A comprehensive NMR methodology to assess the composition of biobased and biodegradable polymers in contact with food

作者：Gratia Audrey; Merlet Denis; Ducruet Violette; Lyathaud Cedric^*

来源：Analytica Chimica Acta, 2015, 853: 477-485.

DOI：10.1016/j.aca.2014.09.046

• Nuclear magnetic resonance spectroscopy
• Additives
• Polylactide
• Food contact material
• Quantification

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.

• 出版日期2015-1-1