FIELD: flour milling and baking industry.
SUBSTANCE: method for measuring wheat grain hardness includes grain milling and measuring the maximum milling collapsing force. The maximum collapsing force is measured by taking microphotographs of the resulting flour using optical microscope. On these photographs at least 300 segments are drawn from the centre of mass into all directions of the figure composed by the contour of the flour particle. Then the arithmetical average X (mcm) of the resulting segments and the length variation quotient K (%) of these segments are calculated. Then the maximum collapsing force, Pmax, plastograph unit, using the following formula:
Pmax=9,51·Xavg+6,02·Kavg+112,04, where Xavg is the average X value after measuring at least 5000 pieces of grain (mcm) and Kavg is the average value of K after measuring at least 5000 pieces of grain.
EFFECT: more accurate wheat grain hardness measurement; test time reduction; labour intensity reduction.
1 dwg, 3 tbl, 3 ex
