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1-Methylcyclopropylene, Physicochemical Properties
- Mar 11, 2019 -

1-methylcyclopropene (1-MCP) is a cyclic hydrocarbon with double bonds. It exists in a gas state at room temperature. It is colorless and odorless. Its boiling point is 10 C. It is not stable in a liquid state. Both 1-MCP and ethylene can attract and pair with the electrons of metal ions in ethylene receptors, but their binding is competitive. Normally, ethylene binds to metal atoms in receptors in vivo, causing structural changes of receptors, and then falls off from receptors, which activate ethylene receptors. However, 1-MCP is a highly strained molecule. When it binds to receptor metal by its own double bond, its high strain force and strong receptor inhibition effect can make 1-MCP firmly bind to receptor sites and block the receptor for a long time without dissociation, thus preventing the binding of ethylene to its receptor. This binding state of 1-MCP and receptor can also hinder the formation of physiological active substances in plants, thus destroying B. The signal transduction of ethylene inhibits the physiological effects of ethylene. [1]


It can irreversibly act on ethylene receptors, thus blocking the normal binding of ethylene and inhibiting a series of physiological and biochemical reactions related to fruit ripening induced by ethylene. The shelf life of fruits and vegetables should be extended by more than 50-200%. Compared with traditional ethylene inhibitors such as (STS), 2,5-norbornadiene (2,5-norbornadiene) and (AVG), 1-MCP has the advantages of non-toxicity, low yield and high efficiency.