alexa Production of pectinases by Aspergillus niger in solid state fermentation at high initial glucose concentrations.
Chemical Engineering

Chemical Engineering

Journal of Bioprocessing & Biotechniques

Author(s): SolisPereyra S, FavelaTorres E, GutirrezRojas M, Roussos S, SaucedoCastaeda G,

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Abstract Exopectinase (exo-p) and endopectinase (endo-p) production by Aspergillus niger CH4 in solid state culture was studied at initial glucose concentrations of 100, 250, 350 and 450 g/l. The highest activity of exo-p (35 U/g) was produced at 72 and 120 h in the medium containing 100 and 250 g glucose/l, respectively. The maximum endo-p activity (9 U/g) was produced at 72 h in the medium with 250 g glucose/l. The reduction in pectinase production at 350 and 450 g/l initial glucose concentration was due neither to repression of the synthesis of the enzyme nor to the glucose consumption rate of the strain but due to a drastic drop in pH of the medium. This article was published in World J Microbiol Biotechnol and referenced in Journal of Bioprocessing & Biotechniques

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