Aspergillus Oryzae Fermentates for Food-Grade Antimicrobial Control
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Solution Overview
Problem
The rise of antibiotic-resistant microbes, such as Listeria monocytogenes, Staphylococcus aureus, and Salmonella strains, poses a significant threat to food safety and public health, necessitating the development of effective antimicrobial compositions that can inhibit their growth and proliferation.
Innovation Solution
Production of Aspergillus oryzae fermentates using yeast extract or amino acids as culture substrates, which are then filtered to create cell-free compositions with strong antimicrobial activity against a wide range of pathogens, including bacteria and fungi.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional antibiotics and food processing methods are used to control microbial growth, then microbial proliferation is inhibited, but microbial resistance to these methods develops
Solution Approach 1:
The patent changes the chemical parameters of the antimicrobial agent by using fungal fermentates with different molecular structures and modes of action compared to traditional antibiotics. This parameter change in the antimicrobial mechanism prevents microbial resistance development while maintaining effectiveness against resistant strains
Solution Approach 2:
The patent converts the harmful effect of microbial resistance into a benefit by using natural fungal metabolites that have broad-spectrum activity against resistant pathogens. The fermentates transform the problem of resistance into an opportunity to use nature-derived compounds with novel mechanisms that bypass resistance
2Productivity
If casein-containing media are used to culture Aspergillus oryzae, then protein availability for growth is improved, but the fermentate becomes less suitable for food applications
Solution Approach 1:
The patent extracts and removes casein from the culture medium, replacing it with casein-free protein sources. This extraction of the problematic component maintains productivity while ensuring the fermentate remains suitable for food applications by eliminating allergens and unwanted proteins
Solution Approach 2:
The patent changes the chemical composition parameters of the culture medium by substituting casein with alternative protein sources such as soy protein, pea protein, or other vegetable proteins. This parameter change in the medium composition enables both high productivity and food-grade suitability
3Reliability
If high concentrations of amino acids are used in the culture medium, then fungal growth and antimicrobial compound production are enhanced, but production costs increase
Solution Approach 1:
The patent optimizes the amino acid concentration parameters in the culture medium to achieve the minimum effective level required for producing potent fermentates. By carefully adjusting this parameter, the patent reduces amino acid usage while maintaining reliable antimicrobial activity, thereby lowering production costs
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 Aspergillus oryzae fermentates exhibit heat-stable antimicrobial properties, effectively inhibiting the growth of antibiotic-resistant bacteria and fungi, making them suitable for food and medical applications while avoiding the development of microbial tolerance.
Implementation Method 1
culturing the inoculated medium to produce a fermentate
Data Source
AI summary
The present invention provides antimicrobial compositions comprising an Aspergillus oryzae fermentate and methods of making said antimicrobial compositions. Also provided are products comprising the antimicrobial compositions as well as methods of using the compositions to prevent the growth of a microbe in or on a food product, surface, or subject or for use in skin care or hair growth.