PDF(Pubmed)
Abstract：
Paper recycling is a viable option for wastepaper management. This study assessed the suitability of recycled papers as a food packaging material. Permanence and durability of three different recycled papers; R1:150 GSM, R2:120 GSM, and R3:100 GSM with aging were evaluated using standard methods. Eventhough opacity increased with aging grammage, burst strength, tensile strength, pH, brightness, and whiteness decreased. Recycled papers failed water absorptiveness test even before aging. Presence of heavy metals in recycled papers were compared with food packaging standards and migration of heavy metals from the packaging to different food types was assessed. Presence of Cu, Zn, Mn, Cr, Cd and Pb were below EC and EPA standards but only Pb and Cd exceeded the EU standard. Migration of Cu, Zn, Mn and Cr were within EPA, EU and EC standards except Pb and Cd with respect to EC standard. Highest migration is associated with foods contain more fatty acids; fast food, sausages and pizza.
摘要：
纸张回收是废纸管理的可行选择。这项研究评估了再生纸作为食品包装材料的适用性。三种不同再生纸的持久性和耐久性；R1：150GSM，R2:120GSM,使用标准方法评估具有老化的R3:100GSM。即使不透明度随着克重的老化而增加，爆裂强度,抗拉强度,pH值,亮度,白度下降。回收纸甚至在老化之前也未通过吸水性测试。将再生纸中重金属的存在与食品包装标准进行了比较，并评估了重金属从包装到不同食品类型的迁移。铜的存在，Zn,Mn,Cr,Cd和Pb低于EC和EPA标准，但只有Pb和Cd超过欧盟标准。铜的迁移,Zn,Mn和Cr在EPA范围内，欧盟和欧共体标准，Pb和Cd除外。迁移量最高的食物含有较多的脂肪酸;快餐,香肠和披萨。
