Microbial Organisms for Primary Alcohol Production
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing primary alcohols are inefficient and costly, as they often result in low yields of secondary or tertiary alcohols and ketones, and rely on expensive feedstocks like ethylene, with existing biosynthetic pathways being energy-intensive and multi-step.
Innovation Solution
Development of non-naturally occurring microbial organisms with a malonyl-CoA-independent fatty acid synthesis pathway and an acyl-reduction pathway, expressing specific enzymes to produce primary alcohols under anaerobic conditions, allowing for higher yields and the use of renewable feedstocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If oxidation of n-paraffins is used to produce primary alcohols, then production process is simplified, but yield of primary alcohols is low and mixture of secondary alcohols, tertiary alcohols or ketones is produced
Solution Approach 1:
The invention changes the biochemical parameters of the organism by introducing heterologous genes (fadE, fabG, fabH) to create a malonyl-CoA-independent fatty acid synthesis pathway. This parameter change in the metabolic route enables high-selectivity production of primary alcohols from n-paraffin oxidation, resolving the contradiction between process simplification and product selectivity.
2Productivity
If current biosynthetic pathways are used for LCA production, then fatty acid synthesis occurs, but energy consumption is high and product yield is low
Solution Approach 1:
The invention extracts and eliminates the malonyl-CoA-dependent steps from the fatty acid synthesis pathway by introducing a malonyl-CoA-independent pathway. This removal of energy-intensive steps (malonyl-CoA formation requiring ATP) directly reduces energy consumption and increases productivity of long-chain alcohol production.
Solution Approach 2:
The invention changes the biochemical parameters by introducing heterologous genes (fadE, fabG, fabH) to create a malonyl-CoA-independent fatty acid synthesis pathway. This parameter change eliminates ATP-consuming steps in the pathway, directly reducing energy consumption and increasing product yield.
3Ease of manufacture
If ethylene is used as feedstock for primary alcohol production, then production process is established, but feedstock cost is high
Solution Approach 1:
The invention changes the substrate parameter by enabling the organism to utilize n-paraffins directly through the introduced malonyl-CoA-independent pathway. This parameter change in substrate utilization allows replacement of expensive ethylene feedstock with cheaper n-paraffins, reducing feedstock cost while maintaining process establishment.
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 approach enables the production of primary alcohols with higher product and ATP yields, reducing production costs and energy consumption, while utilizing low-cost renewable feedstocks, thereby improving the efficiency and sustainability of the process.
Implementation Method 1
ketoacyl-CoA acyltransferase or ketoacyl-CoA thiolase
Implementation Method 2
3-hydroxyacyl-CoA dehydrogenase
Implementation Method 3
enoyl-CoA hydratase
Implementation Method 4
acyl-CoA reductase
Implementation Method 5
alcohol dehydrogenase
Data Source
AI summary
The invention provides a non-naturally occurring microbial organism having a microbial organism having at least one exogenous gene insertion and/or one or more gene disruptions that confer production of primary alcohols. A method for producing long chain alcohols includes culturing these non-naturally occurring microbial organisms.