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Physiological and biochemical responses of Hass avocado fruits to cold-storage in controlled atmospheres.

Author(s) : CORRALES-GARCIA J.

Summary

Late-season avocado fruits (Persea americana Mill., cv Hass) were kept at 2 or 5 °C for 30 days in air or in controlled atmospheres (CA) containing 5% O2 + 5% CO2 (5 + 5) or 2% O2 + 15% CO2 (2 + 15), the balance being N2 in both CA. The fruits were evaluated immediately upon removal from cold storage (unripe), and during ripening in air at 20 °C. Acetaldehyde and ethanol contents in pulp, external fruit colour, and flesh firmness were tested. Respiratory rate, softening, external colour change were studied. In general, acetaldehyde contents were significantly higher in unripe fruits whereas ethanol contents were significantly higher in ripe fruits. Cold storage in air caused significantly higher contents of ethanol than cold storage in CA. Fruits held in (2 + 15) showed levels of acetaldehyde and ethanol significantly lower than the fruits kept in air or in (5 + 5), indicating that the most extreme CA reduced this adverse effect caused by cold storage (chilling injury).

Details

  • Original title: Physiological and biochemical responses of Hass avocado fruits to cold-storage in controlled atmospheres.
  • Record ID : 2001-0272
  • Languages: English
  • Source: CA '97. Proceedings of the 7th international controlled atmosphere research conference.
  • Publication date: 1997/07/13
  • Document available for consultation in the library of the IIR headquarters only.

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