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dc.contributor.authorSilva, Claudio Henrique Cerri ept_BR
dc.contributor.authorPuls, Jurgenpt_BR
dc.contributor.authorSousa, Marcelo Valle dept_BR
dc.contributor.authorFerreira Filho, Edivaldo Ximenespt_BR
dc.date.accessioned2017-12-07T04:28:48Z-
dc.date.available2017-12-07T04:28:48Z-
dc.date.issued1999pt_BR
dc.identifier.citationSILVA, Claudio Henrique Cerri e et al. Purification and characterization of a low molecular weight xylanase from solid-state cultures of Aspergillus fumigatus Fresenius. Revista de Microbiologia, v. 30, n. 2, p. 114-119, 1999. DOI: https://doi.org/10.1590/S0001-37141999000200005. Disponível em: https://www.scielo.br/j/rm/a/N9R5cpJwrDwGSwMdtJkhWHw/?lang=en#. Acesso em: 10 set. 2021.pt_BR
dc.identifier.urihttp://repositorio.unb.br/handle/10482/25480-
dc.description.abstractUma enzima xilanolítica (xilanase II) foi purificada a partir de culturas de estado sólido de Aspergillus fumigatus Fresenius. O peso molecular de xilanase II foi estimado em 19 e 8,5 kDa por SDS-PAGE e FPLC, respectivamente. A enzima purificada apresentou maior atividade a 55°C e pH 5,5, além de hidrolisar especificamente xilana. Os valores aparentes de Km e Vmax de xilanas solúveis e insolúveis, isoladas de cereal e madeira, mostrou que xilanase IIa foi mais ativa em xilana solúvel de madeira. Estudos sobre produtos de hidrólise de xilanas e xilooligômeros por xilanase II em HPLC revelou que a enzima liberou uma variedade de xilooligômeros (xilobiose-xilohexose) e uma pequena quantidade de xilose a partir de xilooligômeros, apresentando atividade de transferase.pt_BR
dc.language.isoenpt_BR
dc.publisherSociedade Brasileira de Microbiologiapt_BR
dc.rightsAcesso Abertopt_BR
dc.titlePurification and characterization of a low molecular weight xylanase from solid-state cultures of Aspergillus fumigatus Freseniuspt_BR
dc.title.alternativePurificação e caracterização de uma xilanase de baixo peso molecular de culturas de estado sólido de Aspergillus fumigatus Fresenius-
dc.typeArtigopt_BR
dc.subject.keywordHemicelulosept_BR
dc.subject.keywordXilanasept_BR
dc.subject.keywordEnzimaspt_BR
dc.rights.licenseRevista de Microbiologia - This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY NC). Fonte: https://www.scielo.br/j/rm/a/N9R5cpJwrDwGSwMdtJkhWHw/?lang=en#. Acesso em: 10 set. 2021.-
dc.identifier.doihttps://dx.doi.org/10.1590/S0001-37141999000200005pt_BR
dc.description.abstract1A xylan-degrading enzyme (xylanase II) was purified to apparent homogeneity from solid-state cultures of Aspergillus fumigatus Fresenius. The molecular weight of xylanase II was found to be 19 and 8.5 kDa, as estimated by SDS-PAGE and gel filtration on FPLC, respectively. The purified enzyme was most active at 55 °C and pH 5.5. It was specific to xylan. The apparent Km and Vmax values on soluble and insoluble xylans from oat spelt and birchwood showed that xylanase II was most active on soluble birchwood xylan. Studies on hydrolysis products of various xylans and xylooligomers by xylanase II on HPLC showed that the enzyme released a range of products from xylobiose to xylohexaose, with a small amount of xylose from xylooligomers, and presented transferase activity.-
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