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<p>The growing pollution of the World Ocean with plastic poses a real threat to the stability of marine ecosystems. In this context, research into the role of individual systematic groups of aquatic organisms in the degradation and assimilation of polymers is becoming highly relevant, helping marine ecosystems to withstand this pressure. In this study Raman microspectroscopy proved that wide spread plastics, such as polyethylene and polypropylene undergo biodegradation or chemical changes in the sea urchin digestive tract and also in homogenate of the sea urchin digestive tract and starfish hepatic caeca. <i>Strongylocentrotus intermedius</i> sea urchin can ingest polyethylene and polypropylene films, which are transformed into micropaticles with signs of degradation, and then they pass into surrounding environment. The results suggest that marine invertebrates can accelerate the biodegradation of synthetic polymers, thereby having a significant impact on the biogeochemical cycle of plastic.</p>

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Polyethylene and Polypropylene Degradation in the Echinodermata Digestive Organs

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Alexander A. Karpenko,
  • Vyacheslav S. Odintsov,
  • Aleksandra A. Istomina

摘要

The growing pollution of the World Ocean with plastic poses a real threat to the stability of marine ecosystems. In this context, research into the role of individual systematic groups of aquatic organisms in the degradation and assimilation of polymers is becoming highly relevant, helping marine ecosystems to withstand this pressure. In this study Raman microspectroscopy proved that wide spread plastics, such as polyethylene and polypropylene undergo biodegradation or chemical changes in the sea urchin digestive tract and also in homogenate of the sea urchin digestive tract and starfish hepatic caeca. Strongylocentrotus intermedius sea urchin can ingest polyethylene and polypropylene films, which are transformed into micropaticles with signs of degradation, and then they pass into surrounding environment. The results suggest that marine invertebrates can accelerate the biodegradation of synthetic polymers, thereby having a significant impact on the biogeochemical cycle of plastic.