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| Fonseca, Gustavo Graciano; Silva, Alisson Alves da. |
| The ability of microalgae to grow heterotrophically lies in the ability to oxidize organic compounds present in the external environment. The aim of this work was to evaluate the growth of Chlorella vulgaris under heterotrophic culture conditions using Basal Bold and NPK media supplemented with different sole carbon sources (glucose, fructose, sucrose, glycerol or acetate). The kinetic parameters obtained were maximum specific growth rate (µmax), doubling time (DT), maximal absorbance, which was also converted to cell concentration values using a linear relation, and cell productivity (PX). Among all the treatments analyzed, the highest maximum specific growth rate found was 0.030 hour-1 (0.72 day-1) in the treatment using Basal Bold medium supplemented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.12.00.00-9; 2.12.01.00-5 microalga; Physiology; Kinetic parameters; Growth rate. Biotecnologia. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/39401 |
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| Ribeiro, Roana Cecília dos Santos; Ribeiro, Thaís Rafaelle dos Santos; Souza-Motta, Cristina Maria de; Medeiros, Erika Valente; Moreira, Keila Aparecida. |
| The current study evaluated the proteases production from 11 fungal species belonging to the genera Mucor, Rhizomucor and Absidia. The species were obtained from the Collection of Cultures URM at the Mycology Department-UFPE, Brazil. The best producing species was Mucor hiemalis URM 3773 (1.689 U mL-1). Plackett-Burman design methodology was employed to select the most effective parameter for protease production out of 11 medium components, including: concentration of filtrate soybean, glucose, incubation period, yeast extract, tryptone, pH, aeration, rotation, NH4Cl, MgSO4 and K2HPO4. Filtrated soybean concentration was the significant variable over the response variable, which was the specific protease activity. The crude enzyme extract showed optimal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.12.00.00-9; 2.12.02.00-1; 2.12.02.02-8 proteolytic activity; Substrate fermentation liquid; Plackett-Burman design; Biochemical characterization Microbiologia Industrial e de Fermentação. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/21016 |
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