ガスケットから瓶詰食品中に溶出したエポキシ化大豆油(ESBO)およびガスケット中の添加剤分析

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Epoxydized Soybean oil (ESBO) was determined for foods packed in glass jars closed by lids with a gasket. ESBO was found in 4 foods out of 21, at the concentration between 19 and 55mg/kg. Compositional ESBO was found in the gaskets of 15 products out of 21, at the concentration between 20.0 and 43.0%. The foods in which ESBO was found contained fat or oil at the level 2.9 to 13.0%. The fat or oil, whose chemical structures are similar to ESBO, probably promoted migration of ESBO from the gasket. Migration of ESBO reached up to 3200μg/cm^2 per food contact gasket surface area. Non-migration of ESBO into food from the 11 ESBO-containing gaskets was probably due to; 1. no fat (or oil) in food for 5 products which would promote migration, and 2. no food contact to the gasket for the rest 6 products. The latter was demonstrated by the lid-contact food which contained 43 times ESBO of the whole food in the glass jar. Compositional additives other than ESBO was found in the gaskets in which ESBO was not found, at the concentration similar to ESBO; diethylhexyl phthalate was found in the gasket of one product at the concentration of 33.2%, diisononylphthalate was found in one at 32.8%, diisodecylphthalate was found in two at 28.4 and 31.8%, tributyl acetyl citrate was found in one at 18.6% and acetyl fatty acid glycerides were found in the gaskets of 2 products at 25.3 and 30.5%. Acetyl fatty acid glycerides were found in the gaskets of 7 products toghther with other additives, at the concentration between 3.0 and 5.6%. Other than these additives, oleamide and/or erucamide was found in 18 products, at the concentration up to 2.1%.
2009-04-28

ガスケットから瓶詰食品中に溶出したエポキシ化大豆油(ESBO)およびガスケット中の添加剤分析

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