title: 1-methylcyclopropene effects on temporal changes of aroma volatiles and phytochemicals of fresh-cut cantaloupe.
abstract: BACKGROUND
  Orange-fleshed cantaloupe melons have intense aroma and flavor but are very perishable during storage life. Fresh-cut processing enhances ethylene-mediated quality losses. Post-cutting 1-methylcyclopene (1-MCP) application to fresh-cut cantaloupe was evaluated for its effects on quality attributes, phytochemical content and aroma volatiles.
  
  
  RESULTS
  Fresh-cut cantaloupe (Cucumis melo var. cantalupensis 'Fiesta') cubes treated with 1.0 µL L(-1) of 1-MCP for 24 h at 5 °C, packaged in vented plastic clamshells and stored under normal atmosphere at 5 °C for 9 days, preserved their soluble solids, total phenolics, total carotenoids and β-carotene contents, but significant softening occurred. A significant increase of non-acetate esters and a decrease of aldehydes occurred during storage. Most quality attributes of fresh-cut cantaloupe were unaffected by the treatment with 1-MCP. 1-MCP-treated fresh-cut cantaloupe accumulated higher levels of propyl acetate, 2-methylbutyl acetate, methyl butanoate, methyl 2-methyl butanoate, methyl hexanoate, 2-methylbutyl alcohol and phenethyl alcohol, and lower levels of benzyl alcohol and heptanal than untreated controls.
  
  
  CONCLUSIONS
  Post-cutting treatment with 1-MCP affected nine of the flavor-important volatiles, particularly those derived from the amino acids isoleucine and phenylalanine, but had no practical effect on phytochemicals or other quality attributes.
authors: CBQF/Escola Superior de Biotecnologia, Universidade Católica Portuguesa, 4200-072 Porto, Portugal.
authors: Ana L
authors: AL
authors: Amaro
authors: Joana F
authors: JF
authors: Fundo
authors: Ana
authors: A
authors: Oliveira
authors: John C
authors: JC
authors: Beaulieu
authors: Juan Pablo
authors: JP
authors: Fernández-Trujillo
authors: Domingos P F
authors: DP
authors: Almeida
mesh_terms: D000447:Aldehydes / Q000378:metabolism; D002338:Carotenoids / Q000378:metabolism; D028463:Cucumis melo / Q000378:metabolism*; D003521:Cyclopropanes; D004032:Diet; D004952:Esters / Q000378:metabolism; D005519:Food Preservation / Q000379:methods*; D005520:Food Preservatives; D061353:Food Storage / Q000379:methods; D005638:Fruit / Q000378:metabolism*; D006801:Humans; D009812:Odorants; D010636:Phenols / Q000378:metabolism; D013649:Taste; D055549:Volatile Organic Compounds / Q000378:metabolism*
chemical_list: D000447:Aldehydes; D003521:Cyclopropanes; D004952:Esters; D005520:Food Preservatives; D010636:Phenols; D055549:Volatile Organic Compounds; D002338:Carotenoids; C412563:1-methylcyclopropene