We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Estudio de las interacciones entre los miembros de un consorcio bacteriano e implicaciones de las mismas en la biodegradación de plásticos
AI summary Read the abstract
Bacterial consortium (Pseudomonas + Bacillus) degrades LLDPE far more effectively than pure cultures, especially with glucose as cometabolic substrate.
El aumento en la producción de plástico y la acumulación de sus residuos en los ecosistemas supone un grave problema a nivel global. Los métodos físico-químicos que se emplean actualmente para el tratamiento de los residuos plásticos resultan ineficientes por lo que es necesaria la búsqueda de alternativas sostenibles para acabar con este tipo de contaminación. Un enfoque biotecnológico para solucionar este problema es el empleo de consorcios microbianos, cuya eficiencia en la biodegradación de contaminantes es mayor que el de sus cultivos puros. En este trabajo, se pretenden caracterizar las relaciones existentes entre los dos miembros, Pseudomonas alloputida REBP7 y Bacillus subtilis RBM2, de un consorcio microbiano capaz de biodegradar polietileno lineal de baja densidad (LLDPE) según estudios previos. También se pretende encontrar cual es el medio de cultivo óptimo para la degradación de este polímero plástico. Para ello se realizaron diversos ensayos para comprobar las posibles interacciones positivas y negativas entre los dos microorganismos del consorcio. Se realizó una comparativa entre la eficiencia en la degradación de plástico entre el consorcio y los cultivos puros de estos dos microorganismos en medios de cultivo con LLDPE como única fuente carbonada y con distintos sustratos cometabólicos, para comprobar su influencia en la degradación del LLDPE. Los resultados mostraron que, aunque existían ciertas interacciones negativas entre los miembros, estas no eran relevantes para el desarrollo del consorcio. Estos resultados se verificaron cuando se comprobó que el consorcio mostraba una capacidad de degradación del LLDPE muchísimo mayor que los cultivos puros, sobre todo en aquellos medios de cultivo que incorporaban como sustrato cometabólico tan solo glucosa. The increase in plastic production and the accumulation of this waste in ecosystems is a serious global problem. The physical-chemical methods currently used to treat this plastic waste are inefficient, so it is necessary to search for sustainable alternatives to end this type of pollution. A biotechnological approach to solve this problem is the use of microbial consortia, whose efficiency in the biodegradation of pollutants is higher than the use of pure cultures. In this work, we intend to characterize the relationships between the two members, seudomonas alloputida REBP7 and Bacillus subtilis RBM2, of a microbial consortium capable of biodegrading linear low density polyethylene (LLDPE) according to previous studies. It is also intended to find the optimal culture medium for the degradation of this plastic polymer. For this purpose, several tests were carried out to check the possible positive and negative interactions between the two microorganisms in the consortium. A comparison between the efficiency in plastic degradation between the consortium as pure cultures of these two microorganisms in culture media with LLDPE as the only carbon source and with different cometabolic substrates was carried out to check their influence on the degradation of LLDPE. The results showed that, although there were some negative interactions between the members, these were not relevant for the development of the consortium. These results were verified when it was found that the consortium showed a much higher LLDPE degradation capacity than pure cultures, especially in those culture media that incorporated only glucose as a cometabolic substrate.
More Papers Like This
Biodegradation of PET Microplastics by Bacteria
AI summary Read the abstract
This Spanish-language study tested the ability of common bacterial strains (E. coli, C. freundii, P. vulgaris, E. aerogenes) to biodegrade PET microplastics, achieving biodegradation rates of 87-95% in minimal mineral medium, demonstrating that microbial consortia can efficiently break down plastic contaminants. These findings are directly relevant to microplastic pollution research, offering a bioremediation pathway for one of the most prevalent plastic polymers found in aquatic and terrestrial environments.
Microbial Consortia: Synergistic Effects on Plastic Degradation and Enzyme Production
AI summary Read the abstract
This review synthesizes how microbial consortia outperform single isolates in plastic biodegradation through cooperative metabolism and complementary enzymatic repertoires including laccases, cutinases, and multicopper oxidases. The authors identify cross-feeding and enzyme complementarity as key drivers of superior degradation and outline design principles for scalable consortium-based plastic bioremediation.
Synergistic biodegradation of polyethylene by experimentally evolved bacterial biofilms
AI summary Read the abstract
Researchers used long-term experimental evolution to develop bacterial biofilm communities capable of degrading polyethylene, cycling 40 rounds of selection with PE as the sole carbon source. The evolved multi-species consortia, dominated by Stutzerimonas stutzeri, showed a synergistic division of labor — one species expressing degradation enzymes while others produced biofilm-forming polysaccharides — outperforming ancestral populations in PE breakdown.
Biodegradación de polietileno de baja densidad en suelo con hongos del género Aspergillus sp.
AI summary Read the abstract
Researchers tested whether three Aspergillus fungal species could biodegrade low-density polyethylene (LDPE) plastic in soil over 30 and 60 days, finding that a consortium of all three species achieved up to 18.45% degradation of thinner LDPE samples within 60 days. These results suggest Aspergillus fungi hold biotechnological potential as a biological strategy to mitigate plastic pollution in soil environments.
Identification and characterization of filamentous fungi isolated from a local landfill with potential to degrade low density polyethylene
AI summary Read the abstract
Researchers isolated 12 fungal strains from a Colombian landfill and identified three isolates — belonging to genera including Trichoderma — capable of biodegrading low-density polyethylene (LDPE), highlighting the potential of landfill-derived microorganisms as candidates for plastic biodegradation strategies.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.