Production of pectinases byAspergillus nigerin solid state fermentation at high initial glucose concentrations

✍ Scribed by S. Solis-Pereyra; E. Favela-Torres; M. Gutiérrez-Rojas; S. Roussos; G. Saucedo-Castañeda; P. Gunasekaran; G. Viniegra-González

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 327 KB
• Volume: 12
• Category: Article
• ISSN: 1573-0972
• DOI: 10.1007/bf00360924

✦ Synopsis

Exopedinase

(exo-p) and endopectinase (endo-p) production by Aspergiflus 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.