title: A comprehensive NMR methodology to assess the composition of biobased and biodegradable polymers in contact with food.
abstract: A nuclear magnetic resonance (NMR) methodology was assessed regarding the identification and quantification of additives in three types of polylactide (PLA) intended as food contact materials. Additives were identified using the LNE/NMR database which clusters NMR datasets on more than 130 substances authorized by European Regulation No. 10/2011. Of the 12 additives spiked in the three types of PLA pellets, 10 were rapidly identified by the database and correlated with spectral comparison. The levels of the 12 additives were estimated using quantitative NMR combined with graphical computation. A comparison with chromatographic methods tended to prove the sensitivity of NMR by demonstrating an analytical difference of less than 15%. Our results therefore demonstrated the efficiency of the proposed NMR methodology for rapid assessment of the composition of PLA.
authors.affiliation: Laboratoire National de Métrologie et d'Essais (LNE), Département Chimie et Physico-Chimie des Matériaux, 78197 Trappes Cedex, France; INRA, UMR1145 Ingénierie Procédés Aliments, 91300 Massy, France.
authors.forename: Audrey
authors.initials: A
authors.lastname: Gratia
authors.affiliation: Université Paris-Sud Institut de Chimie Moléculaire et des Matériaux d'Orsay, ICMMO, UMR CNRS 8182, Equipe de RMN en Milieu Orienté, Bat. 410, 91405 Orsay Cedex, France.
authors.forename: Denis
authors.initials: D
authors.lastname: Merlet
authors.affiliation: INRA, UMR1145 Ingénierie Procédés Aliments, 91300 Massy, France.
authors.forename: Violette
authors.initials: V
authors.lastname: Ducruet
authors.affiliation: Laboratoire National de Métrologie et d'Essais (LNE), Département Chimie et Physico-Chimie des Matériaux, 78197 Trappes Cedex, France. Electronic address: cedric.lyathaud@lne.fr.
authors.forename: Cédric
authors.initials: C
authors.lastname: Lyathaud
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D018857:Food Packaging; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D011091:Polyesters / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D011091:Polyesters; C033616:poly(lactide)
keywords: Additives; Food contact material; Nuclear magnetic resonance spectroscopy; Polylactide; Quantification