Riccardi Carmela, Buiarelli Francesca, Castellani Federica, Di Filippo Patrizia, Lorini Laura, Majone Mauro, Matos Mariana, Pomata Donatella, Simonetti Giulia, Sommer Ferreira Bruno, Valentino Francesco
INAIL-DIT, Via Roberto Ferruzzi 38, 00143 Rome, Italy.
Department of Chemistry, University of Rome "La Sapienza", P.le A. Moro 5, 00185 Rome, Italy.
Polymers (Basel). 2020 Mar 14;12(3):659. doi: 10.3390/polym12030659.
The microbial synthesis of polyhydroxyalkanoates (PHA) from organic wastes is a valuable process to valorize available renewable resources, such as food wastes and biological sludge. Bioplastics find many applications in various sectors, from medical field to food industry. However, persistent organic pollutants could be transferred from wastes to the final product. The present paper demonstrates that the use of municipal wastes in PHA production is safe for the environment and human health and provides a polychlorinated biphenyl (PCB) profile in both commercial and waste-based PHA samples. PCB analysis in several PHA samples showed very low concentrations of the target analytes. Commercial PHA samples showed a similar PCB level with respect to PHA samples from municipal waste/sludge and higher than PHA samples from fruit waste. For all analyzed PCBs, detected concentrations were consistently lower than the ones reported in regulatory framework or guidelines.
利用有机废弃物通过微生物合成聚羟基脂肪酸酯（PHA）是一种将可用可再生资源（如食物垃圾和生物污泥）进行增值利用的重要过程。生物塑料在从医疗领域到食品工业等各个部门都有许多应用。然而，持久性有机污染物可能会从废弃物转移到最终产品中。本文证明，在PHA生产中使用城市废弃物对环境和人类健康是安全的，并给出了商业PHA样品和基于废弃物的PHA样品中的多氯联苯（PCB）概况。对多个PHA样品的PCB分析显示，目标分析物的浓度非常低。商业PHA样品的PCB水平与来自城市垃圾/污泥的PHA样品相似，且高于来自水果垃圾的PHA样品。对于所有分析的多氯联苯，检测到的浓度始终低于监管框架或指南中报告的浓度。
