[PH-static pectin esterase analysis in sweet cherries (author's transl)].

For the analysis of pectin esterase (PE) activities in sweet cherries some methods, as described in literature, were tested as to their usefulness in this specific range of application. The PE activities in dependence of the methods of extraction, the pH-value and the temperature were examined and a suitable procedure was achieved. With this method the PE activities in deposited sweet cherries were analyzed.