Canola Tofu Processing for Protein Coagulation and Texture
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Solution Overview
Problem
The preparation of tofu-like products from canola meal has been hindered by its lower protein content, higher fiber content, solubility issues, and undesirable taste and texture, which have prevented its widespread use as a viable plant-based protein alternative.
Innovation Solution
A method involving grinding canola meal, separating insoluble materials, heating canola milk to induce protein unfolding, cooling for coagulation, adding a coagulant, and removing liquid to produce a soft solid product, using coagulants like calcium sulfate and glucono delta-lactone to achieve a tofu-like consistency and texture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If canola meal is used as a protein source for tofu production, then cost is reduced and plant-based protein demand is met, but solubility and functionality are reduced
Solution Approach 1:
The patent applies parameter changes by modifying the coagulation conditions specifically for canola meal. The process uses heating to 90-100°C to induce protein unfolding, followed by cooling to allow coagulation, and then adds a coagulant to induce coagulation. These parameter modifications (temperature sequence and coagulant addition) resolve the solubility and functionality issues of canola meal while maintaining its protein content advantage.
2Quantity of substance
If canola meal is used for tofu production, then lower cost is achieved, but strong flavors and undesirable taste are introduced
Solution Approach 1:
The patent applies extraction by separating insoluble materials from the aqueous ground canola meal to isolate canola milk. This extraction process removes undesirable components (fiber, strong flavors) while retaining the protein, thereby resolving the taste and flavor issues while maintaining the protein content advantage.
3Quantity of substance
If canola meal is used for tofu production, then plant-based protein alternative is provided, but higher fiber content creates texture issues
Solution Approach 1:
The patent applies extraction by separating insoluble materials (primarily fiber) from the aqueous ground canola meal. This removal of fiber prevents texture and appearance issues while retaining the protein, thereby resolving the texture contradiction.
Solution Approach 2:
The patent modifies the coagulation parameters (heating to 90-100°C, cooling, coagulant addition) to ensure proper curd formation and texture development in the absence of fiber, thereby achieving desirable texture and appearance comparable to commercial soy tofu.
4Device complexity
If traditional tofu production method is used with canola meal, then process simplicity is maintained, but coagulation and curd formation are insufficient
Solution Approach 1:
The patent modifies the coagulation parameters by adding a specific heating step (90-100°C) to induce protein unfolding, followed by cooling, and then adding a coagulant. These parameter changes ensure reliable coagulation and curd formation while maintaining relative process simplicity.
Solution Approach 2:
The patent applies preliminary action by heating the canola milk before adding the coagulant. This preliminary heating unfolds the proteins, preparing them for effective coagulation, thereby ensuring reliable curd formation while keeping the process straightforward.
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 method successfully produces a tofu-like product from canola meal with a texture and appearance comparable to commercial soy tofu, overcoming the challenges of protein content and flavor issues, and providing a palatable and visually appealing alternative.
Implementation Method 1
heating the canola milk at 90-100° C. to induce protein unfolding
Implementation Method 2
cooling the canola milk to allow coagulation
Implementation Method 3
adding a coagulant to the canola milk to induce coagulation
Data Source
AI summary
The preparation of a tofu-like product from canola meal is taught, comprising placing ground canola meal in an aqueous solution to form an aqueous ground canola meal, separating insoluble materials from liquids of the aqueous ground canola meal to isolate a canola milk, heating the canola milk to induce protein unfolding, cooling the canola milk to allow coagulation, adding a coagulant to the canola milk to induce coagulation and removing liquid from the curd to produce a soft solid product.