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

被引:10
作者
Gratia, Audrey [1 ,2 ]
Merlet, Denis [3 ]
Ducruet, Violette [2 ]
Lyathaud, Cedric [1 ]
机构
[1] Lab Natl Metrol & Essais LNE, Dept Chim & Physicochim Mat, F-78197 Trappes, France
[2] INRA, UMR1145, F-91300 Massy, France
[3] Univ Paris 11, Inst Chim Mol & Mat Orsay, Equipe RMN Milieu Oriente, UMR CNRS 8182, F-91405 Orsay, France
关键词
Nuclear magnetic resonance spectroscopy; Additives; Polylactide; Food contact material; Quantification; SYNTHETIC PHENOLIC ANTIOXIDANTS; PACKAGING MATERIALS; BARRIER PROPERTIES; SIZE-EXCLUSION; PET BOTTLES; DEGRADATION; H-1-NMR; IDENTIFICATION; POLYOLEFINS; TEMPERATURE;
D O I
10.1016/j.aca.2014.09.046
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
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. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:477 / 485
页数:9
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