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Revista Brasileira de Fruticultura
versão impressa ISSN 0100-2945
MIGUEL, Ana Carolina Almeida; DURIGAN, José Fernando e FERRAUDO, Antonio Sergio. Multivariate analysis that can be used to evaluate the chilling injury in mangoes cv. Tommy Atkins. Rev. Bras. Frutic. [online]. 2011, vol.33, n.spe1, pp. 371-376. ISSN 0100-2945. http://dx.doi.org/10.1590/S0100-29452011000500047.
This study aimed to identify the variables associated with chilling injury and to determine the differences in quality parameters that better characterize mangoes 'Tommy Atkins' under condition of chilling injury, through the use of factor and cluster analysis. Semi-ripe fruits were harvested and carefully transported, selected and standardized for color, size and absence of injuries, and treated with fungicide, before storage at 2 °C (74,8% RH), 5 °C (75,4% RH) and 12 °C (76,4% RH) for 28 days. Fruits were evaluated weekly for the occurrence of chilling injury, peel and pulp color firmness, soluble solids, titratable acidity, soluble and reducing sugars, and ascorbic acid content. Activities of peroxidase, polyphenoloxidase and phenylalanine ammonia-lyase were determined, as well. The multivariate statistic analysis helped to better understand the storage effect in the metabolism of mangoes 'Tommy Atkins' under chilling condition, and indicated that the damage is closely related to the peel, and that the pulp response to the stress occurs later.
Palavras-chave : Mangifera indica; postharvest; multivariated analysis; refrigerated storage; chilling injury.