Fig. 3. Changes in activities of exo- and endo-polygalacturonase (A and B) and
pectin methyl esterase (C). ‘21+3’ indicated ‘3 d of shelf life at 20 C after 21 d at
5 C .The bars in the figures represented standard deviation, and values followed by
different letters were significant difference according to Duncan’s Multiple Range
Test at P < 0.05.