Wine Grape Dehydration Using Low Heat and High Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional dehydration methods for fruits, including wine grapes, result in the loss of bioavailable nutrients due to disruption of the natural food matrix, enzymatic degradation, and oxidative processes, leading to decreased health benefits and rapid spoilage.
Innovation Solution
A method of dehydrating fruits, particularly wine grapes, that maintains the integrity of the fruit and stem connection, utilizing low heat and high airflow to mimic natural transpiration, allowing water loss through pore evaporation and concentrating bioactive compounds within the intact food matrix.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional dehydration methods are used, then water content is reduced, but bioavailable nutrients are lost due to disruption of the natural food matrix
Solution Approach 1:
The patent applies this principle by maintaining the intact fruit skin as a protective barrier during dehydration. The skin acts as a flexible shell that prevents disruption of the internal food matrix, thereby retaining bioavailable nutrients while allowing controlled water removal through the skin's natural pores and stomata.
Solution Approach 2:
The patent creates a protective environment by dehydrating fruit in controlled atmospheric conditions that prevent oxidative degradation. The process maintains an environment that protects sensitive nutrients from oxidation while facilitating water removal, thus preserving both quantity and quality of nutritional compounds.
2Productivity
If high heat is applied to accelerate dehydration, then processing time is reduced, but integrity and bioavailability of nutritional compounds are severely affected
Solution Approach 1:
The patent applies this principle by optimizing dehydration parameters including using lower temperatures (95-115°F) combined with extended processing time, increased airflow velocity, and reduced relative humidity. This parameter optimization allows adequate dehydration speed while preserving the integrity and bioavailability of nutritional compounds that would be degraded by high heat.
Solution Approach 2:
The patent implements periodic action through intermittent heating cycles and continuous airflow adjustments during the dehydration process. This periodic approach allows the fruit to gradually adapt to thermal stress while maintaining nutrient integrity, preventing the severe effects of continuous high-heat exposure.
3Ease of operation
If the fruit is processed without maintaining stem connection, then handling is easier, but transpiration-based dehydration and nutrient retention are compromised
Solution Approach 1:
The patent applies segmentation by processing entire fruit clusters on the stem rather than individual fruits. This segmentation approach maintains the natural transpiration pathway from roots through stem to fruit, enabling efficient water removal while preserving nutrient compounds. The clustered structure on stems facilitates easier handling and processing compared to individual fruits.
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 enhances the retention and concentration of bioactive nutrients, extends the shelf life of dehydrated fruits, and produces a product with improved bioavailability and nutritional content while maintaining the natural biochemical integrity of the fruit.
Implementation Method 1
utilizing low heat and high airflow to mimic natural transpiration, allowing water loss through pore evaporation
Implementation Method 2
a first curing step comprising allowing the at least one cluster of fruit to cool to room temperature over a period of time
Data Source
AI summary
A method of dehydrating seeded wine grapes that are intact, attached to a steam, and that have a fruit matrix containing seeds is described that includes providing air movement using a dehydration device over the seeded wine grapes at a temperature between 135 and 200 degrees F. to extract water through pores of the seeded wine grape, and cooling the seeded wine grapes to room temperature, thereby concentrating nutrients within the fruit matrix and rendering the seeds of the seeded wine grapes edible.