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Evaluation of hydrolysis products of xylans by xylan-degrading enzymes from Humicola grisea var. thermoidea and Aspergillus fumigatus Fresenius

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Abstract

Xylan-degrading enzyme activities were isolated from crude extracts of solid-state cultures of Aspergillus fumigatus Fresenius (Xyl I, Xyl III, Xyl IV and Xyl V) and Humicola grisea var. thermoidea (Xyl II) by chromatographic procedures. The pattern of hydrolysis of different xylans and pulps varied from traces of xylose to xylooligomers. The products formed suggest an endo-type enzyme mode of action. Some enzymes showed debranching and transglycosidase activities.

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Authors and Affiliations

  1. Laboratório de Enzimologia, Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, Brasil, CEP 70910-900

    Cláudio Henrique Cerri e Silva, Ângela Souza da Fonsêca, Severino de Albuquerque Lucena Neto, Eduardo de Aquino Ximenes & Edivaldo Ximenes Ferreira Filho

  2. Institut für Holzchemie, Leuschnerstrabe 91, 2050, Hamburg 80, Germany

    Jürgen Puls

Authors
  1. Cláudio Henrique Cerri e Silva
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  2. Ângela Souza da Fonsêca
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  3. Severino de Albuquerque Lucena Neto
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  4. Eduardo de Aquino Ximenes
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  5. Jürgen Puls
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  6. Edivaldo Ximenes Ferreira Filho
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Silva, C.H.C.e., Fonsêca, Â.S.d., Neto, S.d.A.L. et al. Evaluation of hydrolysis products of xylans by xylan-degrading enzymes from Humicola grisea var. thermoidea and Aspergillus fumigatus Fresenius. World Journal of Microbiology and Biotechnology 16, 81–83 (2000). https://doi.org/10.1023/A:1008954607205

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