Animal-Free Streptococcus Culture Using Catalase Agar
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Solution Overview
Problem
The use of animal-derived materials in bacterial cultivation for vaccine production introduces contaminants like prion proteins, mycoplasma, and viruses, necessitating the development of methods that do not rely on these materials.
Innovation Solution
A method for in vitro bacterial cultivation using an agar medium free of animal-derived materials, supplemented with a catalase enzyme, which supports the growth of catalase-negative bacteria, allowing for the selection and harvesting of bacterial colonies without animal-derived contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If animal-derived materials are used in bacterial cultivation, then bacterial growth is supported and nutrient requirements are met, but contamination with prion proteins, mycoplasma, and viruses is introduced
Solution Approach 1:
The patent extracts and removes animal-derived materials from the culture medium while retaining the essential nutrients and growth-supporting properties. The medium is reformulated using plant-based or synthetic alternatives that provide necessary nutrients without introducing animal contaminants such as prion proteins, mycoplasma, and viruses.
Solution Approach 2:
The patent introduces catalase enzyme as a key intermediary component in the animal-free culture medium. This enzyme mediates the breakdown of hydrogen peroxide, creating a reducing environment that supports catalase-negative bacteria growth without requiring animal-derived factors, thus bridging the gap between animal-free composition and effective bacterial cultivation.
2Object-affected harmful factors
If animal-derived materials are eliminated from culture medium, then contamination risk is reduced, but bacterial growth support may be compromised
Solution Approach 1:
The patent modifies the chemical and physical parameters of the culture medium by incorporating catalase enzyme and adjusting the composition to create optimal growth conditions for catalase-negative bacteria. This includes controlling hydrogen peroxide levels, pH, and nutrient availability to ensure robust bacterial growth in the absence of animal-derived materials.
Solution Approach 2:
The patent develops a composite culture medium formulation that combines plant-based extracts, synthetic nutrients, and catalase enzyme to replace animal-derived components. This composite material provides a synergistic combination of nutrients and protective factors that support bacterial growth without introducing animal contaminants.
3Manufacturing precision
If catalase-negative bacteria are cultivated without animal-derived materials, then product purity is improved, but cultivation complexity increases due to specialized medium requirements
Solution Approach 1:
The patent segments the cultivation process into distinct phases with optimized medium formulations for each stage. The culture medium is divided into base components and supplemental components (including catalase), allowing for standardized preparation and reduced complexity in maintaining high product purity throughout the cultivation process.
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 cultivation of catalase-negative bacteria without animal-derived contaminants, reducing the risk of contamination and improving polysaccharide production efficiency, while ensuring the production of high-purity bacterial stocks for pharmaceutical and biological products.
Implementation Method 1
the agar medium comprises a catalase enzyme... incubating the catalase-negative bacteria on the agar medium under conditions permitting growth
Data Source
AI summary
The present disclosure provides methods, compositions, and kits for in vitro cultivation of catalase-negative bacteria. The present disclosure further provides catalase-negative bacteria cultivated according to the methods described herein and bacterial stocks thereof.