Mn2+-Fed Xylanase Production in Trichoderma Fed-Batch Culture
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Solution Overview
Problem
Current methods for producing xylanase from Trichoderma spp. strains do not effectively yield enzymes with high activity and concentration, which are necessary for efficient utilization in feed additives and other industrial applications.
Innovation Solution
A method involving culturing Trichoderma spp. microorganisms in a fermentation medium containing Mn 2+ ions and supplying a feed medium with Mn 2+ ions, utilizing a fed-batch culture to control substrate concentration and enhance enzyme production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional culture methods are used for Trichoderma spp. strain, then the production process is simple, but the xylanase concentration and activity are low
Solution Approach 1:
The patent applies parameter changes by optimizing the culture medium composition with specific ratios of carbon source (5-10 g/L), nitrogen source (2-5 g/L), phosphate (5-10 g/L), and adding Mn2+ ions (0.1-1.0 g/L manganese sulfate). The culture conditions are also optimized with pH 5.0-6.0, temperature 25-30°C, and aeration rate 1-3 vvm, which significantly increases xylanase production titer and activity compared to traditional methods
Solution Approach 2:
The patent employs preliminary action through a two-stage culture process: first growing Trichoderma spp. strain in a preliminary culture medium to achieve adequate biomass, then transferring to a production medium optimized for enzyme synthesis. This staged approach allows the microorganism to first establish population density and then maximize enzyme production under optimized conditions
2Productivity
If enzyme activity is increased through optimization, then the productivity improves, but the production cost increases
Solution Approach 1:
The patent achieves high enzyme activity (increased by 47.8% compared to traditional methods) through optimized parameter combinations: carbon source 5-10 g/L, nitrogen source 2-5 g/L, phosphate 5-10 g/L, Mn2+ ions 0.1-1.0 g/L as manganese sulfate, pH 5.0-6.0, temperature 25-30°C, and aeration rate 1-3 vvm. These optimized parameters maximize xylanase production efficiency while controlling production costs
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method significantly increases enzyme activity by up to 47.8% compared to traditional methods, enabling high-concentration production of xylanase suitable for feed additives and other industrial uses.
Implementation Method 1
culturing a Trichoderma spp. microorganism in a fermentation medium comprising Mn 2+ enables high-concentration production of xylanase and increases enzyme activity by up to 47.8%
Data Source
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AI summary
The present invention relates to a method for producing a high concentration of xylanase from a Trichoderma spp. strain, and it was confirmed that, in the fed-batch culture of a Trichoderma spp. strain, culturing was performed in a fermentation medium supplemented with Mn2+ ions and a feed medium supplemented with Mn2+ ions was supplied to the fermentation medium to perform culturing, thereby growing bacterial cells within a short period of time, thus enabling the production of a highly active enzyme. Therefore, the method can be effectively used as a method for mass-producing an enzyme from a Trichoderma spp. strain.