Fig. 1: Changes in peel browning.

a Peel-browning incidence. b Peel-browning index (BI) of “Nanguo” pears during the refrigeration and subsequent shelf life periods. LT (60 d) and LT (120 d) indicate pears maintained at low temperature (0 ± 0.5 °C) for 60 and 120 d, respectively. The values represent the mean and corresponding SD (n = 3). Different letters indicate a 5% level of significance as determined by pairwise Student’s t-test