บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

The response of the ‘Carabao’ mango to controlled atmospheres.

Lizada M.C.C., Biglete-Flor N.A., Garcia N.L.

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

2004

บทคัดย่อ

The response of the ‘Carabao’ mango to controlled atmospheres.    Earlier attempts to apply controlled atmosphere (CA) systems todelay ripening in the ‘Carabao’ mango (known in trade as the ‘Manila Super’ mango) have not been successful.This is mainly due to its susceptibility to fermentation at reduced oxygen, exhibiting internal breakdown (IB) even at 7% O2.This susceptibility is affected by maturity, temperature and growing conditions.

In a study conducted to document the response of ‘Carabao’ mangoes to low O2, fully mature, sound fruits were held at varying O2 levels with or without added CO2.Fruits were observed to respond favourably to 5% O2 at a temperature of 12.5 °C , if harvested at the fully mature stage.Carbon dioxide at 12.5% or 25% did not significantly affect fruit response to low O2.As this cultivar starts producing ethylene even before full harvest maturity is attained, the timing of low oxygen treatment is critical.

Susceptibility to disorders evidently depends also o­n adaptive physiological mechanisms that occur under low O2.In the absence of such mechanisms, fruits exhibit symptoms typical of hypoxia: elevated acetaldehyde and ethanol level leading to tissue death and lesions referred to as spongy tissues.As with other cultivars, the success of CA holding also depends o­n pre- and postharvest disease control measures, particularly in growing areas where existing environmental conditions fovour disease development.With appropriate measures to control disease, CA can extend the marketable life of ‘Carabao’ mangoes to as long as 33 to 40 days.