Time of Year at Harvest Influences the Effect of 1- Methylcyclopropene on Shelf life and Quality of Cavendish Bananas
F. Moradinezhad, M. Sedgley, A. Klieber and A. J. Able
Program and Abstract. Australasian Postharvest Horticulture Conference. Royal Lakeside Novote., Rotorua, New Zealand. 27-30 September 2005. July 5-10, 2005. Page 49
2005
บทคัดย่อ
Post-ripening 1-methylcyclopropene (1-MCP) exposure was examined throughout the year to determine the influence of time of year at harvest on the effect of 1-MCP on shelf life and quality of bananas. Green Cavendish bananas (var. ‘Williams’ ) from the middle section of the bunch were harvested bimonthly during 2004 and treated with 100 µL L-1 ethylene on two consecutive days prior to 0, 100, 700, 1000, 3000 or 10000 nI. L-1 1-MCP exposure for 24 his at 22 °C. treated bananas were then stored at 22 °C until the end of the experiment. 1-MCP treatment at a concentration of 300 nL L-1 or above increased banana shelf life significantly compared to the control, regardless of whether fruit was harvested in different months. However, fruit harvested in May was significantly more responsive with 108% increase in shelf life. Interestingly, this was not significantly correlated with the quality parameters: firmness, weight loss or total soluble solids (TSS). Firmness of 1-MCP treated fruit was up to 19% greater than the control except in January where no effect occurred. In general, lower levels of weight loss and discolouration were observed in 1-MCP treated fruit regardless of harvest time while 1-MCP had not effecton TSS.