PAW Vacuum Packaging for Red Meat Color Retention and Shelf Life
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Solution Overview
Problem
Existing packaging methods for red meat, such as modified atmosphere packaging (MAP) and vacuum packaging, either lead to undesirable color changes or require complex gas management, resulting in high costs and short shelf life, while plasma technology's potential for color retention and antibacterial effects has not been fully utilized.
Innovation Solution
A system and method using plasma active water (PAW) vacuum packaging, comprising a plasma treatment chamber, atomization spray module, and vacuum packaging module, to prepare and apply PAW containing NO2− and NO3− ions for color retention and antibacterial properties, eliminating the need for complex gas distribution and reducing packaging space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If modified atmosphere packaging (HIOX MAP) is used to maintain fresh red color, then color stability is improved, but lipid oxidation accelerates and shelf life shortens
Solution Approach 1:
PAW serves as an intermediary substance applied to the meat surface before vacuum packaging. It generates nitrite and nitrate ions that act as color retention agents, allowing the meat to maintain red color in vacuum packaging without requiring oxygen-containing atmospheres, thereby preventing lipid oxidation while extending shelf life
Solution Approach 2:
The invention changes the chemical parameters of the packaging system by introducing PAW-treated surfaces with controlled nitrite and nitrate concentrations. This allows color retention through chemical reactions with myoglobin without needing high oxygen concentrations, thus avoiding oxidative damage while maintaining color stability
2Duration of action of stationary object
If vacuum packaging is used to extend preservation time, then shelf life is improved, but color becomes dark purple and unappealing
Solution Approach 1:
The meat surface is preliminarily treated with PAW before vacuum packaging. This preliminary action introduces nitrite and nitrate ions that react with myoglobin to form stable colored compounds, ensuring the meat maintains its red appearance throughout the vacuum packaging period without becoming dark purple
Solution Approach 2:
PAW acts as an intermediary that provides color-retaining chemicals (nitrite and nitrate) to the meat surface. These intermediaries enable the meat to resist vacuum-induced color changes while maintaining consumer-appealing appearance throughout extended storage
3Stability of the object's composition
If CO MAP is used to maintain stable cherry color, then color stability is improved, but packaging cost increases due to CO requirements
Solution Approach 1:
The invention replaces expensive CO gas with a disposable PAW treatment applied to the packaging surface. The PAW-containing package liner provides color retention through chemically treated surfaces, eliminating the need for continuous CO gas supply and complex gas management systems, thereby reducing packaging costs while maintaining color stability
4Stability of the object's composition
If HIOX MAP is used to maintain fresh red color, then color is improved, but protein oxidation increases and tenderness reduces
Solution Approach 1:
The invention creates an inert vacuum environment combined with PAW-treated surfaces that prevent oxidative reactions. By eliminating oxygen and providing color retention through nitrite/nitrate chemistry rather than oxygen-based mechanisms, the system protects proteins from oxidation while maintaining color and tenderness
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 system effectively maintains the fresh red color and enhances antibacterial properties of vacuum-packaged red meat, extending shelf life and reducing waste by using PAW's color retention and antibacterial capabilities, while being economical and space-efficient.
Implementation Method 1
Plasma technology is a new type of non-thermal processing technology. Plasma is obtained by inputting energy to excite gas. The active components produced, such as reactive oxygen species (ROS) and reactive nitrogen species (RNS)
Implementation Method 2
When ROS and RNS enter the liquid phase from the gas phase, especially when RNS dissolves in water, considerable NO2− and NO3− ions will be generated. It is known that nitrite and nitrate are commonly used color retention agents for meat products
Implementation Method 3
Vacuum packaging provides an oxygen-deficient environment, so it can inhibit the growth and reproduction of microorganisms and the oxidation of lipids and proteins for a long time
Implementation Method 4
PAW, containing other active components such as H2O2, has excellent antibacterial ability, further improving the antibacterial ability of vacuum packaging
Data Source
AI summary
A system for preserving red meat by plasma active water (PAW) vacuum packaging includes a solution mixing tank, a plasma treatment chamber, an atomization spray module, a conveyor belt, a water circulation module, and a vacuum packaging module. The solution mixing tank, the plasma treatment chamber, the atomization spray module, and the water circulation module are sequentially connected through pipes. The atomization spray module is configured to spray PAW onto the red meat on the conveyor belt, and then the vacuum packaging module is configured to vacuum-package the red meat. Utilizing PAW improves the antibacterial ability of vacuum packaging while enhancing the color stability of red meat, greatly extending the shelf life of red meat, thereby preserving red meat in a green and economical way.