Effect of preharvest and postharvest calcium treatments on chilling injury and decay of cold stored fortune mandarins.
D’ Aquino S., Palma A., Agabbio M., Fronteddu F.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.93
2004
บทคัดย่อ
Effect of preharvest and postharvest calcium treatments on chilling injury and decay of cold stored fortune mandarins.
Fortune mandarins are very susceptible to chilling injury during cold storage.Calcium is reported to alleviate chilling injury in different horticultural products.In this experiment the effect of foliar application of calcium chloride and postharvest application of calcium chloride alone or in combination with soya lecithin on visual appearance, chilling injury and decay were studied.Trees were sprayed on 20 October, 19 November, 18 December 2002 and 21 January 2003 with a solution of 500 ghL-1 of a commercial product containing calcium chloride.Fruit were harvested on 16 April and subjected to the following treatments as dipping in solution/emulsion of calcium, lecithin or calcium plus lecithin.Fruit were stored at 5 °C for 1 or 2 months.Calcium reduced the severity of chilling injury either in preharvest or in postharvest application.Lecithin had also a beneficial effect on chilling injury and showed a positive interaction in combination with calcium.However the incidence of decay was higher in fruit treated especially in fruit subjected to both pre and postharvest calcium treatments.Very positive was the effect of lecithin in the maintenance of fruit freshness.