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2020-01-31 - Colloque/Présentation - communication orale - Anglais - page(s)

Delacuvellerie Alice , Benali Samira , Moins Sébastien , Gobert Sylvie, Wattiez Ruddy , "Biodegradable plastics, a sustainable solution for the environment?" in National Symposium for Applied Biological Sciences (NSABS), Gembloux, Belgique, 2020

  • Codes CREF : Microbiologie et protistologie [bacteriol.,virolog.,mycolog.] (DI3130)
  • Unités de recherche UMONS : Protéomie et Microbiologie (S828)
  • Instituts UMONS : Institut des Biosciences (Biosciences)
Texte intégral :

Abstract(s) :

(Anglais) Actually, the main solution for the plastic environmental pollution is the utilisation of biodegradable plastics in place of the non-biodegradable one. The degradation of these polymers is mainly tested into compost condition (70 °C, 90% of degradation in CO2 after 180 days), but what about the marine environment? Bacterial communities able to form biofilm on plastics and degrade them are unknown. The aim of this study is to better understand the interaction of microorganisms with biodegradable plastics and also verify if these polymers are degradable into natural marine conditions, in the Mediterranean Sea (Corsica). Non-biodegradable (PET, LDPE, PS and PVC) and biodegradable polymers (semi-cristallin PLA, amorphous PLA and PBAT) were submerged during 1 month into the sea: (1) on the sediment (8 m depth) and (2) into the water column (4.5 m depth). Chemical analysis (DSC, GPC, ATR-FTIR) were performed on sampled plastics to observe the potential degradation and the bacterial communities present on plastic-biofilm were studied.