Metabolomics for Organic Food Authentication: Results from a Long-term Field Study in Carrots

Overview

Journal Food Chem

Specialties Chemistry
Nutritional Sciences

Date 2017 Sep 7

PMID 28873633

Citations 11

Authors

Elena Cubero-Leon

Olivier De Rudder

Alain Maquet

Affiliations

Soon will be listed here.

Abstract

Increasing demand for organic products and their premium prices make them an attractive target for fraudulent malpractices. In this study, a large-scale comparative metabolomics approach was applied to investigate the effect of the agronomic production system on the metabolite composition of carrots and to build statistical models for prediction purposes. Orthogonal projections to latent structures-discriminant analysis (OPLS-DA) was applied successfully to predict the origin of the agricultural system of the harvested carrots on the basis of features determined by liquid chromatography-mass spectrometry. When the training set used to build the OPLS-DA models contained samples representative of each harvest year, the models were able to classify unknown samples correctly (100% correct classification). If a harvest year was left out of the training sets and used for predictions, the correct classification rates achieved ranged from 76% to 100%. The results therefore highlight the potential of metabolomic fingerprinting for organic food authentication purposes.

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