Fraunhofer IWKS, mechanocatalytic partial depolymerization was analogous carried out in a Fritsch Pulverisette 6 with 144.15 g zirconia balls with a diameter of 10 mm. Due to heat development during the grinding process a program with a milling duration of 5 min at 500 rpm followed by a cooling cycle of 2 min was chosen. For clarity, only the effective milling duration without the cooling cycles is given. To show that mechanocatalytic partial depolymerization is a reproducible method for polysaccharide digestion towards oligomeric glycans, three identical experiments with apple pomace pre-extracted with hot water at the Fraunhofer IWKS were carried out and compared with each other