Synthetic Pheromone Composition for Insect Attraction and Repulsion
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Solution Overview
Problem
Conventional approaches have failed to identify the full sex pheromone system of female navel orangeworm moths, limiting effective methods for attracting or repelling insect pests like the navel orangeworm and meal moth.
Innovation Solution
A synthetic pheromone composition comprising Z,Z-11,13-hexadecadienal, (Z,Z,Z,Z,Z)-3,6,9,12,15-tricosapentaene, (Z,Z,Z,Z,Z)-3,6,9,12,15-pentacosapentaene, Z,Z-11,13-hexadecadien-1-ol, and other related compounds is developed, which mimics the natural pheromones to attract or repel target insects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional approaches are used to identify pheromone components, then the identification process is simple, but the full pheromone system cannot be identified
Solution Approach 1:
The pheromone identification process is segmented into multiple analytical stages using different techniques (GC-MS, GC-EAD, NMR, synthesis). Each technique addresses specific aspects of pheromone component identification, allowing comprehensive identification without requiring a single complex method
Solution Approach 2:
Multiple analytical techniques are employed that serve different functions: GC-MS for separation and identification, GC-EAD for electroantennographic detection, NMR for structural characterization, and synthesis for confirmation. This multi-functional approach enables complete pheromone system identification
2Productivity
If a single pheromone component (Z,Z-11,13-hexadecadienal) is used, then the composition is simple, but the attraction effectiveness is insufficient
Solution Approach 1:
The pheromone composition is formulated as a composite mixture containing Z,Z-11,13-hexadecadienal as the major component (75-95% w/w) combined with minor components including (Z,Z,Z,Z,Z)-3,6,9,12,15-tricosapentaene, (Z,Z,Z,Z,Z)-3,6,9,12,15-pentacosapentaene, and other compounds. This composite structure enhances attraction effectiveness by mimicking the natural pheromone blend
Solution Approach 2:
The pheromone composition parameters are optimized by adjusting the ratios of different components. The major component Z,Z-11,13-hexadecadienal is present at 75-95% w/w, while minor components are present at 5-25% w/w, creating an optimal concentration profile that maximizes insect attraction
Data Source
AI summary
The present invention provides compounds useful for preparing synthetic pheromone compositions that can be used as attractants or inhibitors of insect species. The compositions are useful in the control of navel orangeworm or meal moth insect pests.