Antimicrobial Produce Packaging Coating for Browning and Moisture Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing packaging solutions for fresh produce face challenges such as the use of harmful sulfur dioxide generating compounds, complexity and cost in multi-layer materials, and environmental impact, while lacking a simple, effective, and eco-friendly preservative and/or antimicrobial product.
Innovation Solution
A preservative and/or antimicrobial composition comprising calcium chloride, sodium chloride, calcium hypochlorite, nano-silver, and dessicants, combined with a solvent-based coating, applied to various substrates like polyethylene and paper, providing a cost-effective and recyclable/biodegradable solution for preserving fruits and vegetables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional packaging materials are used, then manufacturing cost is low and ease of manufacture is good, but antimicrobial protection is insufficient and product safety deteriorates
Solution Approach 1:
The patent applies composite materials by combining a polymer matrix with metal oxide nanoparticles (such as silver, zinc oxide, or copper oxide) dispersed throughout the packaging material. This composite structure provides both the mechanical properties of the polymer and the antimicrobial properties of the metal oxide particles, achieving enhanced antimicrobial protection while maintaining manufacturability through standard polymer processing techniques.
Solution Approach 2:
The patent utilizes porous materials by incorporating porous metal oxide structures or creating a porous network within the packaging material. The porous structure increases the surface area available for antimicrobial action while allowing the material to be processed using conventional techniques. The porosity enables better contact with microorganisms and enhances the release of antimicrobial ions.
2Reliability
If antimicrobial agents are added to packaging, then product safety improves, but material composition complexity increases
Solution Approach 1:
The patent employs disposable packaging materials containing metal oxide nanoparticles that are integrated directly into the packaging structure. These nanoparticles serve as long-lasting antimicrobial agents without requiring complex delivery systems or multiple components. The packaging material itself becomes the antimicrobial barrier, simplifying the overall composition while maintaining product safety throughout the shelf life.
Solution Approach 2:
The patent applies parameter changes by controlling the size, concentration, and distribution of metal oxide nanoparticles within the packaging material. By optimizing these parameters, the material achieves effective antimicrobial protection with minimal added complexity. The nanoparticles are dispersed at specific concentrations and sizes that maximize antimicrobial activity while maintaining material homogeneity and processing ease.
3Reliability
If packaging material is made more protective, then antimicrobial performance improves, but permeability to oxygen and carbon dioxide may deteriorate
Solution Approach 1:
The patent applies local quality by creating regions within the packaging material with different properties. The metal oxide nanoparticles are distributed throughout the polymer matrix, providing localized antimicrobial activity without creating continuous barriers to gas transport. The polymer matrix maintains its original permeability characteristics while the dispersed nanoparticles provide antimicrobial protection at specific locations within the material structure.
Solution Approach 2:
The patent utilizes porous materials by incorporating controlled porosity into the packaging structure. The porous metal oxide particles or porous network structures allow gas molecules to pass through while providing surfaces for antimicrobial action. This porosity maintains oxygen and carbon dioxide permeability necessary for product respiration while the porous metal oxide components provide enhanced antimicrobial performance.
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 prevents microbial growth, browning, and dessication, while being environmentally friendly and cost-effective, suitable for packaging sensitive produce like berries.
Implementation Method 1
The packaging material may be used to package food or other products and may have antimicrobial properties to help prevent contamination
Implementation Method 2
The packaging material may comprise a polymer matrix and metal oxide particles dispersed throughout the polymer matrix
Data Source
Figure 1
AI summary
This invention relates to a preservative and/or antimicrobial composition for inclusion in an active substrate and/or a solvent-based coating for preservation of fruit, vegetables or herbs as well as an active substrate including the preservative and/or antimicrobial composition, or a solvent-based coating composition including the preservative and/or antimicrobial composition, or an active substrate including the preservative and/or antimicrobial composition and coated with the solvent-based coating composition including the preservative and/or antimicrobial composition for use in the preservation of fruit, vegetables or herbs.