Interactive responses of gala apple fruit volatile production to controlled atmosphere storage and chemical inhibition of ethylene action.
Gala apples exposed to the ethylene action inhibitor 1-methylcyclopropene (1-MCP) for 12 h at 20 degrees C were stored at 1 degrees C in air or a controlled atmosphere (CA) maintained at 1 kPa O2 and 2 kPa CO2. Volatile compounds were measured after 4, 12, 20, and 28 weeks plus 1 or 7 days at 20 degrees C. Treatment with 1-MCP and then storage in air or CA or storage in CA without 1-MCP treatment reduced volatile production as compared to apples not treated with 1-MCP stored in air. The reduced production of esters, alcohols, aldehydes, acetic acid, and 1-methoxy-4-(2-propenyl)benzene was observed. Ester production by fruit stored in CA decreased throughout the storage period regardless of previous 1-MCP treatment. The production of esters, alcohols, aldehydes, acetic acid, and 1-methoxy-4-(2-propenyl)benzene by 1-MCP-treated fruit stored in air plus 7 days at 20 degrees C increased after 20 or 28 weeks of storage. Continuous exposure to 417 micromol m(-3) ethylene for 7 days at 20 degrees C after 12 or 28 weeks of storage stimulated production of many volatile compounds, primarily esters and alcohols, by fruit stored in CA or 1-MCP-treated apples stored in air. However, exposure to ethylene had no effect on the production of aldehydes or acetic acid.
Mattheis
James P
JP
Agricultural Research Service Tree Fruit Research Laboratory, U.S. Department of Agriculture, 1104 North Western Avenue, Wenatchee, Washington 98801, USA. mattheis@tfrl.ars.usda.gov
Fan
Xuetong
X
Argenta
Luiz C
LC
D019342:Acetic Acid / Q000378:metabolism; D000438:Alcohols / Q000378:metabolism; D000447:Aldehydes / Q000378:metabolism; D002245:Carbon Dioxide / Q000032:analysis; D003521:Cyclopropanes / Q000008:administration & dosage; D004952:Esters / Q000378:metabolism; D005030:Ethylenes / Q000037:antagonists & inhibitors*; D005519:Food Preservation / Q000379:methods*; D005638:Fruit / Q000378:metabolism; D027845:Malus / Q000378:metabolism*; D010100:Oxygen / Q000032:analysis; D013997:Time Factors; D014835:Volatilization
D000438:Alcohols; D000447:Aldehydes; D003521:Cyclopropanes; D004952:Esters; D005030:Ethylenes; D002245:Carbon Dioxide; C036216:ethylene; C412563:1-methylcyclopropene; D019342:Acetic Acid; D010100:Oxygen