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OALib Journal期刊
ISSN: 2333-9721
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Qualidade pós-colheita do caqui ‘Fuyu’ tratado com a promalina = Postharvest quality of “Fuyu” kaki treated with Promalin

Keywords: Diospyrus kaki , armazenamento refrigerado , firmeza , poligalacturonase , refrigerated storage , firmness , polygalacturonase

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Abstract:

Considerando a importancia comercial do caqui ‘Fuyu’, a pesquisa teve como objetivos avaliar o efeito da promalina aplicada durante o cultivo do caqui ‘Fuyu’ bem como o uso de diferentes temperaturas de armazenamento na qualidade pós-colheita dos frutos. A utiliza o da camara fria (4oC, uso comercial) manteve a boa firmeza dos frutos para a comercializa o acima de 16 dias, para os frutos, sem e com a aplica o de promalina no pomar, enquanto que, na temperatura ambiente (20-26oC), os tempos foram de 16 e oito dias, respectivamente. A promalina contribuiu para a melhoria da firmeza dos frutos armazenados em camara fria, mas n o produziu o mesmo efeito em frutos armazenados em temperatura ambiente. A atividade da enzima poligalacturonase (PG) foi coincidente com a altera o de firmeza dos frutos, e o pH diminuiu. Considering the commercial value of the ‘Fuyu’ kaki, this study aimed to evaluate the effect of Promalin applied to the orchard as well as the use of different storage temperatures in the quality of postharvest fruits. The cold chamber (4oC) kept the fruit with good firmness quality for commercialization over 16 days, for both treatments, without and with Promalin applied in the orchard; whereas, at room temperature (20-26oC) the periods were 16 and 8 days, respectively. The Promalin contributed to the improvement of firmness in fruits stored in the cold chamber, but it did not have a similar effect in fruits at room temperature. The activity of the polygalacturonase enzyme was coincident with the change in fruitfirmness and the pH decreased.

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