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Horticultura Brasileira

versão impressa ISSN 0102-0536

Resumo

TERUEL, Bárbara J.; CORTEZ, Luís A. B.  e  NEVES FILHO, Lincoln C.. Refrigerated container: an alternative for postharvest conservation. Hortic. Bras. [online]. 2000, vol.18, n.2, pp.104-108. ISSN 0102-0536.  http://dx.doi.org/10.1590/S0102-05362000000200005.

Refrigeration is an excellent method for storing horticultural fresh products such as fruits and vegetables. The use of refrigerated containers is a simple and ready-to-use technology allowing better quality and decreasing postharvest losses. In this work some experiments were conducted with a refrigerated container in two operating conditions: with and without load. The following variables were evaluated: air temperature, air velocity, air relative humidity, and pressure of the refrigeration system. The lettuce (Latuca sativa L.) half-cooling time was also determined when this product was stored at 1ºC. It was observed that the container surfaces receiving more radiation presented temperature increases of 1,5 ± 1ºC in contrast to the surfaces that were less exposed. Air speed ranged from 2.1; 1.7 and 0.3 m/s for the three studied surfaces. The lettuce half-cooling time varied from 530 min and 1.080 min, depending on the position of the head of lettuce in the container. The relative humidity of the air was 81-86% ± 1% in the empty container and 90-91 ± 1%, for the loaded container.

Palavras-chave : Latuca sativa L.; storage; refrigeration; efficiency.

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