L-Homoserine Preparation via Solid Acid Catalyst Hydrolysis

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Solution Overview

Problem

Current methods for producing L-homoserine are inefficient and result in low purity and recovery rates, with environmental concerns due to petrochemical processes, necessitating a sustainable biosynthesis approach.

Innovation Solution

A method involving the use of an L-homoserine derivative and a solid acid catalyst, such as a cation exchange resin, for hydrolysis to produce L-homoserine with high purity and recovery rates, utilizing a fermentation broth and optimizing reaction conditions like pH and temperature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If petrochemical processes are used to produce compounds, then industrial supply is achieved, but environmental harm and resource depletion occur

Engineering Contradiction:

Improveindustrial supply capabilityVSAvoidenvironmental harm

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the fundamental parameter of the production system from petrochemical to bio-based fermentation processes. By using microorganisms to ferment sugars into homoserine and subsequent amino acids, the process transforms harmful petrochemical production into an environmentally sustainable biological process that eliminates harmful by-products while maintaining industrial productivity.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts the limitation of fossil fuel reserves and environmental harm into benefit by developing alternative bio-based production routes. The fermentation process using renewable sugar sources transforms the harmful dependency on finite petrochemical resources into a sustainable production system that benefits both industry and environment.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Productivity

If conventional homoserine preparation methods are used, then production is achieved, but purity and recovery rate are low

Engineering Contradiction:

Improveproduction efficiencyVSAvoidpurity and recovery rate

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent introduces an intermediate compound (O-acetyl-L-homoserine or O-succinyl-L-homoserine) as a mediator in the synthesis pathway. This intermediate serves as a stable precursor that can be selectively produced by fermentation and then efficiently converted to L-homoserine through controlled hydrolysis, thereby improving both the purity of the final product and the recovery rate by preventing side reactions.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent performs preliminary fermentation to produce the intermediate compound (O-acetyl-L-homoserine or O-succinyl-L-homoserine) before the final hydrolysis step. This preliminary action allows for selective production and accumulation of the intermediate with high purity, which is then converted to L-homoserine in a controlled manner, ensuring high recovery rate and minimizing losses.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If complex production processes are used, then various compounds can be produced, but process complexity and maintenance costs increase

Engineering Contradiction:

Improvecompound production capabilityVSAvoidprocess complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs a universal fermentation platform using microorganisms that can produce multiple valuable compounds (homoserine, methionine, threonine, isoleucine) from the same sugar-based medium. This multi-functional approach eliminates the need for separate complex production lines for each amino acid, thereby reducing overall process complexity and maintenance costs while maintaining versatility in compound production.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent segments the production process into distinct modular stages: (1) fermentation to produce intermediate compound, (2) purification of intermediate, (3) hydrolysis to final product, and (4) product recovery. This segmentation allows each stage to be optimized independently and simplifies maintenance and operation compared to integrated complex processes.

Inventive Principle:

Principle #1Segmentation

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

This method significantly improves the production efficiency, purity, and recovery rate of L-homoserine, reduces maintenance costs, and facilitates easy catalyst recycling, enhancing economic efficiency and environmental sustainability.

Implementation Method 1

contacting an L-homoserine derivative represented by the following Formula 1 with a solid acid catalyst

Methodology Applied

Scientific EffectCatalysis: Catalysis

Implementation Method 2

A method involving the use of an L-homoserine derivative and a solid acid catalyst, such as a cation exchange resin, for hydrolysis to produce L-homoserine

Methodology Applied

Scientific EffectHydrolysis: Hydrolysis