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Moraes,Luiza; Rosa,Gabriel Martins da; Souza,Michele da Rosa Andrade Zimmermann de; Costa,Jorge Alberto Vieira. |
ABSTRACT Microalgae are efficient at using solar energy to turn CO2 and nutrients into biomass containing lipids, proteins, carbohydrates and other compounds that may be used to produce bioproducts for human and animal consumption and pharmaceutical use. The aim of this study was to assess the effect of the NaNO3 and NaCl concentration on the growth kinetics, the biomass composition and the ability to biofix CO2 using the microalga Spirulina sp. LEB 18. The assays were carried out according to a 22 central composite design (CCD) with different concentrations of NaNO3 (1.25, 1.88 and 2.50 g L-1) and NaCl (1.00, 15.0 and 30.0 g L-1). The assays were carried out in 2 L vertical tubular photobioreactors at 30°C, 12 h light/dark and an injection of 12.0% v/v of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: CO2; Fixation; Growth kinetics; Microalgae; Nutrients. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100410 |
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Marques,Daniela A. Viana; Santos-Ebinuma,Valéria de Carvalho; Oliveira,Patrícia Maria Sobral de; Lima,Gláucia Manoella de Souza; Araújo,Janete M.; Lima-Filho,José L.; Converti,Attilio; Pessoa-Júnior,Adalberto; Porto,Ana L.F.. |
The selection of new microorganisms able to produce antimicrobial compounds is hoped for to reduce their production costs and the side effects caused by synthetic drugs. Clavulanic acid is a β-lactam antibiotic produced by submerged culture, which is widely used in medicine as a powerful inhibitor of β-lactamases, enzymes produced by bacteria resistant to antibiotics such penicillin and cephalosporin. The purpose of this work was to select the best clavulanic acid producer among strains of Streptomyces belonging to the Microorganism Collection of the Department of Antibiotics of the Federal University of Pernambuco (DAUFPE). Initially, the strains were studied for their capacity to inhibit the action of β-lactamases produced by Klebsiella aerogenes ATCC... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clavulanic acid; Β-lactamases inhibitor; Streptomyces screening; Submerged culture; Growth kinetics. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300022 |
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