Novel proteins for the treatment of cellulosic material
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Solution Overview
Problem
Current methods for enzymatic hydrolysis of cellulosic biomass are inefficient, especially when processing lignified materials like wood or agricultural waste, leading to high costs and limited use of biofuels from lignocellulosic substrates, with a need for improved cellulase mixtures and enzymes that function effectively at both moderate and elevated temperatures.
Innovation Solution
Development of novel GH61 polypeptides from Acremonium thermophilium, which enhance the hydrolysis of cellulosic materials by increasing the efficiency of cellulase enzyme mixtures, allowing for effective hydrolysis at a broad temperature range, including elevated temperatures, and reducing the required enzyme dosage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional enzymatic hydrolysis methods are used for lignocellulosic materials, then the process is simple to operate, but the hydrolytic efficiency is low and enzyme dosage requirements are high
Solution Approach 1:
The patent applies composite materials by creating enzyme formulations that combine cellulases with GH61 polypeptides. This composite enzyme system enhances hydrolytic efficiency on lignocellulosic substrates while reducing the total enzyme dosage required, directly resolving the contradiction between productivity and quantity of substance.
2Productivity
If elevated temperatures are used for hydrolysis to increase reaction rates, then productivity improves, but enzyme stability decreases
Solution Approach 1:
The patent applies parameter changes by optimizing the temperature parameter for hydrolysis processes. The invention demonstrates that elevated temperatures (40-60°C) can be used effectively when GH61 polypeptides are present, as these polypeptides enhance the thermal stability and activity of cellulase enzymes, allowing the system to maintain enzyme stability while operating at higher temperatures for improved productivity.
3Productivity
If more enzyme is added to improve hydrolysis efficiency, then productivity increases, but process complexity and cost increase
Solution Approach 1:
The patent applies the intermediary principle by introducing GH61 polypeptides as mediator substances that enhance the activity of cellulase enzymes. These polypeptides act as intermediaries that facilitate more efficient hydrolysis of lignocellulosic materials, allowing reduced enzyme dosages while maintaining or improving productivity, thereby simplifying the overall process.
4Temperature
If conventional cellulase mixtures are used, then the process is well-established, but the ability to function at elevated temperatures is limited
Solution Approach 1:
The patent applies universality by developing enzyme formulations with GH61 polypeptides that provide multi-functional capability. These formulations maintain effective hydrolysis activity across a broad temperature range (30-60°C), allowing the same enzyme system to function efficiently at both moderate and elevated temperatures, thus resolving the contradiction between temperature adaptability and hydrolysis efficiency.
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 GH61 polypeptides significantly improve the hydrolytic efficiency of cellulase mixtures, enabling higher sugar and ethanol concentrations, reducing contamination risks, and allowing for more flexible process configurations, thus lowering energy and investment costs while maintaining enzyme stability and recyclability.
Implementation Method 1
Enzymatic hydrolysis is considered to be the most promising technology for converting cellulosic biomass into fermentable sugars
Implementation Method 2
The cellulose fraction is then hydrolysed to obtain sugars that can be fermented by yeast or other fermentative organisms into ethanol
Data Source
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Figure 3
AI summary
The present invention discloses novel polypeptides and enzyme preparations containing them, which enhance the efficiency of the cellulosic degradation even at elevated temperatures. The polypeptides are produced by recombinant technology, and means for their production are described. The novel polypeptides are useful in processing biomass, and in biofuel, starch, textile, detergent, pulp and paper, food, feed or beverage industries. They may also be used e.g. in cleaning the interior of a dishwashing machine or for biofinishing or biostoning. The novel polypeptides are also useful in animal feed.