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Amylase production by solid state culture of Aspergillus oryzae on polyurethane foams. Some mechanistic approaches from an empirical model

AuthorsMurado García, Miguel Anxo ; González Fernández, Pilar ; Torrado, Ana ; Pastrana, Lorenzo
KeywordsEmpirical model
Mechanistic interpretation
Amylase production
Solid state culture
Polyrethane foam
Issue Date1997
CitationProcess Biochemistry 32(1): 35-42 (1997)
AbstractUsing systems formed by particles of polyurethane foam of different densities soaked in an amylaceous effluent, the production of amylases by Aspergillus oryzae in solid state culture was studied by a complete factorial plan with four variables -- support density, particle diameter, volume of liquid phase and substrate concentration. The empirical model obtained is consistent and allows a simple control of the response, superior in several respects to that of the corresponding submerged cultures. Moreover, it enables a mechanistic approach to the behaviour of the system, whose principal kinetic characteristics can be interpreted in terms of intra- and interparticular diffusional effects, which have a determining influence on basic state variables, such as water activity and gas transfer.
Description8 páginas, 6 figuras, 4 tablas
Publisher version (URL)http://dx.doi.org/10.1016/S0032-9592(96)00044-1
Appears in Collections:(IIM) Artículos
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