efeito do 1-metilciclopropeno na conservação de maçãs 'royal gala' em ar refrigerado e atmosfera controlada effects of 1-methylcyclopropene on 'royal gala' apples stored in refrigerated air and controlled atmosphere

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ID: 257348
2004
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Abstract
Maçãs 'Royal Gala', colhidas em dois estádios de maturação, foram tratadas com 1-MCP (1-metilciclopropeno) nas concentrações de 0; 625 e 1250 nL.L-1, durante 48 horas, à temperatura de 20 ± 2 ºC. Após este tratamento, foram armazenadas em dois diferentes sistemas: em atmosfera controlada à temperatura de 0 ± 0,5 ºC, 2,1 a 2,3 kPa de CO2 , 1,8 a 2,0 kPa de O2 e umidade relativa de 95 ± 5 %, durante 9 meses. Em ar refrigerado a 0,5 ± 0,5 ºC e 95 ± 5 % de umidade relativa, durante 8 meses. As análises realizadas demonstraram a eficiência do 1-MCP em controlar a maturação das frutas durante o armazenamento em ambas as condições e pontos de colheita. A aplicação do 1-MCP reduziu drasticamente a produção de etileno, diminuiu a perda de firmeza, além de preservar a acidez total titulável.
In the present work were evaluated the effects of 1-MCP on 'Royal Gala' apples stored in refrigerated air and controlled atmosphere. 'Royal Gala' apples were harvested at two ripeness stages and treated with 1-methylcyclopropene (1-MCP) using two concentrations 625 and 1250 nL.L-1 which were applied during 48 hours at temperature of 20 ± 2 ºC. The control fruit was only kept in air. After the treatments the apples were stored in either controlled atmosphere 2,1 to 2,3 kPa CO2, 1,8 to 2,0 kPa O2 and 95 ± 0,5 % of relative humidity for 9 months at 0 ± 0,5 ºC or in refrigerated air storage at 0,5 ± 0,5 ºC and 95 ± 0,5 % of relative humidity, for 8 months. The 1-MCP applications on apples in both storages and ripening stages reduced dramatically the ethylene production. Pulp firmness losses and titratable acidity were also significanthy higher compared to control fruit.
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Authors ;Adriana Regina Corrent;Aguinaldo Parussolo;Cesar Luiz Girardi;Cesar Valmor Rombaldi
Journal technocom
Year 2004
DOI
10.1590/S0100-29452004000200009
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452004000200009
Keywords
ethylene postharvest malus domestica

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