproducibility of Results; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D013059:Spectrum Analysis, Raman
chemical_list: D005227:Fatty Acids; D010938:Plant Oils
keywords: Authentication; Blend; Labelling; Palm oil; Spectroscopy; Vegetable oil