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| Guimarães,Luis Henrique S.; Peixoto-Nogueira,Simone C.; Michelin,Michele; Rizzatti,Ana Carolina S.; Sandrim,Valéria C.; Zanoelo,Fabiana F; Aquino,Ana Carla M.M.; Junior,Altino B.; Polizeli,Maria de Lourdes T. M.. |
| Many enzymes produced by fungi have relevant biotechnological applications in several industrial areas. The purpose of this study was to collect and isolate filamentous fungi from soil and humus, plants and sugar cane bagasse of different regions of the São Paulo state. Forty isolates were examined for their ability to produce xylanase, glucose-oxidase, alkaline phosphatase, acid phosphatase, phytase, pectinase and amylase. Among these, twenty three isolates exhibited enzymatic potential. The xylanases produced by two of these isolates (Aspergillus caespitosus and A. phoenicis) showed good potential for pulp bleaching. Among seventeen isolates, at least three produced high levels of glucose-oxidase, being Rhizopus stolonifer and A. versicolor the best... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphatase; Xylanase; Glucose oxidase; Pectinase; Amylase; Rhizopus microsporus var. rhizopodiformis; Fungi. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400014 |
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| Silva,Aline Ramos da; Tomotani,Ester Junko; Vitolo,Michele. |
| Conversion of sucrose into fructose and gluconic acid using invertase, glucose oxidase and catalase was studied by discontinuous (sequential or simultaneous addition of the enzymes) and continuous (simultaneous addition of the enzymes in a 100 kDa-ultrafiltration membrane reactor) processes. The following parameters were varied: concentration of enzymes, initial concentration of substrates (sucrose and glucose), pH, temperature and feeding rate (for continuous process). The highest yield of conversion (100%) was attained through the discontinuous (batch) process carried out at pH 4.5 and 37 ºC by the sequential addition of invertase (14.3 U), glucose oxidase (10,000 U) and catalase (59,000 U). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sucrose/conversion; Fructose; Gluconic acid; Invertase; Glucose oxidase; Catalase. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000200022 |
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| KOUASSI-KOFFI,Jean Didier; STURZA,Alina; PĂUCEAN,Adriana; MAN,Simona; MUREȘAN,Andruța Elena; PETRUȚ,Georgiana; MUREȘAN,Vlad; MUSTE,Sevastița. |
| Abstract The aim of this study was to assess the effect of adding glucose oxidase (GOX) on wheat-maize dough and bread textural characteristics. It strengthens the importance and need of replacing wheat flour with maize flour in regions where extensive cultivation of wheat is not possible. For improving the rheological properties of bread, GOX was added to wheat and wheat-maize flours. Wheat and maize flours were used in several ratios, but the best results were obtained for (on flour basis): 80:20, 75:25, 70:30, where the highest values correspond to the wheat flour. Wheat-maize dough and bread volume were slightly influenced by GOX addition. Dough strength was higher in the case of dough without GOX addition than the samples enriched by GOX, while crumb... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dough rheology; Bread freshness and hardening; Glucose oxidase; Maize flour. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000100127 |
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| VAZ JUNIOR, S.; RODRIGUES, D. de S.; GONCALVES, S. B.; ALMEIDA, J. R. M. de; CARVALHO, W.; PACHECO, T. F.. |
| Os ácidos aldônicos — glicônico e xilônico — estão entre as moléculas de alto valor agregado que podem ser obtidas a partir de biomassa lignocelulósica e apresentam elevado potencial de aplicação comercial em diferentes campos. A síntese de ácidos aldônicos é possível por meio de diferentes processos, como: químico, eletroquímico, microbiano e enzimático. Porém, independentemente da opção escolhida, ainda existem vários obstáculos para que a produção em larga escala seja bem estabelecida. Entre esses obstáculos, está o desenvolvimento de um catalisador eficaz e estável para a síntese dos ácidos aldônicos a partir de hidrolisados de biomassa lignocelulósica, cuja composição apresenta, além dos monômeros de interesse (glicose e xilose), um grande número de... |
| Tipo: Folhetos |
Palavras-chave: Biocatalisador; Ácidos aldônicos; Biocatálise; Reator de leito fixo; Ácido glicônico; Ácido xilônico; Glicose oxidase; Catalisador; Green chemistry; Biocatalysis; Biomass; Glucose oxidase. |
| Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124141 |
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