GH61 Polypeptide and Liquor Enhance Cellulose Hydrolysis

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Solution Overview

Problem

Current methods for enhancing enzymatic hydrolysis of lignocellulosic feedstocks are inefficient, requiring high amounts of cellulolytic enzymes and not fully utilizing the potential of polypeptides with cellulolytic enhancing activity.

Innovation Solution

A composition comprising a polypeptide with cellulolytic enhancing activity and a liquor is used to treat cellulosic materials, enhancing the hydrolysis efficiency by cellulolytic enzymes, thereby reducing the enzyme requirement and improving the conversion of lignocellulosic feedstocks into fermentable sugars.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high amounts of cellulolytic enzymes are used to achieve significant hydrolysis of cellulosic materials, then the hydrolysis efficiency is improved, but the cost and complexity of the process increases

Engineering Contradiction:
Improvehydrolysis efficiencyVSAvoidenzyme requirement
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The patent introduces a polypeptide as an intermediary substance that enhances the activity of cellulolytic enzymes. This polypeptide acts as a mediator between the enzymes and the cellulosic substrate, improving hydrolysis efficiency without requiring proportional increases in enzyme quantity. The polypeptide appears to facilitate enzyme-substrate interaction or stabilize enzyme activity, thereby resolving the contradiction between maintaining high productivity and reducing enzyme consumption.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent modifies the chemical environment by adding a liquor containing specific chemical components that change the reaction parameters. This liquor likely alters pH, ionic strength, or other chemical conditions to optimize enzyme performance. By changing these parameters, the system achieves enhanced hydrolysis efficiency with reduced enzyme requirements, as the optimized conditions allow each enzyme molecule to work more effectively.

Inventive Principle:
Principle #35Parameter changes

2Speed

If high amounts of cellulolytic enzymes are used to achieve significant hydrolysis of cellulosic materials, then the hydrolysis rate is improved, but the process cost increases

Engineering Contradiction:
Improvehydrolysis rateVSAvoidenzyme requirement
Core Design Contradiction:
SpeedVSQuantity of substance

Solution Approach 1:

The polypeptide serves as a catalyst enhancer or activator that increases the turnover rate of cellulolytic enzymes. By introducing this intermediary, the hydrolysis rate accelerates because the polypeptide may facilitate faster substrate binding, improve catalytic efficiency, or prevent enzyme deactivation. This allows the system to achieve high hydrolysis rates without proportionally increasing enzyme quantity, thereby controlling costs.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The liquor added to the system changes key reaction parameters such as pH, temperature stability, or ionic environment, creating optimal conditions for rapid enzyme-catalyzed hydrolysis. These parameter changes enable the enzymes to operate at peak efficiency, achieving faster hydrolysis rates with lower enzyme concentrations, thus reducing the quantity of expensive enzyme substrate required.

Inventive Principle:
Principle #35Parameter changes

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 combination of the polypeptide and liquor significantly enhances the hydrolysis of cellulosic materials, increasing the efficiency of converting lignocellulosic biomass into ethanol, with improved saccharification and fermentation product yields.

Implementation Method 1

enhances hydrolysis of a cellulosic material by a cellulolytic enzyme

Methodology Applied
Scientific EffectHydrolysis: Hydrolysis

Implementation Method 2

hydrolysis of beta-linked glucans. These enzymes include endoglucanases, cellobiohydrolases, and beta-glucosidases

Methodology Applied
Scientific EffectEnzyme catalysis: Enzyme

Data Source

PatentUS11085061B2Compositions comprising a GH61 polypeptide having cellulolytic enhancing activity and a liquor and method of using thereof
Publication Date: 2021.08.10 NOVOZYMES INC
  • US11085061B2 patent drawing
  • US11085061B2 patent drawing
  • US11085061B2 patent drawing

AI summary

The present invention relates to compositions comprising: a polypeptide having cellulolytic enhancing activity and a liquor. The present invention also relates to methods of using the compositions.