Apresentação

Ribeiro-Filho, Nilton P.; Matsushima, Elton H.; Silva, José Aparecido da

doi:10.1590/s0103-863x2004000100002

Cited by 1 publication

(2 citation statements)

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“…Various hemicellulases that occur extensively in bacteria and mesophilic and thermophilic fungus, have been investigated regarding the bioconversion of agricultural biomass in fuels and in useful chemical products (2,4,7,15). An extensive revision on the production of cellulases and xylanases for microorganisms is found in the work of Elisashvili (6).…”

Section: Determination Of the Hydrolysis Of Various Glucan By The Crumentioning

confidence: 99%

“…Studies have shown that the endoglucanase act internally on the chain of cellulose cleaving β-linked bonds liberating non-reducing ends, and exoglucanases act removing cellobiose from this non-reducing end of cellulose chain. Finally, β-glucosidase completes the saccharification by splitting cellobiose and small cello-oligossaccharides into glucose molecule (2,7,16).…”

Section: Introductionmentioning

confidence: 99%

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Production of xylanase and CMCase on solid state fermentation in different residues by Thermoascus aurantiacus miehe

Silva¹,

Lago²,

Merheb³

et al. 2005

Braz. J. Microbiol.

104

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The use of waste as raw material is important for government economy and natural balance. The purpose of this work was to study the production of CMCase and xylanase by a Brazilian strain of Thermoascus aurantiacus in solid state fermentation (SSF) using different agricultural residues (wheat bran, sugarcane bagasse, orange bagasse, corncob, green grass, dried grass, sawdust and corn straw) as substrates without enrichment of the medium and characterize the crude enzymes. The study of the extracellular cellulolytic and hemicellulolytic enzymes showed that T. arantiacus is more xylanolytic than cellulolytic. The highest levels of enzymes were produced in corncob, grasses and corn straw. All the enzymes were stable at room temperature by 24 h over a broad pH range (3.0-9.0) and also were stable at 60ºC for 1 h. The optimum pH and temperature for xylanase and CMCase were 5.0-5.5 and 5.0 and 75ºC, respectively. The microorganism grew quickly in stationary, simple and low cost medium. The secreted extracellular enzymes presented properties that match with those frequently required in industrial environment.

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Section: Determination Of the Hydrolysis Of Various Glucan By The Crumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%