Microbial Protein Concentrate Fermentation for Fish Meal Replacement
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Solution Overview
Problem
The existing methods for producing fish meal protein from wild capture fisheries are unsustainable and costly, and plant-derived protein sources like soybean meal and soy protein concentrate have limitations such as high cost, anti-nutritional factors, and quality issues, limiting their inclusion in aquaculture diets.
Innovation Solution
A microbial-based process using Aureobasidium pullulans fermentation to convert plant materials into a high-quality protein concentrate (HQPC) with reduced anti-nutritional factors and increased digestibility, suitable for animal feeds and human consumption, achieving a protein content of 65-75% and ash content less than 2.5%, and producing a microbial gum binder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solvent extraction process is used to produce soy protein concentrate, then protein bioavailability is improved and anti-nutritional factors are removed, but processing cost increases and environmental pollution occurs
Solution Approach 1:
The patent converts the harmful anti-nutritional factors (oligosaccharides) present in soybeans into beneficial products through microbial fermentation. The oligosaccharides serve as carbon sources for microbial growth, transforming them from harmful substances to useful nutrients that enhance protein quality and reduce processing costs.
Solution Approach 2:
The patent replaces the mechanical/chemical solvent extraction process with a biological fermentation process. Instead of using hexane to extract proteins, the invention uses microbial enzymes to degrade anti-nutritional factors and synthesize high-quality protein, eliminating the need for costly chemical solvents and associated environmental cleanup.
2Adaptability or versatility
If plant-derived protein sources are used to replace fish meal, then sustainability is improved, but amino acid profile completeness deteriorates
Solution Approach 1:
The patent changes the biochemical parameters of plant protein through microbial fermentation. The fermentation process modifies amino acid composition, increases protein digestibility, and synthesizes essential amino acids that are deficient in raw plant materials, thereby transforming incomplete amino acid profiles into complete profiles suitable for carnivorous fish.
Solution Approach 2:
The invention creates a composite protein product by combining plant-derived proteins with microbial biomass and metabolic products. This composite approach integrates the sustainability benefits of plant-based materials with the nutritional completeness of animal proteins, achieving both goals simultaneously.
3Reliability
If microbial fermentation is used to convert plant material, then protein quality and digestibility are improved, but process complexity increases
Solution Approach 1:
The patent employs self-service principles by using the plant material itself as the substrate for microbial fermentation. The plant proteins and carbohydrates serve dual purposes: as the final protein product and as the carbon and energy sources for the microorganisms, eliminating the need for separate feedstock preparation and reducing overall process complexity.
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 HQPC achieves high protein digestibility and reduced anti-nutritional factors, allowing up to 70% replacement of fish meal in aquaculture diets, improving growth performance and feed efficiency in fish and shrimp, and enhancing the sensory characteristics of meat substitutes.
Implementation Method 1
A microbial-based process using Aureobasidium pullulans fermentation to convert plant materials into a high-quality protein concentrate
Implementation Method 2
The HQPC achieves high protein digestibility and reduced anti-nutritional factors, allowing up to 70% replacement of fish meal in aquaculture diets
Data Source
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AI summary
The present invention describes a bio-based process to produce high quality protein concentrate (HQPC) by converting plant derived celluloses and carbohydrates into bioavailable protein via aerobic incubation, including the use of such HQPC so produced as a nutrient, including use as a fish meal replacement in aquaculture diets.