Effect of Preharvest and Postharvest 1-Methylcyclopropene (1-MCP) Treatments on Fruit Quality Attributes in Cold-stored ‘Fuji’ Apples

Abstract

Abstract: This work was carried out to evaluate the effects of preharvest 1-methylcyclopropene (1-MCP, Harvista TM ) and postharvest 1-MCP (SmartFresh TM ) treatments on the fruit quaitly attributes of codl-stored F‘u (i’j Malus domestica Borkh.) apples. Fruits were exposed to 0, 95, 125, or 250 mg ･L -1 Harvista TM at 3, 2, 1 weeks before harvest (WBH), and treated with 0 or 1 μL･L -1 SmartFresh TM at harvest. Fruit was then stored for up to 180 days at 0 ± 1°C. Fruit fresh weight, Hunter’s value a, internal ethylene concentration (IEC), flesh firmness, titratable acidity (TA), and soluble solids content (SSC) in fruit treated with H arvista TM were not different from those of control fruit at harvest. During cold storage, flesh firmness and TA were higher in fruit trea ted with 250 mg･L -1 Harvista TM at 2 and 3 WBH than in control fruit. IEC was 5.5-10.0% lower in fruit treated with 250 mg ･L -1 Harvista TM at 2 and 3 WBH compared with control fruit as storage duration progressed, while SSC was not affected. Furthermore, flesh firmness, TA, and IEC were affected neither by Harvista