Soybean Leaf Isoflavone Concentration via Ethylene Treatment
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Solution Overview
Problem
Soybean leaves and stems have low concentrations of isoflavone derivatives, limiting their potential as a source for bioactive compounds with estrogenic and antioxidative properties.
Innovation Solution
Treating soybean plants with ethylene or its donor, ethephon, during cultivation increases the concentration of isoflavone derivatives in soybean leaves and stems, which can then be extracted and used in pharmaceutical, health food, and cosmetic applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If soybean leaves or stems are used as a source of isoflavone derivatives, then the production cost is reduced and alternative raw material is provided, but the isoflavone derivative content is extremely low
Solution Approach 1:
The patent applies parameter changes by treating soybean plants with ethylene gas or ethephon (an ethylene-releasing compound) at specific concentrations (5-1000 ppm) during the growth period. This chemical treatment fundamentally changes the physiological state of the plant, triggering accumulation of isoflavone derivatives in leaves and stems. The treatment concentration and timing are optimized parameters that resolve the contradiction between using low-isoflavone raw materials and achieving high isoflavone content.
2Quantity of substance
If conventional breeding methods are used to develop high isoflavone content soybeans, then genetic improvement is achieved, but the isoflavone content reaches only 4000 μg/g which is still insufficient
Solution Approach 1:
The patent uses ethylene or ethephon as an intermediary substance to bridge the gap between conventional soybean varieties and high isoflavone content requirements. Instead of directly breeding for high isoflavone content over multiple generations, the ethylene treatment acts as a mediator that rapidly induces isoflavone accumulation in standard soybean varieties, achieving much higher concentrations without complex breeding programs.
3Quantity of substance
If germinating soybeans are used to increase isoflavone content by 40-70%, then some improvement is achieved, but the isoflavone content remains low compared to the needed levels
Solution Approach 1:
The patent employs periodic action by applying ethylene treatment at specific growth stages (10-90 days after seeding) rather than relying on prolonged germination. The ethylene treatment is applied in controlled periods, triggering rapid isoflavone accumulation that surpasses what extended germination could achieve, thus reducing time loss while increasing isoflavone content.
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 significantly enhances the accumulation of isoflavone derivatives in soybean leaves and stems, making them valuable for addressing estrogen deficiency, antioxidation, and skin care, while also enabling their use in food and medicinal products.
Implementation Method 1
treating ethylene or 2-chloroethylphosphonic acid (ethephon), i.e. an ethylene donor, during cultivation of soybeans, high concentrations of isoflavone derivatives are accumulated in soybean leaves or soybean stems
Data Source
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AI summary
The present invention relates to soybean leaves or soybean stems having high isoflavone derivative content, and a method for preparing the same. Specifically, by finding that soybean leaves or soybean stems treated with ethylene and ethephon, i.e. a ethylene donor, show significantly increased isoflavone derivative content, the method for preparing the soybean leaves or soybean stems having high isoflavone derivative content and the soybean leaves or soybean stems having high isoflavone derivative content prepared by using the method can be useful as functional foods and medicinal materials for diseases due to estrogen imbalance and lack of the antioxidative activity.