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Changes in the starvation response through covalent cell attachment
1Department of Fermentation Chemistry and Bioengineering, Institute of Chemical Technology, Prague, Czech Republic.
Antonie Van Leeuwenhoek
|May 1, 1997
Summary
Immobilizing Candida utilis cells enhanced alkaline protease production under starvation. This stable effect suggests cell-surface contact positively influences cellular functions for improved enzyme yield.
Area of Science:
- Biotechnology
- Microbial Physiology
- Enzyme Engineering
Background:
- Microbial immobilization is crucial for industrial enzyme production.
- Candida utilis is a yeast with potential for extracellular enzyme synthesis.
- Understanding factors enhancing protease production is key for biotechnological applications.
Purpose of the Study:
- To investigate the effect of covalent cell immobilization on extracellular alkaline protease production by Candida utilis.
- To determine if immobilization enhances protease yield under specific starvation conditions.
- To explore the mechanism behind immobilization-induced enzyme production enhancement.
Main Methods:
- Covalent attachment of Candida utilis whole cells to a solid support.
- Induction of alkaline protease production using four distinct starvation conditions.
- Enzyme analysis to confirm protease identity and quantify production levels.
Main Results:
- Cell immobilization significantly and stably enhanced extracellular alkaline protease production.
- Protease identity was confirmed across all starvation conditions, with no other proteolytic enzymes detected.
- The enhancement effect was uniform across the immobilized cell population.
Conclusions:
- Covalent immobilization of Candida utilis cells is an effective strategy to boost alkaline protease production.
- Multipoint cell-solid surface contact may positively modulate cellular functions, leading to enhanced enzyme secretion.
- This approach offers a stable and efficient method for industrial enzyme manufacturing.