Seed Sanitizing and Drying to Control Pathogens Without Viability Loss
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Solution Overview
Problem
Existing methods for controlling pathogens and preventing diseases on seeds are inefficient and can alter seed properties or viability when exposed to high temperatures, leading to reduced germination rates and nutritional changes.
Innovation Solution
A two-step method involving contacting seeds with a sanitizing composition containing an agriculturally acceptable sanitizing agent, water, and optionally alcohol, followed by heating/drying at high temperatures to reduce moisture content while maintaining seed viability and preventing core temperature from exceeding 158°F (70°C).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If seeds are exposed to high temperatures to dry them, then moisture content is reduced, but seed viability and germination rate deteriorate
Solution Approach 1:
The drying process is divided into two distinct stages: a first drying stage at moderate temperature (32-40°C) to remove surface moisture without damaging seeds, followed by a second drying stage at higher temperature (40-60°C) to remove internal moisture. This segmentation allows progressive moisture removal while protecting seed viability through controlled temperature exposure.
Solution Approach 2:
The first drying stage serves as a preliminary action that prepares the seeds for the second drying stage by removing surface moisture and acclimating the seeds to gradual temperature changes. This preliminary treatment prevents thermal shock and prepares the seed structure to better withstand the higher temperatures of the second stage without compromising viability.
2Reliability
If seeds are exposed to high temperatures to control pathogens, then pathogen elimination is improved, but seed properties and nutritional values deteriorate
Solution Approach 1:
The thermal treatment is segmented into two stages with different temperature profiles: the first stage uses moderate temperature to begin pathogen control while preserving seed properties, and the second stage uses higher temperature to complete pathogen elimination. This segmentation enables progressive pathogen control while minimizing thermal damage to seed composition and nutritional values.
Solution Approach 2:
The first drying stage acts as a preliminary thermal treatment that begins pathogen control while keeping temperatures below the threshold for nutritional degradation. This preliminary action prepares the seed structure and moisture content for the second stage, enabling more effective pathogen elimination without causing excessive thermal damage to seed properties.
3Reliability
If a single high-temperature drying process is used, then pathogen control is improved, but seed germination rate deteriorates
Solution Approach 1:
The drying process is segmented into two stages with progressively increasing temperatures. The first stage at lower temperature (32-40°C) begins pathogen control while preserving germination potential, and the second stage at higher temperature (40-60°C) completes pathogen elimination. This segmentation enables effective pathogen control while maintaining high germination rates by avoiding sudden high-temperature exposure.
Solution Approach 2:
The first drying stage serves as a preliminary treatment that establishes pathogen control foundation while keeping temperatures moderate enough to preserve seed germination characteristics. This preliminary action prepares the seed moisture content and structure for the second stage, enabling complete pathogen control without compromising the germination rate through excessive thermal exposure.
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 effectively controls pathogens and prevents diseases without significantly altering seed properties or viability, achieving greater efficacy than individual interventions and maintaining seed germination rates.
Implementation Method 1
contacting seeds with a sanitizing composition comprising an agriculturally acceptable sanitizing agent, water and optionally alcohol
Implementation Method 2
heating/drying the seeds at a temperature of 160° F. to further control the pathogens while reducing, preferably by evaporation, the moisture content of the seeds
Data Source
AI summary
A method for the control of pathogens and/or the prevention of diseases associated with the presence of said pathogens in and/or on seeds, said method comprising the steps of contacting the seeds with a sanitizing composition comprising at least one agriculturally acceptable sanitizing agent, water; and optionally at least one agriculturally acceptable alcohol; heating/drying the seeds at a temperature ≥160° F. for a period of time that prevents the core of the seeds heated to reach 158° F.; and optionally a complementary drying of the seeds at a temperature <158° F.