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首页> 外文期刊>Radiation Physics and Chemistry >Determination of radiolysis products in gamma-irradiated multilayer barrier food packaging films containing a middle layer of recycled LDPE
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Determination of radiolysis products in gamma-irradiated multilayer barrier food packaging films containing a middle layer of recycled LDPE

机译：含有可回收LDPE中间层的γ辐射多层阻隔食品包装膜中辐射分解产物的测定

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摘要

Volatile and non-volatile radiolysis products and sensory changes of five-layer food packaging films have been determined after gamma irradiation(5-60 kGy).Barrier films were based on polyamide(PA)and low-density polyethylene(LDPE).Each film contained a middle buried layer of recycled LDPE or 100% virgin LDPE(control samples).Data showed that a large number of radiolysis products were produced such as hydrocarbons,alcohols,carbonyl compounds,carboxylic acid.These compounds were detected in the food simulant after contact with all films even at the lower absorbed doses of 5 and 10 kGy.The type and concentration of radiolysis products increased progressively with radiation dose,while no new compounds were detected as a result of the presence of recycled LDPE.In addition,irradiation dose appears to influence the sensory properties of table water in contact with films.
机译：γ（5-60 kGy）辐照后测定了五层食品包装膜的挥发性和非挥发性辐射分解产物以及感官变化。阻隔膜基于聚酰胺（PA）和低密度聚乙烯（LDPE）。在中间埋有一层回收的LDPE或100％原始LDPE（对照样品）。数据显示，产生了大量的辐射分解产物，例如烃，醇，羰基化合物，羧酸，这些化合物在食品模拟物中被检测到。甚至在5和10 kGy的较低吸收剂量下也能与所有薄膜接触。随着辐射剂量的增加，辐射分解产物的类型和浓度逐渐增加，而由于回收的LDPE的存在，未检测到新的化合物。似乎会影响与薄膜接触的食水的感官特性。

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