The roller milling of sorghum and quinoa seeds into flour fractions (coarse, middle, fine) was investigated, chemically analysed, applied in the baking gluten-free sourdough bread. gap settings were adjusted to 0, 5, 8, 10 for quinoa, 3, 7 sorghum. fine reached values up about 41% (gap 8) around 20% 5). SEM pictographs illustrated clear separation each fraction with chemical analysis showing hi...