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Polygalacturonase (PG) and Polyphenoloxidase (PPO) activity of ‘Lingwu Long’ Jujube fruit treated with 1-MCP, CaCl2, or their combination during 15 days at room temperature (22 ± 1 °C). Each value is the mean of three replications, and vertical bar represents the standard error of the means (n = 3)
