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  • Title: Production process contamination of citrus essential oils by plastic materials.
    Author: Di Bella G, Saitta M, Lo Curto S, Salvo F, Licandro G, Dugo G.
    Journal: J Agric Food Chem; 2001 Aug; 49(8):3705-8. PubMed ID: 11513651.
    Abstract:
    Twelve samples of plastic materials employed in the industrial extraction of citrus essential oils were analyzed for the presence of phosphorated plasticizers, chloroparaffins, and phthalate esters. The samples tested were found to release these contaminants into the essential oils during the production process. Contamination tests were carried out using dichloromethane and uncontaminated samples of citrus essential oils as extractants. The extracts were analyzed by HRGC/FPD, ECD, and MS. Only one sample of plastic material was found to release triaryl phosphates, 5 samples released chloroparaffins, 6 released diisobutyl phthalate, and 8 released bis(2-ethylhexyl) phthalate. Significantly larger quantities of contaminants were released by new plastic parts than by used plastic parts.
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