Generation and characterization of secondary nanoplastics and oligomers from PBAT and their toxicity towards the freshwater microalga C. reinhardtii
Zenodo (CERN European Organization for Nuclear Research)2024
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Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Carlos Edo,
Miguel González-Pleiter
Carlos Edo,
Carlos Edo,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Silvia Gómez Kong,
Silvia Gómez Kong,
Silvia Gómez Kong,
Silvia Gómez Kong,
Irene Verdú,
Irene Verdú,
Irene Verdú,
Irene Verdú,
Irene Verdú,
Miguel Tamayo-Belda,
Carlos Edo,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Carlos Edo,
Miguel González-Pleiter
Carlos Edo,
Carlos Edo,
Miguel González-Pleiter
Miguel González-Pleiter
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Carlos Edo,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Silvia Gómez Kong,
Silvia Gómez Kong,
Silvia Gómez Kong,
Silvia Gómez Kong,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Francisco Leganés,
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Miguel González-Pleiter
Miguel Tamayo-Belda,
Carlos Edo,
Miguel González-Pleiter
Carlos Edo,
Francisco Leganés,
Francisco Leganés,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel Tamayo-Belda,
Carlos Edo,
Miguel Tamayo-Belda,
Gerardo Pulido Reyes,
Miguel González-Pleiter
Miguel González-Pleiter
Roberto Rosal,
Gerardo Pulido Reyes,
Gerardo Pulido Reyes,
Irene Verdú,
Gerardo Pulido Reyes,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel Tamayo-Belda,
Carlos Edo,
Miguel González-Pleiter
Miguel Tamayo-Belda,
Miguel Tamayo-Belda,
Miguel González-Pleiter
Carlos Edo,
Miguel González-Pleiter
Gerardo Pulido Reyes,
Carlos Edo,
Francisco Leganés,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel Tamayo-Belda,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Irene Verdú,
Irene Verdú,
Carlos Edo,
Irene Verdú,
Irene Verdú,
Irene Verdú,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Miguel González-Pleiter
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Francisco Leganés,
Roberto Rosal,
Roberto Rosal,
Roberto Rosal,
Roberto Rosal,
Roberto Rosal,
Roberto Rosal,
Miguel González-Pleiter
Miguel González-Pleiter
Roberto Rosal,
Roberto Rosal,
Francisca Fernández-Piñas,
Miguel González-Pleiter
Francisca Fernández-Piñas,
Miguel González-Pleiter
Francisca Fernández-Piñas,
Francisco Leganés,
Francisca Fernández-Piñas,
Francisca Fernández-Piñas,
Miguel González-Pleiter
Francisca Fernández-Piñas,
Francisca Fernández-Piñas,
Francisca Fernández-Piñas,
Miguel González-Pleiter
Miguel González-Pleiter
Miguel González-Pleiter
Roberto Rosal,
Roberto Rosal,
Francisca Fernández-Piñas,
Francisca Fernández-Piñas,
Roberto Rosal,
Roberto Rosal,
Francisco Leganés,
Francisca Fernández-Piñas,
Miguel González-Pleiter
Francisca Fernández-Piñas,
Miguel González-Pleiter
Francisco Leganés,
Francisco Leganés,
Miguel González-Pleiter
Summary
Researchers generated and characterized secondary nanoplastics and oligomers from biodegradable PBAT plastic to assess their ecotoxicological effects compared to conventional plastic counterparts. The study found that biodegradable plastics also release nanoscale particles with measurable toxic effects.
Study Type
Environmental
The production of biodegradable plastics has increased in recent years, as they are proposed as a substitute for conventional plastics. The ecotoxicological effects of primary nanoplastics (NPLs) have been extensively studied in the literature. However, little is known about the effects of biodegradable plastics, secondary NPLs, and oligomers generated by their degradation. In this study, we further developed a high-throughput protocol for the obtention of elevated quantities of isolated fractions of secondary NPLs and oligomers from commercial poly (butylene-adipate-co-terephthalate; PBAT), a biodegradable plastic frequently used in agriculture mulching. Secondary PBAT nanoplastics (PBAT-NPLs) and Secondary PBAT oligomers (PBAT-Oligs) were obtained by mechanical breakdown and photooxidation of pristine PBAT microbeads. We have also compared the physicochemical properties and toxicological effects of secondary NPLs and oligomers from photooxidized and non-photoxidized PBAT on the green microalga Chlamydomonas reinhardtii, which serves as an important model organism in freshwater ecosystems due to its role as a primary producer. To characterize the physicochemical properties of secondary PBAT-NPLs and PBAT-Oligs, techniques such as High-pressure liquid chromatography (HPLC), matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) dynamic light scattering (DLS), electrophoretic light scattering (ELS), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), Fourier transform infrared spectroscopy (FTIR), and dry weight measurement were employed. To investigate the effects of the secondary PBAT-NPLs and PBAT-Oligs, C. reinhardtii was exposed to concentrations ranging from 0.01 to 10 mg/L of both materials. The following parameters were assessed: cellular growth, contents of photosynthetic pigments, ROS generation, and membrane potential. Results showed that secondary PBAT-NPLs and PBAT-Oligs can trigger ROS overproduction, and cause membrane depolarization. However, in the short term, no differences between control and treatment groups were shown in cellular growth and photosynthetic pigments after exposure. Taken together, this study aims to unravel the underlying mechanisms governing the potential biological impact of secondary biodegradable NPLs and oligomers. Also see: https://micro2024.sciencesconf.org/557037/document