Tratamento térmico na manutenção da coloração de lichias
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2010-03-01
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The objective of the work was to evaluate the influence of the thermal treatment in the color of lychee fruits. The fruits were treated by 0; 5; 10; 15; 20 and 25 minutes of water immersion at 45°C, packaged in expanded polystyrene trays and film of polyvinyl chloride 0.020mm, stored in B.O.D. at 5°C and 90±5% of UR. The experimental delineation was in a completely randomized scheme, with 6 times of storage for the color and enzymatic analysis, until they reached the limit for the marketing for the analysis of the shelf-life, and the fruits were analyzed every 3 days, with 3 replications and 10 fruits in each experimental unity. The evaluated parameters were: visual analysis of the browning, color and specific activity of the polyphenol oxidase and the peroxidase. The treatments using 5 and 10 minutes of immersion showed the best results in maintaining the color of the fruits and in the reduction of the enzymatic activity.
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Português
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Revista Brasileira de Fruticultura, v. 32, n. 1, p. 67-73, 2010.
