Microbial Oil Fermentation for Improved Cold Flow Properties
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Solution Overview
Problem
Current microbial oil production methods struggle to customize fatty acid profiles for improved nutritional and physical properties without genetic modification, leading to oils that are waxy at ambient temperatures, requiring heating for handling, which affects lipid quality and increases processing costs.
Innovation Solution
A fermentation process using Thraustochytrium microorganisms (ATCC Accession No. PTA-6245) with controlled carbon consumption rates (1.5-4.5 g/L per hour) and continuous antifoaming agent addition produces oils with reduced saturated fatty acids, enhancing omega-3 and omega-7 fatty acids, and improved cold flow properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If microbial oils are produced with high saturated fatty acid content, then the oils have improved stability and easier storage, but the oils become waxy at ambient temperature and require heating for handling
Solution Approach 1:
The patent changes the fatty acid composition parameters by controlling the carbon consumption rate (1.5-4.5 g/L per hour) and using continuous antifoaming agent addition during fermentation, which shifts the fatty acid profile to produce oils with reduced saturated fatty acids (less than 35%) and increased unsaturated fatty acids, thereby lowering the pour point to -10 to 15°C and improving handling ease without compromising stability
Solution Approach 2:
The patent implements dynamic control of fermentation parameters including continuous adjustment of carbon consumption rate and continuous antifoaming agent addition, allowing the fermentation process to adaptively produce oils with optimized fatty acid profiles that balance stability and fluidity at ambient temperatures
2Ease of operation
If microbial oils are heated to improve handling, then the oils become easier to process, but lipid stability and quality are negatively affected
Solution Approach 1:
The patent fundamentally changes the physical state parameter of the oil by modifying its fatty acid composition through controlled fermentation, producing oils with pour points of -10 to 15°C that remain liquid at ambient temperatures, thereby eliminating the need for heating and preserving lipid quality without compromising handling ease
3Manufacturing precision
If genetic modification is used to customize fatty acid profile, then the desired nutritional and physical properties are achieved, but the production complexity and cost increase
Solution Approach 1:
The patent enables the microorganism to self-adjust its fatty acid synthesis by controlling environmental fermentation parameters (carbon consumption rate and antifoaming agent addition), allowing the system to autonomously produce oils with desired fatty acid profiles (less than 35% saturated, greater than 37% DHA, 10-30% omega-7) without genetic modification, thereby reducing production complexity while achieving manufacturing precision
4Stability of the object's composition
If additional processing steps are added to maintain lipid quality, then the lipid quality is preserved, but the processing costs increase
Solution Approach 1:
The patent performs preliminary action by optimizing the fermentation process parameters (carbon consumption rate control and continuous antifoaming agent addition) to pre-determine the fatty acid profile of the produced oil, ensuring the oil has reduced saturated fatty acids and improved cold flow properties before extraction, thereby eliminating the need for subsequent heating and additional processing steps to maintain lipid quality, reducing processing costs while preserving lipid quality
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 process results in microbial oils with a pour point of -10 to 15°C, improved nutritional value, and easier handling, reducing the need for heating and associated processing costs.
Implementation Method 1
The methods include culturing oil-producing Thraustochytrium microorganisms in a fermentation medium
Data Source
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AI summary
Provided herein are microbial oils with reduced saturated fatty acids and improved cold flow properties and methods of producing same. The methods include culturing oil-producing microorganisms in a fermentation medium in the presence of one or more antifoaming agents under a controlled carbon consumption rate, wherein the culturing produces oils comprising fatty acids and wherein less than 35% of the fatty acids in the oil are saturated fatty acids.