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Storage of 'Brasília' carrot treated with waxes

The effect of treatments with several waxes in the postharvest preservation of carrot 'Brasília' was evaluated, using Citrosol A, Citrosol M, Citrosol AK, Citrosol Papaya, Bentevi undiluted, Bentevi with dilution 1:3 (in water), Bentevi with dilution 1:6, Fruit Wax undiluted, Fruit Wax with dilution 1:3, Fruit Wax with dilution 1:6, Stafresh, Megh Wax undiluted, Megh Wax with dilution 1:3 and Megh Wax with dilution 1:6. Carrots without wax treatment were used as control. After treatments the carrots were kept at room temperature (26ºC and 70% relative humidity). Fresh weight loss, turgor pressure (by flattening method), incidence of decay and appearance were evaluated two, four, six and eight days after storage. The experiment was set in a completely randomized design with fifteen treatments. Four replications and ten roots per plot were used. The Citrosol A, M and AK caused 100% decay after two days at room temperature. After eight days the lowest percentage of decay was observed in carrots treated with pure Stafresh and Bentevi. The fresh weight loss was high during the experiment. Only Stafresh and Bentevi alone showed some protection against root loss. The high fresh weight loss caused the lowest turgor pressure of roots in all treatment, except for Stafresh treatment, which kept higher turgor pressure until the 6th day. Only Stafresh treatment was able to maintain the quality of carrots cv. Brasília during 6 days of storage. No benefits were detected in the postharvest preservation of carrot roots by using other wax treatments.

Daucus carota L.; postharvest; turgor pressure; shriveling


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