Pulsed Electrical Stimulation for Poultry Meat Tenderization
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Solution Overview
Problem
Poultry meat often becomes tough due to premature deboning before rigor mortis is fully developed, leading to inefficiencies in processing and tenderness preservation.
Innovation Solution
Applying a pulsed electrical voltage of at least 350 milliamps across the poultry carcass to accelerate the onset of rigor mortis and tenderize the meat, using an apparatus with a conveyor system and electrical stimulator that generates a high-amperage current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If deboning is performed early in the processing line (at approximately three hours post mortem), then processing efficiency and productivity are improved, but the meat becomes tough because rigor mortis has not fully developed
Solution Approach 1:
Electrical stimulation is applied to the poultry carcass before deboning to accelerate rigor mortis development. This preliminary action ensures that the muscle fibers are properly set and tenderized before the deboning process begins, resolving the contradiction between early processing efficiency and meat quality.
Solution Approach 2:
The patent applies electrical parameters (voltage, current, pulse duration) to the carcass to induce physiological changes that accelerate rigor mortis. By changing the electrical state of the muscle tissue through controlled stimulation, the meat achieves optimal tenderness faster, enabling earlier deboning without quality loss.
2Loss of time
If electrical stimulation is applied to accelerate rigor mortis, then meat tenderness is improved and processing time is reduced, but additional equipment and process complexity are introduced
Solution Approach 1:
The electrical stimulation apparatus is integrated into the existing poultry processing line, serving multiple functions: accelerating rigor mortis, tenderizing meat, and potentially preparing the muscle for subsequent processing steps. This multi-functionality reduces the need for separate dedicated equipment, minimizing added complexity.
Solution Approach 2:
The natural, time-dependent biochemical process of rigor mortis development is replaced with an accelerated electro-physiological process. Instead of waiting passively for natural ATP depletion over hours, electrical stimulation actively triggers and accelerates the same biochemical cascade, dramatically reducing the required aging time.
3Speed
If high amperage electrical current (at least 350 milliamps) is applied across the poultry carcass, then ATP depletion is accelerated and rigor mortis onset is expedited, but energy consumption and potential tissue damage increase
Solution Approach 1:
The electrical stimulation is applied in pulsed cycles rather than continuously. The system delivers bursts of high-amperage current followed by rest periods, allowing tissue recovery between pulses. This periodic application achieves the desired ATP depletion and rigor acceleration while preventing cumulative thermal damage and excessive stress on the tissue.
Solution Approach 2:
The electrical stimulation process is designed to maintain continuous progress toward rigor mortis completion through sustained pulsed application. The timing and duration of pulses are optimized to ensure uninterrupted acceleration of the biochemical process, achieving rapid tenderization without requiring excessively high continuous current that would cause tissue damage.
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
This method effectively reduces the aging period and enhances meat tenderness by accelerating ATP depletion and muscle contraction, resulting in more tender and efficient processing.
Implementation Method 1
applying a pulsed electrical voltage across the poultry carcass, wherein the electrical voltage is sufficient to impart an electrical current across the poultry carcass that is at least about 350 milliamps
Data Source
AI summary
A method of tenderizing meat on a poultry carcass includes defeathering the poultry carcass, and subsequently applying a pulsed electrical voltage across the poultry carcass. The electrical voltage can be sufficient to impart an electrical current across the poultry carcass that is at least about 350 milliamps. An apparatus for tenderizing meat on a poultry carcass is also discussed.