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| Reis,Cristiane Bianchi Loureiro dos; Morandini,Liziane Maria Barassuol; Bevilacqua,Caroline Borges; Bublitz,Fabricio; Ugalde,Gustavo; Mazutti,Marcio Antonio; Jacques,Rodrigo Josemar Seminoti. |
| Abstract Biosurfactants have many advantages over synthetic surfactants but have higher production costs. Identifying microorganisms with high production capacities for these molecules and optimizing their growth conditions can reduce cost. The present work aimed to isolate and identify a fungus with high biosurfactant production capacity, optimize its growth conditions in a low cost culture medium, and characterize the chemical structure of the biosurfactant molecule. The fungal strain UFSM-BAS-01 was isolated from soil contaminated with hydrocarbons and identified as Fusarium fujikuroi. To optimize biosurfactant production, a Plackett–Burman design and a central composite rotational design were used. The variables evaluated were pH, incubation period,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Giberella fujikuroi Surface tension NMR spectroscopy α; Β-Trehalose Trehalolipids. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500185 |
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| Risso,Fernanda Vaz Alves; Mazutti,Marcio Antonio; Treichel,Helen; Costa,Fátima; Maugeri,Francisco; Rodrigues,Maria Isabel. |
| This work investigated the fructooligosaccharides (FOS) synthesis by immobilized inulinase obtained from Kluyveromyces marxianus NRRL Y-7571 in aqueous and aqueous-organic systems using sucrose as substrate. The sequential strategy of experimental design was used to optimize the FOS conversion in both systems. For the aqueous-organic system, a 2(6-2) fractional design was carried out to evaluate the effects of temperature, sucrose concentration, pH, aqueous/organic ratio, enzyme activity, and polyethylene glycol concentration. For the aqueous system, a central composite design for the enzyme activity and the sucrose concentration was carried out. The highest fructooligosaccharides yield (Y FOS) for the aqueous-organic system was 18.2 ± S0.9 wt%, at 40 ºC,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Immobilized inulinase; Fructooligosaccharides synthesis; Kluyveromyces marxianus NRRL Y-7571. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000200006 |
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| Visioli,Luiz Jardel; Alves,Eliana Albornoz; Trindade,Aline; Kuhn,Raquel Cristine; Schwaab,Marcio; Mazutti,Marcio Antonio. |
| In this research it was evaluated the production of biobutanol by Clostridium beijerinckiiNRRL B-592 using sweet sorghum juice as carbon source. Operational variables, like pH and initial inoculum size, as well as supplementation of industrial media with yeast extract and tryptone, were evaluated. The maximum butanol obtained was 2.12g kg-1 using 12.5% of inoculum size, 0.05g 100mL-1 of tryptone and 0.1g 100mL-1 of yeast extract and initial pH of 5.5. The main contribution of this research was to show a systematic procedure for development of a low cost industrial media for biobutanol production from sweet sorghum. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biobutanol production; Industrial media; Biofuel; Sweet sorgum. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901707 |
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