The current study investigates the potential for discolouration and degradation of Reactive Blue 19 and Reactive Black 5 textile dyes by endophytic fungi Phlebia sp. and Paecilomyces formosus as well as the potential cytotoxicity of products or by-products generated by the treatments in fish erythrocytes. It was observed at 30 days that both endophytes showed biodegradation activity with 0.1 g mL of dyes. P. formosus showed highest extracellular and intracellular protein content levels after the 15th day, and Phlebia sp. stands out for production of extracellular laccase, indicating that this enzyme may be associated with the decolouration capacity. The dyes showed toxic effects in fishes at 0.01 g mL concentration, resulting in the appearance of micronuclei in erythrocyte cells. When degraded dyes treated by endophytes were tested, the frequency of micronuclei reduced approximately 20%, indicating the effectiveness of these endophytic in the treatment of textile dyes with less environmental impact, thus indicating a potential for application of these fungi in bioremediation process.

Viabilidade da cultura temporária de linfócitos, em diferentes tempos após coleta do sangue, para análise de cariótipo

The environment diversity is directly related to environmental balance, which is directly affected by industrial and municipal waste release. Some species of microorganisms can act as decomposers in bioremediation process, aiding in contaminated areas recovery. The Maringá city, located in state of Paraná -Brazil, have been demonstrated rapid population growth and excelling in the construction sector, textile, and others, resulting in an increase of waste generated, necessitating the deployment of new technologies for waste treatment, in order to reduce them, so that decrease the socio-economic and environmental impact. The city counts with the Plan for Waste Manager (PGR, by its initials in Portuguese) that aims at controlling the waste produced and the proper disposal thereof. Aiming to improve the treatment of waste generated, we made a survey to relate the industrial and domestic waste produced in Maringá with possible ways of treatment, in sustainable processes, using the bioremediation potential of microorganisms. Keywords RESUMOA diversidade do meio ambiente está diretamente relacionada com equilíbrio ambiental, o qual é diretamente afetado pela liberação de resíduos industriais e urbanos. Algumas espécies de microrganismos podem atuar como decompositores, em processos de biorremediação, auxiliando na recuperação de áreas contaminadas. O município de Maringá, localizado no estado do Paraná -Brasil, vem apresentando rápido crescimento populacional e se destacando principalmente nos setores de construção civil, têxtil, entre outros. Como consequência, há o aumento de resíduos gerados e, desta forma, a necessidade de implantação de novas tecnologias de tratamentos de resíduos à fim de reduzilos, de maneira a diminuir o impacto sócio-econômico-ambiental. A cidade conta com o Plano de Gerenciamento de Resíduos (PGR), que visa o controle dos resíduos produzidos e a sua destinação correta. Com o intuito de melhorar e buscar alternativas para o tratamento dos resíduos gerados, o objetivo deste trabalho foi relacionar os dejetos industriais e domésticos produzidos no município de Maringá com possíveis formas de tratamento utilizando, de maneira sustentável, o potencial biorremediador de microrganismos.