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Ethylene production of 'Hayward' kiwifruit after ultra low oxygen or controlled atmosphere storage.

Antunes, M. D. C.; Sfakiotakis, E. M.;

Acta Horticulturae Year: 1997 Issue: No. 444 Pages: 535-540 Ref: 14 ref.

1997

บทคัดย่อ

Ethylene production of 'Hayward' kiwifruit after ultra low oxygen or controlled atmosphere storage.

The ethylene biosynthetic pathway of Hayward kiwifruits (harvested in Pieria, northern Greece) at harvest and after storage in controlled atmosphere (CA) or ultra low oxygen (ULO) were studied. Fruits were stored for 60, 120 or 180 days at 0 deg C in ULO (0.7% O2 + 0.7% CO2 or 1% O2 + 1% CO2), CA (2% O2 + 5% CO2) or air. Fruits held at 20 deg in air (free of ethylene), were not able to produce ethylene in the first few days unless treated with propylene (130 micro l/litre). The propylene treated fruits showed autocatalysis of ethylene production with concomitant changes in ACC content and the activities of ACC synthase and ACC oxidase. Upon transfer to air at 20 deg , air- and CA-stored fruits showed the capacity to produce ethylene after a lag period of 3 days, but this capacity decreased with increasing storage period. Fruits in ULO storage were not able to produce ethylene, which was attributed mainly to low ACC oxidase activity.