Turmeric Rhizome Extract Emulsifiable Concentrate for Powdery Mildew
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Solution Overview
Problem
Conventional chemical pesticides for controlling plant powdery mildew lead to pathogen resistance, environmental pollution, and health risks, necessitating the development of eco-friendly and effective plant-derived alternatives.
Innovation Solution
A method involving the preparation of Curcuma longa rhizome extract through drying, ethanol extraction, further solvent extraction, and molecular distillation, followed by formulation into an emulsifiable concentrate with specific solvent and emulsifier ratios, to create a natural, low-toxicity pesticide effective against powdery mildew.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional chemical pesticides are used for controlling powdery mildew, then disease control efficacy is improved, but pathogen resistance develops and environmental pollution increases
Solution Approach 1:
The patent extracts active components from Curcuma longa rhizome through a multi-step process involving ethanol extraction, solvent extraction, and molecular distillation. This natural extract replaces synthetic chemical pesticides, providing disease control while avoiding the harmful effects of chemical residues and pathogen resistance development.
Solution Approach 2:
The patent optimizes extraction parameters including ethanol concentration (60-80%), extraction temperature (40-60°C), and extraction time (2-4 hours) to maximize the efficacy of natural active components while maintaining environmental safety. The molecular distillation process further refines the extract to concentrate active ingredients.
2Reliability
If synthetic chemical fungicides are applied repeatedly, then powdery mildew control is maintained, but pathogen resistance increases and efficacy decreases
Solution Approach 1:
The patent employs a biodegradable natural extract from Curcuma longa that decomposes rapidly in the environment, preventing accumulation and resistance development. The extract provides sufficient protection during the critical growth period without leaving persistent residues that would select for resistant pathogen strains.
3Object-affected harmful factors
If plant-derived pesticides are used instead of chemical pesticides, then environmental friendliness is improved, but formulation stability and efficacy may be reduced
Solution Approach 1:
The patent formulates the Curcuma longa extract with emulsifiers and adjuvants to create a stable emulsifiable concentrate. This composite formulation ensures uniform distribution of active components, enhances adhesion to plant surfaces, and maintains efficacy comparable to synthetic pesticides while preserving environmental safety.
Solution Approach 2:
The patent uses emulsification to transform the hydrophobic natural extract into a water-dispersible formulation. The emulsifier molecules create stable oil-in-water emulsions that remain homogeneous during storage and application, ensuring consistent efficacy while maintaining the natural, environmentally friendly properties of the active ingredients.
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 Curcuma longa rhizome extract demonstrates exceptional efficacy in preventing and treating powdery mildew, degrades rapidly, avoids resistance, and is environmentally friendly, with low toxicity to wildlife, ensuring sustainable use and prolonged efficacy.
Implementation Method 1
extraction with an aqueous ethanol solution to obtain an extract solution
Implementation Method 2
extraction with an organic solvent to obtain an aqueous-phase product and an oil-phase product
Implementation Method 3
subjecting the oil-phase product to molecular distillation to remove turmeric oleoresin
Implementation Method 4
formulation into an emulsifiable concentrate with specific solvent and emulsifier ratios
Data Source
AI summary
Provided method for preparing a Curcuma longae rhizome extract, the method comprises: drying and pulverizing the plant raw materials, then extracting with an aqueous ethanol solution to obtain an extract liquid; concentrating the extract liquid, and extracting same with an organic solvent to obtain an aqueous-phase product and an oil-phase product; and performing molecular distillation on the oil-phase product to remove turmeric oleoresin and obtain the product. This extract is safe with low toxicity, rapidly biodegradable, and less likely to induce drug resistance. This extract is combined with both an emulsifier and a solvent to prepare an emulsifiable concentrate which to control the plant powdery mildew. This emulsifiable concentrate exhibits stable physicochemical properties, a long storage period, and low toxicity to organisms in terrestrial environments.