title: Cellulases and hemicellulases from endophytic Acremonium species and its application on sugarcane bagasse hydrolysis.
abstract: The aim of this work was to have cellulase activity and hemicellulase activity screenings of endophyte Acremonium species (Acremonium zeae EA0802 and Acremonium sp. EA0810). Both fungi were cultivated in submerged culture (SC) containing L -arabinose, D -xylose, oat spelt xylan, sugarcane bagasse, or corn straw as carbon source. In solid-state fermentation, it was tested as carbon source sugarcane bagasse or corn straw. The highest FPase, endoglucanase, and xylanase activities were produced by Acremonium sp. EA0810 cultivated in SC containing sugarcane bagasse as a carbon source. The highest β-glucosidase activity was produced by Acremonium sp. EA0810 cultivated in SC using D -xylose as carbon source. A. zeae EA0802 has highest α-arabinofuranosidase and α-galactosidase activities in SC using xylan as a carbon source. FPase, endoglucanase, β-glucosidase, and xylanase from Acremonium sp. EA0810 has optimum pH and temperatures of 6.0, 55 °C; 5.0, 70 °C; 4.5, 60 °C; and 6.5, 50 °C, respectively. α-Arabinofuranosidase and α-galactosidase from A. zeae EA0802 has optimum pH and temperatures of 5.0, 60 °C and 4.5, 45 °C, respectively. It was analyzed the application of Acremonium sp. EA0810 to hydrolyze sugarcane bagasse, and it was achieved 63% of conversion into reducing sugar and 42% of conversion into glucose.
authors.affiliation: Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil.
authors.forename: Maíra Nicolau
authors.initials: MN
authors.lastname: de Almeida
authors.forename: Valéria Monteze
authors.initials: VM
authors.lastname: Guimarães
authors.forename: Kenneth M
authors.initials: KM
authors.lastname: Bischoff
authors.forename: Daniel Luciano
authors.initials: DL
authors.lastname: Falkoski
authors.forename: Olinto Liparini
authors.initials: OL
authors.lastname: Pereira
authors.forename: Dayelle S P O
authors.initials: DS
authors.lastname: Gonçalves
authors.forename: Sebastião Tavares
authors.initials: ST
authors.lastname: de Rezende
mesh_terms: D000164:Acremonium / Q000201:enzymology*; D056804:Biofuels; D044602:Cellulases / Q000737:chemistry / Q000378:metabolism*; D002482:Cellulose / Q000378:metabolism*; D005285:Fermentation; D005656:Fungal Proteins / Q000737:chemistry / Q000378:metabolism; D005947:Glucose / Q000096:biosynthesis; D006026:Glycoside Hydrolases / Q000737:chemistry / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D007218:Industrial Microbiology / Q000379:methods*; D031786:Saccharum / Q000378:metabolism*; D013696:Temperature; D014990:Xylans / Q000378:metabolism; D014994:Xylose / Q000378:metabolism; D003313:Zea mays / Q000378:metabolism; D000519:alpha-Galactosidase / Q000737:chemistry / Q000378:metabolism*
chemical_list: D056804:Biofuels; D005656:Fungal Proteins; D014990:Xylans; D002482:Cellulose; C027433:bagasse; D014994:Xylose; D044602:Cellulases; D006026:Glycoside Hydrolases; C023305:hemicellulase; D000519:alpha-Galactosidase; D005947:Glucose