Atividade antimicrobiana e produção de enzimas de interesse biotecnológico de bactérias isoladas de diferentes habitats.

• Ano de defesa: 2009
• Autor(a) principal: RODRIGUES, Ariana Alves
• Orientador(a): VIEIRA, José Daniel Gonçalves
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Mestrado em Ciências da Saúde
• Departamento: Ciências da Saúde - Medicina
• País: BR
• Palavras-chave em Português: Atividade antimicrobiana; microrganismos; enzimas; bioativas.; 1. Atividades antimicrobiana 2. microrganismos 3. enzimas
• Palavras-chave em Inglês: Antimicrobial activity; microorganisms; enzymes; bioactive.
• Área do conhecimento CNPq: CNPQ::CIENCIAS BIOLOGICAS::MICROBIOLOGIA
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tde/1719

The microorganisms are essential for the environment and contribute to stabilize the environments, playing a hole in the basic ecologic process such as biogeochemistry cycles and food chains, and sometimes responsible for the maintenance of the ecologic relationship between the organisms. So we have a diversity of microorganism and in consequence bioactive molecules that they produce as a result of primary and secondary metabolism, and are used by humans in many important social-economic activities, which includes the search for new medicines and new enzymes with biotechnology interest. This study analyzed different microorganisms isolated from different habitats, and the objective was select microorganisms with the capacity of inhibit the growing of pathogenic microorganisms and that produces enzymes with biotechnological applications. The isolates antimicrobial and enzymatic activities were evaluated, bioactive substances extracted and the cytotoxic activity with Artemia salina determined. The biggest part of the isolates produces substances with antimicrobial activity for the evaluated gram-positives, and none are toxic in low levels. The isolates are great producers of esterases and β-glucosidades. The isolates described in this study are from four different environments: Cerrado soil, Mata Atlântica, Azadirachta indica A. JUSS (Nim) e cave environment and are related to unique environmental conditions, the majority part of the isolates are able to produce molecules with biotechnology activity, this suggests a great microbial potential for the production of bioactive molecules that can be used in industries and medicine. Key Words: Antimicrobial activity, microorganisms, enzymes, bioactive.