A comprehensive mechanism of polyester enzymatic depolymerization: A novel singular key parameter for streamlined eco-design.

Plastic pollution persists due to polymers' resistance to depolymerization, making eco-design and enzymatic recycling essential for sustainability. However, understanding plastic depolymerization is complex, and studies often separate enzymatic from non-enzymatic degradation, despite their interconnectedness in practice. This study aims to simplify this process, unifying key factors into a single mechanism using polylactide (PLA) as a model.

Long-term immersion of compostable plastics in marine aquarium: Microbial biofilm evolution and polymer degradation.

The best-selling compostable plastics, polylactic acid (PLA) and polybutylene adipate-co-terephthalate (PBAT), can accidentally end up in the marine environment due to plastic waste mismanagement. Their degradation and colonization by microbial communities are poorly documented in marine conditions. To better understand their degradation, as well as the dynamics of bacterial colonization after a long immersion time (99, 160, and 260 days), PBAT, semicrystalline, and amorphous PLA films were immersed in a marine aquarium.

Coculture of and Based on Metabolic Cross-Feeding Modulates Lipopeptide Production.

Cocultures have been widely explored for their use in deciphering microbial interaction and its impact on the metabolisms of the interacting microorganisms. In this work, we investigate, in different liquid coculture conditions, the compatibility of two microorganisms with the potential for the biocontrol of plant diseases: the fungus IHEM5437 and the bacterium GA1 (a strong antifungal lipopeptide producing strain). While the overgrew the in a rich medium due to its antifungal lipopeptide production, a drastically different trend was observed in a medium in which a nitrogen nutritional dependency was imposed.

From rivers to marine environments: A constantly evolving microbial community within the plastisphere.

Plastics accumulate in the environment and the Mediterranean Sea is one of the most polluted sea in the world. The plastic surface is rapidly colonized by microorganisms, forming the plastisphere. Our unique sampling supplied 107 plastic pieces from 22 geographical sites from four aquatic ecosystems (river, estuary, harbor and inshore) in the south of France in order to better understand the parameters which influence biofilm composition.

Microbial biofilm composition and polymer degradation of compostable and non-compostable plastics immersed in the marine environment.

Different plastic types considered as compostable are found on the market such as petro-based (e.g., polybutylene adipate terephthalate (PBAT)) or bio-based plastics (e.

The plastisphere in marine ecosystem hosts potential specific microbial degraders including Alcanivorax borkumensis as a key player for the low-density polyethylene degradation.

Most plastics are released to the environment in landfills and around 32% end up in the sea, inducing large ecological and health impacts. The plastics constitute a physical substrate and potential carbon source for microorganisms. The present study compares the structures of bacterial communities from floating plastics, sediment-associated plastics and sediments from the Mediterranean Sea.