期刊
MARINE ENVIRONMENTAL RESEARCH
卷 176, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2022.105605
关键词
Bioplastic; Polyhydroxybutyrate; Polylactic acid; Microplastic; Ecotoxicology; Paracentrotus lividus; Larval bioassay; Additives
资金
- RisBioPlas Project, (Ministry of Science and Innovation -Spanish Agency of Research, AEI) [PCI2020-112110]
- LABPLAS Project (LAnd-Based Solutions for PLAStics in the Sea) - EU H2020 program [101003954]
This study assessed the toxic effects of three innovative bioplastic products on sea urchin larvae. The results showed that PVC toy was the most toxic material, PHB had slight toxicity, and PLA cups and PLA / PHA filament were innocuous. The presence of additives in bioplastics should be carefully addressed to ensure their safety.
In an attempt to ensure that bioplastics, progressively replacing petrochemical-derived plastics, do not release any harmful compound to the environment, the study assessed the toxic effects of three innovative bioplastic products: polyhydroxybutyrate resin (PHB), polylactic acid cups (PLA) and a polylactic acid/polyhydroxyalkanoate 3D printing filament (PLA/PHA), together with a synthetic polyvinyl chloride (PVC) toy in Paracentrotus lividus sea urchin larvae. PVC toy was the most toxic material, likely due to the added plasticizers; remarkably, even if PHB is conceived as a nontoxic polymer, it showed a slight toxicity and Gas Chromatography Mass Spectometry analysis (GC-MS) revealed the presence of a wide range of additives. Conversely, PLA cups and PLA/PHA filament were innocuous for the larvae, a positive outcome for these renewable solutions. Proven that additives are also used in some bioplastic formulations, they should be carefully addressed to ensure that they are as safe as regarded.
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