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      INFLUENCE OF 1-METHYLCYCLOPROPENE ON THE BIOCHEMICAL RESPONSE AND RIPENING OF ‘SOLO’ PAPAYAS Translated title: INFLUÊNCIA DO 1-METILCICLOPROPENO SOBRE A RESPOSTA BIOQUÍMICA E AMADURECIMENTO DE MAMÕES ‘SOLO’

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          Abstract

          ABSTRACT The market demand for tropical fruits has been growing steadily over the past two decades and global papaya production has grown significantly over the last few years. This sector, however, suffers greatly from postharvest losses due to reduced quantity and quality of fruits between harvest and consumption. The use of ethylene inhibitors after harvest could improve the final quality of the fruit to satisfy the consumer and also minimize waste. The physiological and biochemical responses of ‘Solo’ papayas treated with the ethylene inhibitor 1-methylcyclopropene (1-MCP) to extend storage shelf life and maintain quality during long-term storage are deeply discussed in this study. Papaya fruits arrived at Cranfield University (CU) and received a 24 h 1-MCP, being stored at 20 ºC for 10 days. The ethylene inhibitor 1-MCP application significantly delayed ‘Solo’ papaya ripeness on fruit storage by reducing respiration rate and ethylene production. There was a delay from 7 days in fruit firmness loss and the retention of green peel colour was increased. Inhibition of ethylene perception by 1-MCP did not prevent the accumulation of sugars and the mean values were similar and higher than those found for control fruits, which are possibly due to the lower reaction speed, leading to a higher accumulation.

          Translated abstract

          RESUMO O mercado de frutos tropicais cresceu constantemente ao longo das duas últimas décadas e a produção mundial de mamão tem crescido significativamente nos últimos anos. No entanto, esse setor sofre muito com as perdas pós-colheita devido à reduzida quantidade e qualidade dos frutos entre a colheita e o consumo. A utilização de inibidores de etileno após a colheita poderia melhorar a qualidade final do fruto para satisfazer o consumidor e também minimizar o desperdício. As respostas fisiológicas e bioquímicas de mamões ‘Solo’ tratados com o inibidor de etileno 1-metilciclopropeno (1-MCP) para prolongar a vida útil e manter a qualidade durante o armazenamento a longo prazo são detalhadamente discutidas neste estudo. Os frutos chegaram à Universidade de Cranfield (UC) e receberam tratamento com 1-MCP por 24 h, sendo armazenados a 20 ºC durante 10 dias. A aplicação do inibidor de etileno 1-MCP retardou significativamente o amadurecimento de mamões ‘Solo’ no armazenamento dos frutos, reduzindo a taxa de respiração e a produção de etileno. Houve um atraso de 7 dias na perda de firmeza e a retenção da cor verde da casca dos frutos foi aumentada. A inibição da percepção de etileno pelo 1-MCP não impediu o acúmulo de açúcares e os valores médios foram semelhantes e superiores aos encontrados para as frutas do tratamento controle, que são possivelmente devido à menor velocidade de reação, levando a um maior acúmulo.

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          Ethylene removal and fresh product storage: a challenge at the frontiers of chemistry. Toward an approach by photocatalytic oxidation.

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            Understanding color models: a review

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              Antioxidant systems of ripening avocado (Persea americana Mill.) fruit following treatment at the preclimacteric stage with aqueous 1-methylcyclopropene

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbf
                Revista Brasileira de Fruticultura
                Rev. Bras. Frutic.
                Sociedade Brasileira de Fruticultura
                1806-9967
                2016
                : 38
                : 2
                : e-791
                Affiliations
                [1 ] Universidade Federal de São Carlos Brazil
                [2 ] University Cranfield Grã-bretanha
                [3 ] Embrapa Instrumentação Brazil
                [4 ] Embrapa Instrumentação Brazil
                [5 ] University Cranfield Grã-bretanha
                Article
                S0100-29452016000200301
                10.1590/0100-29452016791
                f6f942be-d7b0-4ed7-8d4a-61d5b579d9fb

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0100-2945&lng=en
                Categories
                HORTICULTURE

                Horticulture
                Carica papaya L.,fruit quality,fruit waste,1-MCP,tropical fruits,qualidade,desperdício,frutos tropicais

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