Response of Pink Lady® apples to postharvest application of 1-methylcyclopropene as a function of applied dose, maturity at harvest, storage time and controlled atmosphere storage.

Journal of the science of food and agriculture

PubMedID: 24515399

Cocci E, Sacchetti G, Rocculi P, Dalla Rosa M. Response of Pink Lady® apples to postharvest application of 1-methylcyclopropene as a function of applied dose, maturity at harvest, storage time and controlled atmosphere storage. J Sci Food Agric. 2014;.
BACKGROUND
1-Methylcyclopropene (1-MCP) is an inhibitor of ethylene reception used in postharvest treatments to delay fruit ripening. Several factors affect the efficacy of 1-MCP treatments. The effect of a postharvest treatment with 1-MCP on the quality of Pink Lady® apples as a function of 1-MCP dose, storage time and maturity at harvest was investigated. 1-MCP treatment was further tested in combination with controlled atmosphere (CA) storage.

RESULTS
1-MCP limited fruit respiration and softening during storage and was more effective on partially matured fruits and at prolonged storage times. The delaying of 1-MCP on the increase of ripening index was greater on matured fruits at prolonged storage times. The combination of 1-MCP and CA treatments positively affected quality indices of mature apples during 6 months of storage and 7 days of commercial life, with 1-MCP being more effective than CA. 1-MCP and CA showed positive combined effects on firmness and ripening index after 6 month of storage, and on firmness and CO2 production after further 7 days of commercial life.

CONCLUSION
By knowing fruit maturity at harvest and expected storage time it is possible to choose, applying a simple polynomial model, the most Suitable 1-MCP dose to meet the market requirements.