Cooking appliance and method for starch-based foodstuffs
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Solution Overview
Problem
Conventional cooking methods for starch-based foods, such as potatoes, result in high glycemic index due to rapid digestibility, contributing to metabolic diseases like obesity and diabetes, and existing methods to increase resistant starch are complex, time-consuming, or require harmful chemicals, making them unsuitable for domestic use.
Innovation Solution
A device and method that control cooking cycles using a weighing scale and controller to implement a two-stage process: drying at a temperature below 58°C to reduce water content, followed by cooking at a temperature above 60°C, allowing for automated control of starch digestibility and water content, suitable for home kitchen appliances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional cooking methods are used to cook starch-based foods, then the food is fully gelatinized and easily digestible, but the glycemic index becomes high and rapidly digestible starch increases
Solution Approach 1:
The cooking process is divided into two distinct stages: a first cooking stage at a lower temperature to partially gelatinize starch while preserving some resistant starch, and a second cooking stage to complete gelatinization. This segmentation allows the food to be digestible while maintaining lower glycemic index by preserving some resistant starch through the controlled two-stage process
Solution Approach 2:
The invention changes the temperature parameter during the cooking process by implementing a two-stage approach with different temperature levels. The first stage uses a lower temperature to control the degree of gelatinization, while the second stage completes the cooking process, thereby modifying the starch structure to reduce rapidly digestible starch content while maintaining digestibility
2Quantity of substance
If complex physical and chemical procedures are used to generate resistant starch, then resistant starch content increases, but the processing complexity and time increase significantly
Solution Approach 1:
The cooking appliance itself performs the resistant starch generation function through its controlled two-stage cooking process. The appliance uses its existing heating and control capabilities to create the specific temperature profile needed to increase resistant starch content, eliminating the need for separate professional processing equipment or complex external treatments
Solution Approach 2:
The invention uses parameter changes in the cooking process (temperature and time control in two stages) to generate resistant starch in situ. By controlling the gelatinization degree during the first stage and completing it in the second stage, the system increases resistant starch content using only the cooking appliance's inherent capabilities, avoiding complex external processing
3Quantity of substance
If low temperature treatment is used to reduce water content below 35%, then resistant starch increases, but the processing time becomes substantial
Solution Approach 1:
The cooking process is segmented into two stages where the first stage performs partial water removal and initial gelatinization at lower temperature, and the second stage completes the process more quickly at higher temperature. This segmentation allows achieving the desired water content and resistant starch increase without requiring prolonged single-stage low temperature treatment
Solution Approach 2:
The invention uses periodic action by alternating between two cooking stages with different temperature profiles. The first stage operates at lower temperature for partial processing, then the second stage operates at higher temperature to complete the process. This periodic alternation achieves the same result as continuous low temperature treatment but in less total time
4Quantity of substance
If modern diets provide insufficient dietary fiber, then gastrointestinal health is compromised, but increasing resistant starch requires complex industrial processing
Solution Approach 1:
The cooking appliance performs the dietary fiber enhancement function through its two-stage cooking process. By controlling the gelatinization degree in the first stage and completing it in the second stage, the appliance increases resistant starch content (a form of dietary fiber) using only its standard cooking capabilities, making fiber enhancement accessible to normal consumers without requiring industrial processing
Solution Approach 2:
The invention uses parameter changes in the cooking process to increase dietary fiber content in situ. The controlled temperature and time parameters in the two-stage process modify the starch structure to increase resistant starch, providing a simple way to enhance dietary fiber content using only the cooking appliance's inherent heating and control functions
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 rapidly digestible starch and increases resistant starch content, lowering the glycemic index and promoting healthier cooking outcomes, particularly for diabetes and obesity management, while being accessible and safe for domestic use.
Implementation Method 1
a weighing scale for weighting the food item during cooking
Implementation Method 2
a heater for heating the vessel contents
Implementation Method 3
performing drying using the heater at a temperature below 58 degrees Celsius for a time duration sufficient for the food item weight to drop
Implementation Method 4
Cooking starch-based food normally makes the starch fully gelatinized which can be quickly digested and absorbed
Data Source
AI summary
A device for cooking a starch-based food item is provided in which there is a drying cycle at a temperature below the gelatinization temperature and a cooking cycle at a temperature above the gelatinization temperature. The drying provides a relative weight drop by a first amount and the cooking provides a further relative weight drop. The weight is monitored during drying and cooking to provide feedback control of the duration of the drying and cooking times. The device and method make healthy food with reduced rapid digestible starch (RDS) and increased resistant starch (RS) content. In this way the glycemic index (GI) of a food item is reduced and the resistant starch is increased, which is beneficial to health especially for diabetes and obese groups.