Devlieghere F, De Meulenaer B, Sekitoleko P, Estrella Garcia A A, Huyghebaert A
University of Ghent, Faculty of Agricultural and Applied Biological Sciences, Department of Food Technology and Nutrition, Belgium.
Food Addit Contam. 1997 Aug-Oct;14(6-7):671-83. doi: 10.1080/02652039709374579.
In this study several types of bottle materials (glass, PET (polyethylene terephthalate), PC (polycarbonate), HDPE (high density polyethylene), PP (polypropylene) and PVC (polyvinyl chloride)) were evaluated in order to be used as food refillables, comparing the residual chemical contamination after classical caustic washing. Bottles were contaminated with model chemicals (chloroxylenol and d-limonene) and caustic washed with varied process parameters using a simulated laboratory-scale washing procedure. After washing, the chemical-contaminated bottles were filled with water and stored for 28 days at 37 degrees C. The concentrations of the model chemicals in the water after storage were taken as a measure of chemical contamination. The influence of the cleaning parameters (temperature, caustic and commercial additive concentration) was studied using response surface methodology. Washing temperature showed a significant influence on the removal of absorbed chemicals from surfaces compared with the effect of the caustic and especially the additive concentration. Optimization of caustic cleaning for the cleaning process in question led to better cleaning effectiveness, although none of the different washing conditions were able to remove all absorbed chemicals out of the polymeric resins. Commercially available plastic refillables (PET and PC) showed the best chemical rinsability. Glass bottles, however, had in every case the best rinsing characteristics.
在本研究中，对几种类型的瓶材料（玻璃、PET（聚对苯二甲酸乙二酯）、PC（聚碳酸酯）、HDPE（高密度聚乙烯）、PP（聚丙烯）和PVC（聚氯乙烯））进行了评估，以便用作食品可再充装容器，比较了传统苛性碱洗涤后的残留化学污染物。用模拟实验室规模的洗涤程序，将瓶用模型化学品（对氯间二甲苯酚和d-柠檬烯）污染，并在不同工艺参数下进行苛性碱洗涤。洗涤后，将受化学污染的瓶装满水，并在37℃下储存28天。储存后水中模型化学品的浓度用作化学污染的度量。使用响应面方法研究了清洗参数（温度、苛性碱和商业添加剂浓度）的影响。与苛性碱尤其是添加剂浓度的影响相比，洗涤温度对从表面去除吸附的化学品有显著影响。对所讨论的清洗过程进行苛性碱清洗优化可提高清洗效果，尽管不同的洗涤条件均无法将所有吸附的化学品从聚合树脂中去除。市售塑料可再充装容器（PET和PC）显示出最佳的化学可冲洗性。然而，玻璃瓶在每种情况下都具有最佳的冲洗特性。
