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A rheological approach to identify efficient biopolymer producing bacteria.
Malvar, Sara; Cardoso, Letícia O B; Karolski, Bruno; Perpetuo, Elen A; Carmo, Bruno S; Meneghini, Julio R.
Afiliação
  • Malvar S; Department of Mechanical Engineering, Escola Politécnica, University of São Paulo, São Paulo, SP, Brazil.
  • Cardoso LOB; The Interunit Program in Biotechnology, University of São Paulo, São Paulo, SP, Brazil.
  • Karolski B; Environmental Research and Education Center - CEPEMA, Escola Politécnica, University of São Paulo, Cubatão, SP, Brazil.
  • Perpetuo EA; Environmental Research and Education Center - CEPEMA, Escola Politécnica, University of São Paulo, Cubatão, SP, Brazil.
  • Carmo BS; Environmental Research and Education Center - CEPEMA, Escola Politécnica, University of São Paulo, Cubatão, SP, Brazil.
  • Meneghini JR; Institute of Marine Sciences, Federal University of São Paulo, Santos, SP, Brazil.
Biotechnol Bioeng ; 118(2): 622-632, 2021 02.
Article em En | MEDLINE | ID: mdl-33090455
This study investigates the relationship between collective motion and propulsion of bacterial consortia and their biopolymer production efficiency. Rheological tests were conducted for suspensions of two different methanotrophic bacterial consortia obtained after enrichment of sediment samples from mangrove sites in Brazil. We considered the linear viscoelasticity region and analyzed the values of storage and loss moduli as functions of days of cultivation, for different values of the volume fraction. The suspensions' rheological behaviors reflected the bacterial growth stage. We found that the formation of structures over time in some types of consortia can hinder the movement of bacteria in the search for nutrients. The change in complex viscosity of the two consortia followed a different and rich behavior that appears to be closely related to their capacity to capture methane. Our analysis showed a possible correlation between collective motion, viscosity reduction, and biopolymer production. The pieces of evidence from this study suggest that the efficiency of bacterial motion is directly related to biopolymer production, and this could facilitate the process of identifying the best consortium of biopolymer producing bacteria.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poliésteres / Bactérias / Consórcios Microbianos / Hidroxibutiratos / Metano Idioma: En Revista: Biotechnol Bioeng Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poliésteres / Bactérias / Consórcios Microbianos / Hidroxibutiratos / Metano Idioma: En Revista: Biotechnol Bioeng Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos