บทคัดย่องานวิจัย

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Factors affecting efficacy of 1-MCP to maintain quality of apples fruit after storage

Argenta L.C., Mattheis J.P. and Fan X.F.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, 143 p.

2004

บทคัดย่อ

Factors affecting efficacy of 1-MCP to maintain quality of apples fruit after storage   Many potential benefits of 1-MCP to manage fruit quality during and/or after storage have been identified.The degree to which ripening processes are inhibited and quality maintenance enhanced by 1-MCP is dependent of several factors.Responses induced by 1-MCP increase with concentration from 10 ppb to 1 ppm and saturation responses occur in 12 h exposure when 1 ppm of 1-MCP is applied.In general, fruit temperature during treatment was not critical.

Experiments conducted with ‘Delicious’ and Gala’ apples harvested over a 4 week period indicated that fruit harvested after optimum maturity for long-term CA is benefited from use of 1-MCP.However, the potential for long-term storage of late harvested fruit remains low compared to fruit harvested earlier.The duration of responses induced by MCP can also be influenced by an interaction between fruit maturity and treatment concentration.Riper fruit may require higher MCP concentration (1 ppm) for maximum duration of MCP induced responses.The length of the delay between harvest/cooling and treatment is another critical factor determinant of 1-MCP efficacy.

Experiments conducted with ‘Granny Smith’ and ‘Gala’ apples indicated that maximum control of fruit softening, superficial scald and senescent breakdown is achieved by treatment as soon after harvest as possible.Effect of 1-MCP o­n retention of fruit firmness and acidity of ‘Gala’ apples throughout 28 weeks storage were more evident in RA-than in CA-storage.However, the combination of 1-MCP treatment then storage in CA can provide benefits in excess of either treatment alone.