Recombinant Microorganisms for Hydroxy Fatty Acid Production

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Solution Overview

Problem

The natural occurrence of hydroxy fatty acids and secondary fatty alcohols is limited, making it challenging to produce them in sufficient quantities for industrial applications, as they are found only in trace amounts in plants.

Innovation Solution

Development of recombinant microorganisms expressing lipoxygenase and Chlorella-derived decarboxylase genes to catalyze the production of hydroxy fatty acids and secondary fatty alcohols from unsaturated fatty acids through whole-cell biotransformation processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If hydroxy fatty acids and secondary fatty alcohols are obtained from natural plants, then the products are naturally occurring and safe, but the production quantity is limited to trace amounts

Engineering Contradiction:
Improveproduction quantityVSAvoidproduction feasibility
Core Design Contradiction:
Quantity of substanceVSEase of manufacture

Solution Approach 1:

The patent utilizes whole-cell biotransformation where recombinant microorganisms express lipoxygenase and decarboxylase enzymes to automatically catalyze the conversion of unsaturated fatty acids into hydroxy fatty acids and secondary fatty alcohols. The system serves itself by using the microorganism's own metabolic machinery to produce the target compounds, eliminating the need for complex external catalysis or extraction processes from natural plants.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent changes the production parameters by introducing recombinant genes (lipoxygenase and decarboxylase) into microorganisms, fundamentally altering their metabolic capabilities. This genetic modification enables the microorganisms to produce hydroxy fatty acids and secondary fatty alcohols in high quantities, transforming them from trace natural products to industrially producible chemicals through controlled biological synthesis.

Inventive Principle:
Principle #35Parameter changes

2Quantity of substance

If chemical synthesis methods are used to produce hydroxy fatty acids and secondary fatty alcohols, then the production quantity can be increased, but the environmental friendliness and selectivity are reduced

Engineering Contradiction:
Improveproduction quantityVSAvoidenvironmental impact
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent replaces chemical synthesis mechanisms with biological catalysis mechanisms. Instead of using chemical reagents and harsh conditions to synthesize hydroxy fatty acids and secondary fatty alcohols, the system uses enzymatic catalysis by lipoxygenase and decarboxylase enzymes expressed in recombinant microorganisms. This substitution provides high selectivity, mild reaction conditions, and environmental friendliness while maintaining high production quantities.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces recombinant microorganisms as intermediary biocatalysts to mediate the transformation of unsaturated fatty acids into hydroxy fatty acids and secondary fatty alcohols. These microorganisms serve as living factories that perform the chemical transformations through their expressed enzymes, providing a sustainable and environmentally friendly alternative to direct chemical synthesis methods.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Quantity of substance

If traditional extraction methods are used to obtain hydroxy fatty acids and secondary fatty alcohols from plants, then the natural purity is maintained, but the production cost and time consumption increase

Engineering Contradiction:
Improveproduction quantityVSAvoidproduction time
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The patent performs preliminary action by pre-engineering the microorganisms to express the necessary enzymes (lipoxygenase and decarboxylase) before the actual production process. The recombinant microorganisms are prepared in advance with the genetic machinery in place, allowing them to immediately begin catalyzing the conversion of unsaturated fatty acids into target products when provided with the appropriate substrates, thus eliminating lengthy extraction and purification steps from natural plants.

Inventive Principle:
Principle #10Preliminary action

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 recombinant microorganisms effectively convert unsaturated fatty acids into hydroxy fatty acids and secondary fatty alcohols, providing a viable method for their production and utilization in various industrial applications.

Implementation Method 1

preparing hydroperoxy fatty acids by reacting the recombinant microorganisms with unsaturated fatty acids

Methodology Applied
Scientific EffectOxidation: Oxidation

Implementation Method 2

recombinant microorganisms co-expressing lipoxygenase and Chlorella-derived decarboxylase

Methodology Applied
Scientific EffectDecarboxylation: Decomposition (biological)

Data Source

PatentUS20240175062A1Lipoxygenase-based recombinant microorganisms, and method forpreparing hydroxy fatty acids and secondary fatty alcohols using same
Publication Date: 2024.05.30 EWHA UNIV IND COLLABORATION FOUND
  • US20240175062A1 patent drawing
  • US20240175062A1 patent drawing
  • US20240175062A1 patent drawing

AI summary

The present invention relates to: recombinant microorganisms expressing lipoxygenase; and recombinant microorganisms co-expressing lipoxygenase and Chlorella-derived decarboxylase. It was confirmed that when using lipoxygenase-based recombinant microorganisms according to the present invention as whole-cell biocatalysts, hydroxy fatty acids can be produced from unsaturated fatty acids. In addition, it was confirmed that when using the recombinant microorganisms co-expressing lipoxygenase and Chlorella-derived decarboxylase as whole-cell biocatalysts, secondary fatty alcohols can be produced from unsaturated fatty acids. Thus, the recombinant microorganisms constructed in the present invention can be used in various ways in the field of hydroxy fatty acid and secondary fatty alcohol production.