%0 Journal Article
%T Potencial de biodegrada  o de microcistinas por microrganismos Biodegradation potential of microcystins by microorganisms
%A Francine Kuriama
%A Em¨ªlia Kiyomi Kuroda
%A Karla Bigetti Guergoletto
%A Sandra Garcia
%J Engenharia Sanitaria e Ambiental
%D 2012
%I Brazilian Association of Sanitary and Environmental Engineering
%X Para minimizar os problemas relacionados ¨¤ ocorr¨ºncia de cianobact¨¦ria em ¨¢guas destinadas ao consumo humano h¨¢ necessidade de se realizar estudos de alternativas t¨¦cnicas de tratamento com destaque aos biofilmes com potencial de degrada  o de microcistinas (MC). O presente trabalho teve como objetivo avaliar o potencial de degrada  o de MC pela bact¨¦ria Sphingosinicella microcystinivorans B9, diferentes cepas de leveduras e bact¨¦rias probi¨®ticas. O teste foi efetuado com extrato de MC e diferentes quantidades de biovolume e densidade celular dos microrganismos. Os tratamentos foram mantidos a 27oC com rota  o de 100 rpm e as amostras para an¨¢lise de MC e contagem dos microrganismos foram retiradas ap¨®s 0 e 96 horas de contato. A bact¨¦ria B9 apresentou maior degrada  o de MC, chegando a 98% ap¨®s 96 horas. To minimize problems related to the occurrence of cyanobacteria in water for human consumption there is need to investigate alternative treatment techniques with emphasis on biofilms with the potential degradation of microcystins (MC). This study aimed to evaluate the potential degradation of MC by bacteria Sphingosinicella microcystinivorans B9, different strains of yeast and probiotic bacteria. The test was carried out with the extract obtained from strain Microcystis sp. In the tests biomass and cultures of microorganisms were used and the treatments were maintained at 27oC with 100 rpm. Samples for analysis of MC and for counting the microorganisms were collected at 0 and 96 hours. The bacterium B9 presented the highest potential of degradation of MC reaching 98% after 96 hours.
%K cianotoxinas
%K microcistinas
%K biodegrada  o
%K bact¨¦ria B9
%K leveduras
%K bact¨¦rias probi¨®ticas
%K cyanotoxins
%K microcystin
%K biodegradation
%K bacterium B9
%K yeast
%K probiotic bacteria
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-41522012000200007