Chen, Zhi-Feng published the artcileIdentification of recycled polyethylene and virgin polyethylene based on untargeted migrants, Name: Hexyl 2-hydroxybenzoate, the main research area is virgin polyethylene migration gas chromatog mass spectrometer.
With increasing attention to recycled polyethylene (PE), its safety as a food contact material has become non-negligible. In this study, we report an untargeted gas chromatog. coupled to mass spectrometer (GC-MS) anal. combined with multivariate data anal. for discriminating recycled PE from virgin PE. 80 (semi-)volatile migrants were identified, including 10 hydrocarbons, 29 esters, 3 aldehydes, 9 alcs., 2 ethers, 4 acids, 4 benzene derivatives, 4 ketones, 3 amides, 2 piperazine derivatives and 10 unknowns. The hydrocarbons in virgin samples showed a greater variety and abundance than those in recycled samples. Based on orthogonal partial least squares discriminant anal. (OPLS-DA) and non-parametric test, 38 markers were selected to establish a classification model to identify recycled and virgin PE. These markers mainly derived from additives, daily chem. products related and food related input pollutants, most of which were rich in recycled samples. Furthermore, in classification models, linear discrimination anal. (LDA) showed higher stability and predictability than soft independent modeling of class analogy (SIMCA). The average accuracy of training and prediction set reached 100% and 92%, resp., in LDA model. The identification of recycled PE and virgin PE based on migration of untargeted substances is feasible.
Food Packaging and Shelf Life published new progress about Alcohols Role: ANT (Analyte), FFD (Food or Feed Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 6259-76-3 belongs to class esters-buliding-blocks, name is Hexyl 2-hydroxybenzoate, and the molecular formula is C13H18O3, Name: Hexyl 2-hydroxybenzoate.
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