Influence of carbon, nitrogen and phosphorous sources on glucoamylase production by Aspergillus awamori in solid state fermentation.
It was the objective of the present study to increase the production of glucoamylase by Aspergillus awamori through solid state fermentation, using wheat bran as the main carbon source and (NH4)2SO4, urea, KH2PO4, glucose, maltose and starch as additional nitrogen, phosphorus, and carbon sources. The production of glucoamylase is strongly influenced by N and C sources. A 100% increase was observed when the (NH4)2SO4 was replaced by urea, with C/N = 4.8, using maltose as the additional carbon source. C/P ratios in a range of 5.1 to 28.7 did not induce glucoamylase production under the studied conditions.
Centro de Pesquisa em Alimentação, Universidade de Passo Fundo, Caixa Postal 611, 99070-010 - Passo Fundo, RS, Brazil. telma@upf.tche.br
Telma Elita
TE
Bertolin
Willibaldo
W
Schmidell
Alfredo E
AE
Maiorano
Janice
J
Casara
Jorge A V
JA
Costa
D001230:Aspergillus / Q000201:enzymology* / Q000254:growth & development; D002244:Carbon / Q000378:metabolism; D003470:Culture Media; D005285:Fermentation; D005087:Glucan 1,4-alpha-Glucosidase / Q000096:biosynthesis*; D005947:Glucose / Q000378:metabolism; D007700:Kinetics; D009584:Nitrogen / Q000378:metabolism; D010084:Oxidation-Reduction; D010758:Phosphorus / Q000378:metabolism
D003470:Culture Media; D010758:Phosphorus; D002244:Carbon; D005087:Glucan 1,4-alpha-Glucosidase; D005947:Glucose; D009584:Nitrogen