Solid Fermentation Medium for Glucosamine Production
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Solution Overview
Problem
Current methods for producing glucosamine, such as acid hydrolysis and enzymatic hydrolysis, face challenges including high production costs, low yields, environmental concerns, and the need for large fermentation volumes, which are not efficiently addressed by traditional liquid fermentation processes.
Innovation Solution
A solid medium comprising coffee grounds, rice bran, or wheat bran as substrates, supplemented with KH2PO4, NaCl, and MgSO4.7H2O, is used for microbial fermentation to produce glucosamine, optimizing yields and reducing costs by utilizing a more efficient and environmentally friendly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If liquid fermentation is used to produce glucosamine, then production can be carried out continuously, but large fermentation volumes are required resulting in high costs and intense management
Solution Approach 1:
The patent changes the physical state of the fermentation medium from liquid to solid form. By using solid substrates (coffee grounds, rice bran, wheat bran) instead of liquid medium, the fermentation process achieves higher cell density and glucosamine production per unit volume, thereby reducing the total fermentation volume required while maintaining continuous production capability
Solution Approach 2:
The patent uses composite solid substrates made from agricultural waste materials (coffee grounds, rice bran, wheat bran) combined with supplemental solutions containing specific nutrients (KH2PO4, NaCl, MgSO4.7H2O). This composite approach creates an effective solid fermentation medium that supports high-yield glucosamine production in a compact form
2Productivity
If acid hydrolysis is used to produce glucosamine, then production can be achieved, but acid waste treatment problems occur and production costs increase
Solution Approach 1:
The patent replaces the chemical acid hydrolysis process with a biological fermentation process using microorganisms. Instead of using strong acids to break down chitin and chitosan, the invention employs microbial enzymes to convert solid substrates into glucosamine, thereby eliminating acid waste generation while maintaining production capability
Solution Approach 2:
The patent converts agricultural waste materials (coffee grounds, rice bran, wheat bran) which would otherwise be discarded or cause environmental problems, into valuable glucosamine production substrates. This approach transforms potential harmful waste into beneficial resources, reducing environmental impact while producing the desired product
3Object-affected harmful factors
If enzymatic hydrolysis is used to produce glucosamine, then waste treatment problems are reduced, but production costs increase due to high enzyme prices and yields remain low
Solution Approach 1:
The patent enables the microorganisms to produce their own digestive enzymes during the fermentation process. The microorganisms synthesize chitinases and chitosanases endogenously to break down the solid substrates, eliminating the need for external enzyme additions. This self-service approach significantly reduces production costs while maintaining effective substrate degradation and glucosamine production
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 solid medium approach significantly increases glucosamine yields and reduces production costs, while minimizing environmental impact and operational expenses, providing a more sustainable method for glucosamine production.
Implementation Method 1
fermenting the microorganism in a solid medium
Data Source
AI summary
The invention relates to solid medium for producing glucosamine, including a substrate and 0.15-4.8 mL/g substrate of supplemental solution, which includes 0.1-2 g/L KH2PO4, 0.1-2 g/L NaCl, and 0.1-2 g/L MgSO4.7H2O. The invention also relates to a method for producing glucosamine, including providing microorganism being able to produce glucosamine, and fermenting the microorganism in the medium mentioned above.