微波爐用塑膠容器之衛生安全探討   全文下載

Investigation on the Safety of Plastic Food Containers for Use in Microwave Ovens

本研究主要探討近年來廣為國人使用的微波爐用塑膠容器之衛生安全情形。於台北市各大百貨公司超級市場採購有明顯標示微波爐用之塑膠容器，其材質包刮聚丙烯、結晶性對苯二甲酸乙二酯、聚烯烴化合物及耐熱複合材質等。為了探討微波加熱時的安全性，並與傳統加熱方式進行比較。本研究特依行政院衛生署所訂相同材質之食品器具、容器、包裝衛生標準及檢驗方法，並參考日本食品包裝法規研究會所編日本食品用塑膠容器包裝等規格案中容器類橄欖油溶出試驗法，檢測模擬油脂食品於該類容器內受微波快速加熱至100°C以上高溫時之移行物質溶出情形。另利用光纖測溫儀測量溫度於微波加熱條件之各項溶出試驗中之變化情形。分析結果發現僅一件耐熱複合材質之容器其4%醋酸溶出試驗蒸發殘渣量，不論以恆溫或微波加熱條件浸泡，皆超過衛生標準，其餘均合於衛生標準。另橄欖油溶出試驗依其材質標示之耐熱溫度，經微波不同加熱處理，結果發現除一件聚烯烴材質容器在橄欖油加熱至中心溫度120°C時移行物質溶出量為135 ppm，而120°C持續五分鐘時之溶出量高達850 ppm外，其餘檢體溶出量均在未檢出至67 ppm，且結晶性對苯二甲酸乙二酯材質之溶出量亦較其他材質者為低。

The safety quality of plastic food containers for use in microwave ovens has been investigated. Samples made of polypropylene (PP), crystallized-polypropylene terephthalate(C-PET), polyolefin and composite material were collected from various supermarkets in Taipei. The samples were tested according to the 'Hygiene Standards of Food Utensils, Containers and Packages' with the official methods issued by the Department of Health, except the olive oil leaching test method which was adapted from japanese food regulations. Only one sample made of composite materials was found to violate the Standard because its residue on evaporation of 4% acetic acid leaching test exceeded the level of tolerance.