Extrusion Process for Meat-Analogue Texture and Fat Content
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Solution Overview
Problem
Existing processes for producing meat-analogue food products fail to replicate the appearance, texture, and taste of real meat, and struggle to incorporate desired amounts of oil and fat without compromising texture or requiring additional processing steps, leading to unappealing products with high carbohydrate content.
Innovation Solution
A process involving an extruder barrel fed with 40-70 wt % water and 15-35 wt % plant protein, with liquid oil or fat injected downstream, followed by extrusion through a cooling die, which enhances texturization and reduces the need for starch and flour, allowing for a meat-analogue product with 2-15 wt % oil or fat content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If oil and fat are added to the extruder to achieve desired fat content, then the nutritional profile is improved, but the mechanical shear forces are reduced and fiber structure formation is compromised
Solution Approach 1:
The extrusion process is designed to establish the fiber structure first through mechanical shear forces, then oil and fat are incorporated in downstream processing or during controlled mixing stages. This preliminary action ensures the structural framework is formed before adding lubricating components that would reduce shear forces.
Solution Approach 2:
The extrusion process is divided into distinct stages: first forming the protein matrix and fiber structure, then separately incorporating oil and fat. This segmentation allows each component to be optimized independently - the fiber structure is built when shear forces are maximum, and fat is added when the structure is already established.
2Manufacturing precision
If starch and flour are used to compensate for reduced shear forces, then the texture is maintained, but the carbohydrate content increases and nutritional value decreases
Solution Approach 1:
The process optimizes extrusion parameters such as temperature, pressure, and screw speed to maximize shear forces during the critical fiber formation stage. By adjusting these parameters, adequate shear forces are generated without requiring additional starch or flour, thus maintaining texture while minimizing carbohydrate content.
Solution Approach 2:
The invention uses composite protein formulations that inherently provide better textural properties and structural integrity. These composite materials maintain texture and mouthfeel without requiring high carbohydrate content, allowing the product to achieve desired texture through protein matrix structure rather than starch filler.
3Ease of operation
If high amounts of carbohydrates are used to achieve desired texture, then the mouth feeling is improved, but the product is perceived as having cereal taste and aroma which is not pleasant
Solution Approach 1:
The extrusion process uses optimized temperature and pressure parameters to develop desirable textural properties and mouth feeling directly from the protein matrix. This eliminates the need for high carbohydrate content, thereby avoiding the unpleasant cereal taste and aroma that would result from using starch and flour fillers.
Solution Approach 2:
The process replicates the textural characteristics of meat products through controlled protein extrusion and fiber structure formation. By copying the structural properties of meat fibers rather than using carbohydrate fillers, the product achieves authentic mouth feeling without cereal-like taste or aroma.
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 process results in a meat-analogue food product that mimics the appearance, texture, and taste of meat, with improved textural attributes and nutritional profiles, increasing consumer appeal while avoiding pasty, mushy, or brittle textures and reducing the negative mouthfeel associated with high starch content.
Implementation Method 1
The mechanical shear forces normally obtained with an extruder to build up the needed fiber structure of a meat-analogue
Implementation Method 2
extruding the mixture through a cooling die
Data Source
AI summary
The invention relates to a process for preparing a meat-analogue food product. More specifically, the present invention relates to a process for preparing a meat-analogue food product having the appearance and the texture of meat and also relates to a meat-analogue food product obtained by the process.