In the field of agriculture and post-harvest treatment, 1-MCP (1-Methylcyclopropene) is known as the “youth preservative” for fruits and vegetables. As a synthetic ethylene receptor blocker, its primary functions are as follows:
1. Potent Inhibition of Ripening and Senescence
- Principle: The molecular structure of 1-MCP is highly similar to ethylene. It irreversibly binds to the ethylene receptors on the surface of plant cells before ethylene can.
- Effect: It blocks the transmission of ethylene (the ripening hormone) signals. Even in the presence of ambient ethylene, the fruit cannot “sense” it, which significantly delays softening, color change, and the respiration peak.
2. Extension of Shelf Life
- Firmness Maintenance: It effectively inhibits the activity of pectinase, maintaining the crispness of fruits like apples, pears, and kiwis.
- Quality Preservation: It delays the degradation of chlorophyll, keeping vegetables (such as broccoli) vibrant green and reducing the consumption of nutrients like sugars and vitamins.
3. Prevention of Post-harvest Physiological Disorders
- It significantly reduces disorders caused by ethylene sensitivity, such as superficial scald in apples and the premature dropping of buds or petals in floral crops.
lin-chemical.com 