Beef Fat Separation via Brittle Crushing and Sieving
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Solution Overview
Problem
Current methods for processing beef trim result in significant loss of lean beef due to its removal with tallow and fat, and fail to effectively eliminate microbial pathogens and cross-contamination, limiting the production of high-quality ground beef with specific fat content.
Innovation Solution
A method involving chilling beef to render fat brittle, followed by crushing to separate fat from lean beef without damaging the lean tissue, and subsequent processing using vibrating sieves, emulsification, pasteurization, and centrifugation to achieve the desired fat content and decontamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If trim is removed during boning and slicing processes, then tallow and fat are separated from the carcass, but significant lean beef is lost along with the fat
Solution Approach 1:
The trim material is segmented into fat particles and lean particles through size reduction and separation processes, allowing selective recovery of lean beef from the previously mixed trim waste stream
Solution Approach 2:
The physical state of fat is changed by controlling temperature to exploit the difference in melting points between fat and lean tissue, enabling separation through screening while preserving lean beef
2Loss of substance
If trim is used for sausage production or rendering, then fat and tallow are utilized, but the higher value lean beef component is wasted
Solution Approach 1:
The lean beef component is extracted from the trim material through separation processes, isolating it from fat and tallow for use in ground beef production while the fat component is directed to rendering or other fat-specific applications
Solution Approach 2:
Different portions of the trim material are directed to different processing streams based on their composition - lean particles to ground beef production and fat particles to rendering, optimizing the value utilization of each component
3Object-affected harmful factors
If traditional fat separation methods are used, then fat is removed from beef, but microbial pathogens are not effectively eliminated and cross-contamination occurs
Solution Approach 1:
Decontamination treatment is applied to the separated lean particles before they are combined with fat to create ground beef, proactively eliminating pathogens rather than relying on post-processing controls
Solution Approach 2:
The separation process itself acts as an intermediary step that physically divides the trim stream into lean and fat components, creating distinct processing pathways that reduce cross-contamination risk while enabling targeted decontamination
4Loss of substance
If beef is chilled to render fat brittle for separation, then fat can be crushed and separated from lean beef, but energy is consumed for cooling
Solution Approach 1:
The fat component undergoes a phase transition from soft to brittle state through controlled chilling, enabling mechanical separation through crushing and screening while minimizing energy consumption through efficient heat exchange
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 efficiently separates lean beef from fat, reducing microbial populations and minimizing cross-contamination, thereby producing high-quality ground beef with controlled fat content and maintaining the integrity of lean beef.
Implementation Method 1
reducing the temperature of at least the fat component of the beef to a temperature causing solidification of the fat and to a brittle condition
Implementation Method 2
the crushing force is sufficient to cause fracturing and the substantial disintegration or fragmentation or breaking up of the fat matter into small fat particles or fragments
Implementation Method 3
processing the mixture of particles in a vibrating sieve
Implementation Method 4
centrifuging the emulsification to separate the solids from the oily material
Data Source
AI summary
A method for separating fat from beef pieces containing fat. The method includes, with an apparatus, reducing the size of beef pieces containing fat when the fat is in a brittle condition into a mixture of particles that include predominantly fat and particles that include predominantly lean; and, with an apparatus, separating the fat particles from the lean particles based on color differences or size differences.