Recombinant Egg White Protein Production via Host Cell Expression
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Solution Overview
Problem
The growing demand for egg white protein in health-conscious fast food options has led to increased prices and supply uncertainties due to high demand and inhumane industrial egg-laying practices, prompting a need for alternative, animal-free egg white protein production methods that are not dependent on egg stocks and are unaffected by market fluctuations or disease outbreaks.
Innovation Solution
A method involving the recombinant expression of egg white proteins such as ovalbumin, ovotransferrin, and ovomucoid in host cells, followed by mixing and processing to create a consumable product that can include food additives, stabilizers, and pasteurization, allowing for the production of egg white protein compositions that resemble animal-derived egg whites in consistency and functional properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If egg white protein is produced through traditional egg-laying hens, then the protein source is natural and biologically complete, but the production is subject to supply uncertainties, price fluctuations, and ethical concerns regarding industrial hatchery practices
Solution Approach 1:
The patent creates a synthetic copy of egg white protein composition by recombinantly expressing individual egg white proteins (ovalbumin, ovotransferrin, ovomucoid, lysozyme, ovoglobulins, ovomucins) in host cells such as yeast or bacteria. This copying approach produces a composition that mimics natural egg white protein without requiring actual eggs, thereby ensuring supply stability and eliminating ethical concerns while maintaining the functional properties of the original protein mixture
Solution Approach 2:
The patent segments the complex task of producing egg white protein by individually expressing each major egg white protein component through separate recombinant expression systems. Each protein is produced independently in host cells and then combined to form the complete egg white protein composition, allowing for controlled production of each component and simplifying the overall manufacturing process
2Productivity
If egg white demand increases due to health-conscious consumer preferences, then the market appeal and sales volume increase, but the price increases 80% through 2013 and supply becomes uncertain
Solution Approach 1:
The synthetic egg white protein composition replicates the functional properties and protein concentration of natural egg whites through recombinant expression of the five major protein components. This allows production capacity to be scaled independently of egg availability, meeting increasing consumer demand without compromising protein concentration or quality
Solution Approach 2:
The patent optimizes expression parameters in host cells to maximize protein yield and concentration, including controlling growth conditions, induction parameters, and purification protocols. This ensures that the recombinant production system can scale to meet increasing demand while maintaining the required protein concentration levels for food applications
3Productivity
If industrial hatchery practices are used to meet egg demand, then production efficiency increases, but inhumane conditions and stress in factory-farmed hens become apparent
Solution Approach 1:
The patent extracts the desirable functional properties of egg white protein while removing the harmful association with industrial egg-laying practices. By producing the protein recombinantly in microorganisms rather than through hen production, the solution eliminates animal welfare harm while maintaining the nutritional and functional benefits that drive consumer demand
4Reliability
If egg white protein is used in food products, then the functional properties and nutritional value are maintained, but allergenicity concerns and digestibility issues arise
Solution Approach 1:
The patent applies local quality by selectively expressing specific egg white protein variants with modified properties. For example, it expresses ovomucoid variants with reduced allergenicity while maintaining functional properties, and optimizes the ratio of different protein components to enhance digestibility. This allows the composition to have localized improvements in safety while preserving overall functionality
Data Source
AI summary
Provided herein are compositions, proteins, polynucleotides, expression vectors, host cells, kits, and systems for producing egg white proteins, as well as methods of using the same.