食品用ポリエチレン, ポリプロピレン及びポリスチレン製品へのガンマ線照射の影響 : 添加剤及びその他の化合物 Effects of Gamma Irradiation on Food Contact Polyethylene, Polypropylene and Polystyrene : Additives and Other Chemicals
The effects of gamma irradiation on additives, oligomers, and other chemicals in food contact polyethylene, polypropylene and polystyrene were investigated. Polyethylene and polypropylene products contained several antioxidants, lubricants and plasticizers. After gamma irradiation, the contents of all the antioxidants significantly decreased. Irgafos 168 disappeared the fastest. Lubricants and plasticizers decreased to some extent or not at all. 2, 4-Di-<I>tert</I>-butylphenol was detected not only after irradiation but also before irradiation, and 1, 3-di-<I>tert</I>-butylbenzene and 2, 6-di-<I>tert</I>-butyl-1, 4-benzoquinone were detected only after irradiation. They were presumed to be degradation products of the irradiation, though the former should be also a degradation product of the manufacturing process. On the other hand, the polystyrene products contained styrene dimers and trimers and their contents did not change after the gamma irradiation.
- 食品照射 = Food irradiation, Japan
食品照射 = Food irradiation, Japan 35(1), 7-14, 2000-09-30