Isotopes Don't Lie, differentiating organic from conventional banana (Musa AAA, Cavendish subgroup) fruits using C and N stable isotopes

Tixier Philippe, Loeillet Denis, Coulis Mathieu, Lescot Thierry, De Lapeyre de Bellaire Luc. 2022. Isotopes Don't Lie, differentiating organic from conventional banana (Musa AAA, Cavendish subgroup) fruits using C and N stable isotopes. Food Chemistry, 394:133491 : 1-7.

Résumé : With the dramatic increase of organic banana production worldwide, it is essential to be able to monitor compliance with organic specifications. While the detection of pesticide fraud is routinely controlled by detecting pesticide residues in organic bananas, the detection of fertilizer fraud is much more complex. We compared the δ13C and δ15N isotopic values of green bananas from organic and conventional farms at seven sites around the world. In our whole dataset, the δ15N values of banana fruits ranged between −1.25 and + 8.91‰. In all sites, δ15N values of organic banana were significantly higher than conventional fruits (mean value of + 5.24‰ and + 2.342‰, respectively). Conversely, the type of fertilization did not significantly alter δ13C values. Our results suggest that it is possible, upon arrival in importing countries, to differentiate bananas grown with synthetic fertilizer from those grown with organic fertilizer.

Mots-clés Agrovoc : Musa (bananes), agriculture biologique, fertilisation, surveillance des cultures, produit chimique, isotope, isotope stable, spectroscopie, agriculture

Mots-clés géographiques Agrovoc : Guadeloupe, Martinique, Côte d'Ivoire, Ghana

Mots-clés complémentaires : Détection

Mots-clés libres : Stable isotopes, Fertilization, Authentication, Isotope ratio mass spectrometry

Classification Agris : F08 - Systèmes et modes de culture
F04 - Fertilisation

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Agences de financement hors UE : Centre de Coopération Internationale en Recherche Agronomique pour le Développement

Auteurs et affiliations

• Tixier Philippe, CIRAD-PERSYST-UPR GECO (FRA) ORCID: 0000-0001-5147-9777 - auteur correspondant
• Loeillet Denis, CIRAD-PERSYST-UPR Systèmes de culture bananes et ananas (FRA)
• Coulis Mathieu, CIRAD-PERSYST-UPR GECO (MTQ) ORCID: 0000-0001-5895-8519
• Lescot Thierry, CIRAD-PERSYST-UPR Systèmes de culture bananes et ananas (FRA)
• De Lapeyre de Bellaire Luc, CIRAD-PERSYST-UPR GECO (FRA) ORCID: 0000-0003-1243-0887

Source : Cirad-Agritrop (https://agritrop.cirad.fr/601436/)

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