Title:

The effect of xylose, galactose and sorbose on the production of selected extracellular enzymes by mutant-strain Trichoderma reesei M-7 during continuous cultivation

Subtitle:

The effect of xylose, galactose and sorbose on the production of selected extracellular enzymes by mutant-strain Trichoderma reesei M-7 during continuous cultivation

Creator:

Janas, Piotr ; Targoński, Zdzisław ; Mleko, Stanisław

Publisher:

Committee on Biotechnology PAS ; Institute of Bioorganic Chemistry PAS

Date issued/created:

2002

Subject and Keywords:

biotechnology

Abstract:

The effect of xylose, galactose and sorbose on the production of cellulases,xylanases, lytic enzymes and P-galactosidase by mutant - strain Trichodermareesei M-7 was analysed. The aforementioned sugars were used separately andin the form of mixtures with lactose as the source of carbon during continuouscultivation of mutant M-7. Feeding medium containing mixtures of xylose andlactose in the ratio of 0.25/0,7596 and 0.5/0.596 induced an increased synthesis ofxylanases. Increased xylanolytic activity (about 12-27%) with the xylose/glucoseratio of 0.25/0.75% and a significantly increased activity (about 2.5 fold) with theratio of both sugars of 0.5/0.5% was observed in comparison with continuouscultivation in the presence of 1% of lactose in the medium. Reduced synthesis ofall cellulolytic (FPU, p-1,4-endoglucanase, p-glucosidase) and xylanolytic enzymes correlated with the increased galactose concentration in the feeding medium. Galactose also repressed the production of p-galactosidase of the mutant-strain M-7. The results obtained after continuous cultivation with sorboseand lactose showed that sorbose was a worse inducer of synthesis of cellulolyticenzymes than lactose

Relation:

Biotechnologia, vol.56, 1 (2002)-.

Volume:

56

Issue:

1

Start page:

195

End page:

207

Resource type:

Text

Detailed Resource Type:

Article

Format:

application/pdf

Resource Identifier:

0860-7796 ; IChB B-52

Source:

Library of Institute of Bioorganic Chemistry PAS

Language:

pol

Language of abstract:

eng

Temporal coverage:

1988-2010

Rights:

Creative Commons Attribution BY-SA 4.0 license

Terms of use:

Copyright-protected material. [CC BY-SA 4.0] May be used within the scope specified in Creative Commons Attribution BY-SA 4.0 license, full text available at:

Digitizing institution:

Institute of Bioorganic Chemistry of the Polish Academy of Science

Original in:

Institute of Bioorganic Chemistry of the Polish Academy of Science

Projects co-financed by:

Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.

Access:

Open