1. Introduction
1-Methylcyclopropene (1-MCP) is a synthetic cyclic olefin
that inhibits ethylene by blocking access to the ethylenebinding
receptor (Sisler and Serek, 1997). 1-MCP has been
used extensively in the apple industry since 2002 to retain fruit
firmness in cold storage and extend shelf life. It is marketed as
SmartFreshSM by AgroFresh, Inc. (Springhouse, PA).