บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Some effects of 1-MCP on the quality of clementine mandarin fruit stored at ambient temperature

Ait-Oubahou A.; Laamim M. and Benichou M.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.97

2004

บทคัดย่อ

Some effects of 1-MCP on the quality of clementine mandarin fruit stored at ambient temperature  The effect of 1-methylcyclopropene (1-MCP) an ethylene inhibitor o­n the quality of clementine mandarin (Citrus reticulata L.) fruit at relatively high (20°C) was evaluated. Fruit harvested at TSS/Acid ratio of 7.5 or higher with slight greenish colour of the peel were used o­n these studies. o­nly fruit, free from any external blemishes or disorder were used.

Trials consisted of fumigation of fruits with 1-MCP concentrations varying from 0, 500, 1000, 1500, 2000 and 2500 ppb exposure for a period of 20 h at 20°C. After application, o­ne bunch of fruit was treated during the first three days of storage at ambient temperature with 20 ppm of ethylene and the other bunch was kept at the same temperature of 18 to 20°C for 15 days without ethylene treatment. Quality parameters were evaluated at a regular interval of 5 days. Firmness as well as colour losses were higher in non treated fruit and from the samples treated with ethylene in comparison to fruit treated with different 1-MCP concentrations.

The control with no ethylene treatment has lost more than 15% of firmness against 8.40, 8.49 and 8.04 respectively for 1500, 2000 and 2500 ppb. Higher acid content and lower TSS were observed in 1-MCP treated fruits followed or no with exogenous ethylene treatment comparatively to the control. After 15 days of storage at 20°C, TSS/Acid ratio was 10.38 and 12.99 respectively for the control treated or no with ethylene. High temperature of 20°C, tends to reduce the effectiveness of 1-MCP depending o­n the concentration. These effects and other results will be discussed.