Evaluation of the application of 1-methylcyclopropene on the quality parameters of 'Kieffer' pears during cold storage
DOI:
https://doi.org/10.21674/2448-0479.111.22-31Keywords:
pears, fruit growing, postharvest, quality parameters.Abstract
Pears are an important fruit species whose cultivation and consumption have recently grown in Brazil. Among the pear cultivars produced in Brazil, the 'Kieffer' pear, also known as 'hard pear', is prominent, particularly in Serra Gaúcha and Rio Grande do Sul. Due to their seasonal characteristics, pear production often requires storage to ensure year-round supply. However, in many situations, refrigerated storage alone is insufficient to maintain fruits quality during conservation. Consequently, the use of 1-methylcyclopropene (1-MCP) as a fruit ripening inhibitor is increasing. This study aimed to evaluate the effect of applying increasing doses of 1-MCP on the conservation and quality parameters of 'Kieffer' pears stored under refrigeration. The experiment was conducted in Caxias do Sul, RS, between April and August 2024. Treatments consisted of zero, 50%, 100%, 150%, and 200% of the 1-MCP dose recommended for the crop. Following 1-MCP treatment, the pears were stored for 120 days in a cold chamber. Subsamples from each treatment were taken monthly until the end of the storage period, and the pulp firmness, soluble solids content, titratable acidity, SS/AT ratio, and pulp pH were evaluated. Data were statistically analyzed using Analysis of Variance, and means were compared by Tukey's test at a 5% significance level. Results showed that 1-MCP application had a minimally pronounced effect on pear quality parameters, being non-significant for titratable acidity and SS/AT ratio. Thus, it can be concluded that applying 1-MCP, regardless of the dose, is not advantageous for preserving the quality of 'Kieffer' pears under refrigerated conditions.
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