The aim of the study was to compare potato and potato-tapioca hydrolysate quality obtained by membrane filtration with the application of tubular ceramic membranes. The substrate for membrane filtration was maltodextrins obtained by enzymatic hydrolysis of potato and a mixture of potato and tapioca starches. Colour, turbidity, iodine value, qualitative and quantitative distribution of carbohydrate (HPLC), amount of reducing groups and viscosity were determined. The influence of starch source on permeate flow rate and hydrolysate quality was investigated. Results of hydrolysate membrane filtration were compared with the results obtained during conventional filtration. According to the literature, results of research confirmed better quality parameters of membrane hydrolysates than hydrolysates obtained by conventional filtration. Hydrolysates obtained from a mixture of potato and tapioca starches indicate better filtration ability than only potato hydrolysates.