Biodegradable Polymer Coating with Lysozyme for Food Contact Surfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current food containers do not effectively inhibit bacterial growth and are not biodegradable, posing a risk to food safety and environmental sustainability.
Innovation Solution
A food contact article composed of at least 50 weight percent biodegradable polymer and 0.1-1.0 weight percent antimicrobial agent, preferably polyhydroxyalkanoates and lysozyme, applied as a coating or spray on substrates like paperboard, to create a surface that inhibits bacterial growth while being biodegradable and compostable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional materials are used for food containers, then manufacturing cost and ease of manufacture are maintained, but antimicrobial protection and biodegradability are lacking
Solution Approach 1:
The patent applies composite materials by combining biodegradable polymer基材 with antimicrobial agents (such as silver nanoparticles, zinc oxide, or natural antimicrobials like chitosan and essential oils) to create a multi-functional food contact article that provides both structural integrity and antimicrobial protection
Solution Approach 2:
The patent changes the chemical composition parameters of the food contact article by incorporating specific concentrations of antimicrobial agents (e.g., 0.1-5% by weight) and selecting biodegradable polymers with specific molecular weights and degradation rates to achieve desired food safety and environmental properties
2Reliability
If biodegradable materials are used, then environmental sustainability is improved, but antimicrobial effectiveness may be reduced
Solution Approach 1:
The patent creates composite structures where biodegradable polymers (such as polylactic acid, polyhydroxyalkanoates, or starch-based materials) are combined with antimicrobial additives to achieve both environmental sustainability and bacterial inhibition capabilities
Solution Approach 2:
The patent applies antimicrobial agents specifically at the food contact surface where bacterial contamination is most likely to occur, while the bulk material maintains its biodegradable properties for environmental sustainability
3Object-affected harmful factors
If antimicrobial agents are added to biodegradable polymers, then bacterial inhibition is improved, but material stability and degradation control become more complex
Solution Approach 1:
The patent designs single-use food contact articles with controlled degradation rates, where the biodegradable polymer matrix is formulated to maintain stability during normal use but decompose after disposal, with antimicrobial agents providing protection throughout the service life
Solution Approach 2:
The patent uses encapsulation technologies or coating layers as intermediaries to protect the antimicrobial agents from premature release while maintaining polymer stability, allowing controlled release or activation under specific conditions such as moisture exposure or pH changes
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 solution effectively reduces bacterial contamination on food contact surfaces, enhancing food safety and environmental sustainability by using biodegradable materials that inhibit microbial growth without degrading the polymer.
Implementation Method 1
the antimicrobial agent is made up of lysozyme in an amount from about 0.1 to about 1.0 weight percent of the food contact article
Data Source
AI summary
The present disclosure provides a food contact article. According to one embodiment, the food contact article includes at least one food contact surface. This at least one food contact surface is made up of at least 50 weight percent of at least one biodegradable polymer, such as polyhydroxyalkanoates, and from about 0.1 weight percent to about 1.0 weight percent of at least one antimicrobial agent.