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The effect of 1-MCP on storage potential of plum (Prunus domestica)

Tully M.S., Hanney S.J., Bishop C.F.H.B.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.70

2004

บทคัดย่อ

The effect of 1-MCP on storage potential of plum (Prunus domestica) Victoria plums were harvested o­n o­ne date, from two different agri-climatic areas, with Margorie and Greengage harvested from o­n location at a later date.Samples of the fruit were treated with 1-MCP (SmartfreshTM) within 12 h of harvest, prior to storage in air.The 1-MCP was applied at 650 nL L-1 for 24 h at 1 °C.

All fruit was stored in air at 1 °C for 28 days.Fruit was removed from the cold store at 7 day intervals, with each sample having a untested subsample transferred to 20 °C for 7 days. The fruit quality was tested by colorimeter (Minolta a* reading), the presence of decay, pressures and soluble sugars.For both cultivars the most notable effect of 1-MCP was the improved firmness of fruit both from cold storage and after 7 day at 20 °C.The agri-climate region had an effect o­n the fruit pressure in Victoria, with a 7 day benefit over the untreated sample for the firmness to drop below 4 kg cm-2.There was a similar benefit for greengage.

The firmness for Margorie was around 3.5 kg cm-2 at harvest, but the 1-MCP treatment sample did not decrease to below 3.5 until 35 days, with the control falling below this figure after 21 days.