ABSTRACT. This study aimed to evaluate the ripening of papaya fruit (Carica papaya L.) at room temperature (± 25°C) and 10°C with 80% relative humidity, coated with edible film based on sodium alginate (1%) and cellulose acetate film (3%) by dipping the fruit in the suspensions for 1 min. On the application of the treatment and every three days during 12 days of storage, fruit were evaluated for weight loss, firmness, total carotenoid content, lycopene content and vitamin C content of the pulp. The cellulose acetate film extended the shelf-life of papayas, without affecting their quality. This treatment delayed fruit ripening, whose changes in all the parameters analyzed were significantly slower than fruit treated with sodium alginate-based coating. The coating with cellulose acetate at 3% was more effective in the preservation of papaya stored for 12 days under both temperatures.Keywords: coating, ripening, storage.Uso de película à base de alginato de sódio e acetato de celulose na conservação pós-colheita de mamão RESUMO. Este estudo teve como objetivo avaliar o amadurecimento de mamão (Carica papaya L.) à temperatura ambiente (± 25°C) e a 10ºC, com 80% de umidade relativa, revestido com filme comestível à base de alginato de sódio (1%) e película de acetato de celulose (3%) por meio de imersão dos frutos nas suspensões durante 1 min. Na aplicação do tratamento e a cada três dias, durante 12 dias de armazenamento, os frutos foram avaliados quanto à perda de peso, firmeza, concentração total de carotenoides, licopeno e teor de vitamina C da polpa. O filme de acetato de celulose estendeu o prazo de validade do mamão, sem afetar a sua qualidade. Este tratamento retardou o amadurecimento dos frutos, cujas alterações em todos os parâmetros analisados foram significativamente mais lentas que os frutos tratados com revestimento à base de alginato de sódio. O revestimento com acetato de celulose a 3% foi mais eficaz na preservação do mamão armazenado por 12 dias sob as duas temperaturas.Palavras-chave: revestimento, amadurecimento, armazenamento.
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