ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
Pre-print.pdf (865.1 kB)
0/0

Determining the Geographical Origin of Crude Palm Oil with the Combined Use of GC-IMS Fingerprinting and Chemometrics

preprint
submitted on 20.04.2020 and posted on 22.04.2020 by Kirstie Goggin, Emma Brodrick, Alfian Nur Wicaksono, James Covington, Antony N Davies, Denis J. Murphy

Current administrative controls used to verify geographical provenance within palm oil supply chains require enhancement and strengthening by more robust analytical methods. In this study, the application of volatile organic compound fingerprinting, in combination with five different analytical classification models, has been used to verify the regional geographical provenance of crude palm oil samples. For this purpose, 108 crude palm oil samples were collected from two regions within Malaysia, namely Peninsular Malaysia (32) and Sabah (76). Samples were analysed by gas chromatography-ion mobility spectrometry (GC-IMS) and the five predictive models (Sparse Logistic Regression, Random Forests, Gaussian Processes, Support Vector Machines, and Artificial Neural Networks) were built and applied. Models were validated using 10-fold cross-validation. The Area Under Curve (AUC) measure was used as a summary indicator of the performance of each classifier. All models performed well (AUC 0.96) with the Sparse Logistic Regression model giving best performance (AUC = 0.98). This demonstrates that the verification of the geographical origin of crude palm oil is feasible by volatile organic compound fingerprinting, using GC-IMS supported by chemometric analysis.

Funding

KESS2 MAXI 20539

History

Email Address of Submitting Author

kirstiegoggin@outlook.com

Institution

University of South Wales

Country

United Kingdom

ORCID For Submitting Author

0000-0002-7510-044X

Declaration of Conflict of Interest

N/A

Version Notes

Version one, no revisions

Exports

Logo branding

Categories

Exports