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Horticultura Brasileira

versão impressa ISSN 0102-0536

Resumo

TERUEL M, Bárbara J; CORTEZ, Luís A. B; LEAL, Paulo A  e  NEVES FILHO, Lincoln C. Postharvest characterization of oranges 'Baianinha' stored under refrigeration and ambient conditions. Hortic. Bras. [online]. 2000, vol.18, n.1, pp.46-48. ISSN 0102-0536.  http://dx.doi.org/10.1590/S0102-05362000000100010.

The postharvest quality of fresh oranges (Citrus sinensis (L.) Osbeck, 'Baianinha') was evaluated in terms of chemical and physical properties, in May of 1998. An experiment was carried out in a completely randomized design, with two replications, submitting the fruits to two treatments: storage at ambient conditions (21 ± 0.4°C and RH = 60 ± 1.0%, and in cold room (1 ± 0,5°C and RH = 85 ± 2,5%). After 15 days of storage, a highly significant difference was observed (P=0,01) in the levels of ascorbic acid (decrease of 20% and 8%, at ambient condition and refrigerated fruits, respectively). Titratable acidity decrease approximately 14%, for fruits at ambient condition, and 8% for the refrigerated fruits. It was observed an increase of 30% (ambient condition) and 18% (refrigerated fruits), in the brix/titratable acidity ratio. The results demonstrated that there is a tendency of quality loss for fruits maintained at ambient condition. Therefore, the use of refrigeration is necessary for the maintenance of post harvest quality of fresh orange.

Palavras-chave : Citrus sinensis (L.) Osbeck; ascorbic acid; titratable acidity; pH; soluble solids.

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