GH61 Polypeptides Enhance Fermentation Yield
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The production of fermentation products like ethanol from lignocellulose-containing materials is costly due to high costs associated with lengthy fermentation times and low yields, necessitating processes that can accelerate fermentation and increase yield.
Innovation Solution
Incorporating GH61 polypeptides after hydrolysis is complete, allowing for separate hydrolysis and fermentation steps, which enhances cellulolytic activity and reduces the need for cellulolytic enzymes, thereby accelerating and increasing the efficiency of the fermentation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional fermentation processes are used to produce ethanol from lignocellulose-containing materials, then the process is simple and straightforward, but the fermentation time is lengthy and the yield is low, resulting in high production costs
Solution Approach 1:
The patent applies preliminary action by completing hydrolysis before fermentation begins. The hydrolysis step converts lignocellulose into fermentable sugars in advance, creating an optimized substrate for the subsequent fermentation process. This separation allows each step to be optimized independently, with hydrolysis taking completion before fermentation initiation, thereby improving overall fermentation efficiency and yield while reducing total process time.
2Productivity
If more cellulolytic enzymes are used to increase sugar conversion, then the hydrolysis efficiency improves, but the production cost increases significantly
Solution Approach 1:
The patent extracts and utilizes GH61 polypeptides with cellulolytic enhancing activity as a separate, targeted addition after hydrolysis completion. Rather than relying solely on large quantities of cellulolytic enzymes during hydrolysis, the invention isolates the specific GH61 polypeptide function and applies it post-hydrolysis to enhance sugar conversion during fermentation. This selective extraction and application of specific enzymatic activity reduces overall enzyme requirements and production costs while maintaining high conversion efficiency.
3Productivity
If hydrolysis and fermentation are carried out simultaneously, then the process is simpler and shorter, but the fermentation efficiency is reduced due to incomplete hydrolysis and competing reactions
Solution Approach 1:
The patent applies segmentation by dividing the conversion process into distinct hydrolysis and fermentation stages that are carried out separately in sequence. The hydrolysis step is completed first to maximize sugar release from lignocellulose, followed by a separate fermentation step where GH61 polypeptides are added to enhance fermentation efficiency. This temporal and functional segmentation allows each process to operate under optimal conditions without interference, improving overall fermentation efficiency and yield despite increased process steps.
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 use of GH61 polypeptides significantly enhances ethanol yield and fermentation rate, reducing production costs by optimizing the conversion of lignocellulose into fermentable sugars.
Implementation Method 1
hydrolyzing the material of step (a)
Implementation Method 2
fermenting with a fermenting organism wherein one or more GH61 polypeptides are added after hydrolysis is complete
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to methods of enhancing fermentation for the production of fermentation products. Specifically, the invention relates to enhancing fermentation in processes of producing ethanol from plant material using one or more fermenting organisms.