Demertzis P G, Franz R
Fraunhofer-Institute of Food Technology and Packaging, Freising, Germany.
Food Addit Contam. 1998 Jan;15(1):93-9. doi: 10.1080/02652039809374603.
Whilst considerable research has been conducted on the stability of plastics additives during processing, there is, on the other hand, a lack of studies on the stability of the same additives in food simulants in the published literature. In the work presented a systematic study has been undertaken on the stability of five selected commercial plastics additives (Irganox 3114, Irganox 1035, Irganox 245, Irganox 1098 and Irgafos P-EPQ) in the three EU-official aqueous food simulants (distilled water, 3% aq. acetic acid and 15% aq. ethanol) and in an alternative fat simulant (95% aq. ethanol) under two different time/temperature exposure conditions (10 days at 40 degrees C and 1 h at 100 degrees C). To enable quantitative analysis of the additives for this investigation, a simple and rapid HPLC method with UV detection was developed. The results obtained showed that the four Irganox-type additives under investigation were practically stable under the applied exposure conditions in all of the employed food simulants. Only Irganox 3114 exhibited a relatively low degree of instability in the ethanolic food simulants. Concerning Irgafos P-EPQ, a mixture of at least seven constituents, a remarkable degradation in ethanol and acetic acid solutions was observed. The developed HPLC method is also considered to be applicable for stability testing of other Irganox-type additives both in aqueous and fatty food simulants.
虽然已经对塑料添加剂在加工过程中的稳定性进行了大量研究，但另一方面，已发表的文献中缺乏关于这些添加剂在食品模拟物中的稳定性的研究。在本研究中，对五种选定的商用塑料添加剂（抗氧剂3114、抗氧剂1035、抗氧剂245、抗氧剂1098和亚磷酸酯P-EPQ）在三种欧盟官方水性食品模拟物（蒸馏水、3%乙酸水溶液和15%乙醇水溶液）以及一种替代脂肪模拟物（95%乙醇水溶液）中，在两种不同的时间/温度暴露条件（40℃下10天和100℃下1小时）下的稳定性进行了系统研究。为了能够对本研究中的添加剂进行定量分析，开发了一种简单快速的带紫外检测的高效液相色谱法。所得结果表明，所研究的四种抗氧剂型添加剂在所应用的暴露条件下，在所有使用的食品模拟物中实际上是稳定的。只有抗氧剂3114在含乙醇的食品模拟物中表现出相对较低程度的不稳定性。关于亚磷酸酯P-EPQ，它是至少七种成分的混合物，在乙醇和乙酸溶液中观察到明显的降解。所开发的高效液相色谱法也被认为适用于其他抗氧剂型添加剂在水性和脂肪性食品模拟物中的稳定性测试。
