This paper presents a comparative analysis of sorptive properties of type 2000 wheat and rye flours. The main aim of the study was to examine the influence of the raw material on the sorptive properties of the flours. Flours which were used as specimens were produced in a laboratory at identical milling conditions. The following parameters of sorption were identified: monolayer capacity with the corresponding water activity, energy constant, specific sorption surface, size and volume of capillaries. Certain differences of sorption parameters of the flours were found, however they can be neglected from a practical point of view.
This study was based in the morainic zone and zone of ice-dammed lake origin of a young-glacial landscape as well as in riverine and delta landscapes, involving the sorptive properties of mucky soils and variously silted peat-muck soils which were termed upper silted organic soils. These soils had a low share of exchangeable potassium and magnesium in relation to the total content of these elements. In the soils of riverine and delta landscapes as well as in slightly silted peat-muck soils of morainic landscape, the process of decalcitation was noted. Higher cation exchange capacity and amount of base cations in the soils of the landscape of ice-dammed lakes in comparison to the soils of morainic hills, suggest their high resistance to chemical degradation.