RESUMOObjetivou-se com este trabalho avaliar o efeito de duas intensidades de dano mecânico por impacto, da aplicação do 1-metilciclopropeno (1-MCP; 625 nL L -1 ) e da interação entre dano mecânico e o uso do 1-MCP sobre a qualidade de maçãs 'Royal Gala' armazenadas sob refrigeração. Os tratamentos avaliados foram: controle (sem dano e sem 1-MCP), dano mecânico (10 cm), dano mecânico (30 cm), sem dano com aplicação de 1-MCP, aplicação de 1-MCP seguido de dano mecânico (10 cm), dano mecânico (10 cm) seguido de aplicação de 1-MCP, aplicação de 1-MCP seguido de dano mecânico (30 cm), e dano mecânico (30 cm) seguido de aplicação de 1-MCP. Os frutos foram armazenados por dois e quatro meses em ambiente refrigerado (0 ± 0,1 ºC/94 ± 2% UR) seguidos por sete dias em condição ambiente (20 ± 2 ºC/60 ± 5% UR). O dano mecânico provocou escurecimento da polpa no local danificado. Quanto maior a intensidade do dano mecânico maiores são os efeitos sobre o escurecimento dos tecidos. O 1-MCP não reduz a intensidade de escurecimento de polpa em frutos submetidos a dano mecânico, porém contribui para manutenção da firmeza de polpa e acidez titulável de maçãs 'Royal Gala'. Palavras-chave: Amadurecimento, injúria, Malus domestica, pós-colheitaInteraction between mechanical damage and 1-MCP on the quality of 'Royal Gala' apples stored ABSTRACTThe objective of this work was to evaluate the effect of two intensities of impact damage, the application of 1-methylcyclopropene (1-MCP; 625 nL L -1 ) and the interaction between mechanical damage and the use of 1-MCP on the quality of Royal Gala apples' stored under refrigeration. The treatments were: control (without damage and without 1-MCP), mechanical damage (10 cm), mechanical damage (30 cm), without damage with application of 1-MCP, application of 1-MCP followed by mechanical damage (10 cm), mechanical damage (10 cm) followed by treatment with 1-MCP, treatment with 1-MCP followed by mechanical damage (30 cm), and mechanical damage (30 cm) followed by treatment with 1-MCP. The fruits were stored for two and four months under refrigeration (0 ± 0.1 ± 2 °C/94% RH) followed by seven days at ambient temperature (20 ± 2 °C/60 ± 5% RH). The mechanical damage caused browning in the pulp. The increasing of the mechanical damage intensity causes a greater effect on the darkening of the pulp. The 1-MCP did not reduce the intensity of browning in fruits subjected to mechanical damage, but contributes to the maintenance of flesh firmness and titratable acidity of apples Royal Gala.
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