Zur Bestimmung von β-Aminocrotonsäureester nach Migration in Lebensmittel |
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Authors: | H Woggon D Jehle W -J Uhde |
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Institution: | 1. Institut für Ern?hrung in Potsdam-Rehbrücke der Deutschen Akademie der Wissenschaften zu Berlin, Deutschland
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Abstract: | β-Aminocrotonic esters are of great importance as stabilizers for the production of clearly transparent food packaging of PVC. For the purpose of studying the migration into foods a thin-layer Chromatographic and a polarographic method were elaborated. The TLC method consists of the visual comparison of the intensity of the spots after treatment with Fast Blue B salt. The polarographic determination is carried out after nitrosation of the stabilizer. By the TLC method 10?7 g of ester per spot are still detectable; the concentration which is still determinable by cathode-ray polarography is 5×10?7 g of ester and by conventional d.c. polarography 5×10?6g of ester per ml of final solution. After extraction with acetonitrile traces of the stabilizer which are migrated into edible oil are still determinable down to 2 ppm by the methods described. |
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