Protein Fortified Yogurt Casein Addition Permeate Reduction
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Solution Overview
Problem
The production of strained yogurt generates large amounts of diluted and acidic liquid permeate, which lacks economically viable uses, leading to disposal challenges and environmental concerns.
Innovation Solution
Incorporating a casein-containing ingredient, such as micellar casein, into the milk used for yogurt production, which increases the protein concentration and reduces or eliminates the need for straining, thereby minimizing the generation of liquid permeate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional straining process is used to make strained yogurt, then high protein concentration and thick creamy texture are achieved, but large amounts of liquid permeate are generated creating disposal problems
Solution Approach 1:
The patent applies preliminary action by adding casein-containing ingredients to the milk before fermentation begins. This pre-enrichment of protein material ensures that when straining occurs later, the permeate is already minimized because the casein has formed a network that traps proteins and prevents their dissolution in the liquid phase. The casein addition before fermentation is the key preliminary step that alters the subsequent separation characteristics.
Solution Approach 2:
The patent changes the protein composition parameters by introducing casein-containing ingredients with specific protein concentrations (25-92% protein on dry weight basis). This parameter change in the milk composition before fermentation fundamentally alters the separation behavior during straining, reducing the volume of permeate while maintaining the desired high protein concentration in the final yogurt product.
2Ease of manufacture
If liquid permeate is discharged into municipal waste streams, then disposal is simplified, but environmental harm occurs due to bacterial blooms and oxygen-deprived dead zones
Solution Approach 1:
The patent converts the previously harmful waste permeate into a valuable resource by incorporating casein-containing ingredients that transform the permeate composition. The casein addition changes the permeate from a harmful dilute acidic liquid to a more concentrated protein-rich stream that can be economically utilized, thereby converting the environmental hazard into a beneficial byproduct that reduces disposal needs.
Solution Approach 2:
Instead of discarding the permeate as waste, the patent enables recovery and reuse by modifying the permeate composition through casein addition. The altered permeate can be recovered and utilized in other food products or industrial applications, transforming it from a disposal problem into a valuable resource that eliminates the need for environmental discharge.
3Loss of substance
If casein-containing ingredient is added to increase protein concentration, then permeate generation is reduced, but additional ingredient processing is required
Solution Approach 1:
The patent uses casein-containing ingredients as an intermediary substance that mediates between the milk and the final yogurt product. The casein acts as a protein framework that organizes the milk components during fermentation and straining, enabling permeate reduction without requiring complex processing equipment. The casein serves as a biological mediator that simplifies the separation process.
Solution Approach 2:
The casein-containing ingredients perform multiple functions simultaneously: they provide structural framework during fermentation, enable protein concentration during straining, and reduce permeate volume. This self-service approach allows a single addition of casein to achieve multiple objectives without requiring multiple separate processing steps or complex equipment systems.
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 approach reduces disposal costs, increases product yield, and allows for the creation of a spreadable yogurt product with high protein content and reduced fat, calories, and carbohydrates.
Implementation Method 1
adding a casein-containing ingredient, such as micellar casein, to the milk used to make the yogurt. The casein-containing ingredient, which may be 25% to 92% protein on a dry weight basis, increases the protein concentration in the yogurt mixture
Implementation Method 2
adding yogurt cultures to milk and fermenting the milk into conventional yogurt
Implementation Method 3
strained yogurt processes further separate a liquid permeante and leave behind the strained yogurt product
Data Source
AI summary
Methods of making protein-fortified yogurt products are described. The methods may include mixing a casein-containing ingredient with starting milk to make a yogurt milk, where the casein-containing ingredient has a casein-to-whey protein ratio of 82:18 or greater. The yogurt milk may be fermented after adding yogurt culture to make a yogurt mixture. The yogurt mixture may then be formed into the protein-fortified yogurt product. The total protein concentration in the protein-fortified yogurt product may be 10 wt. % or more. One variety of the protein-fortified yogurt product is a spreadable yogurt product having the total protein concentration of 11 wt. % or more.