Grain samples (5-10 g), generally from early generation lines
are
equilibrated to 13% (soft) or 14% (hard) moisture content. They
are milled on the
micro mill, where four samples can be milled simultaneously.
The micro mill consists of two pairs of
corrugated rolls and double
sifters with 38 and 135 mesh stainless steel screens. The bran
over the 38 mesh screens is evaluated for milling properties by
visual examination for the degree
of bran clean up. The throughs
of the 135 mesh screen is the equivalent to break flour. This is
available for small scale predictive tests, such as SDS-sedimentation,
Flour Swelling Volume,
etc. A schematic of the micro mill is shown
in
Figure 3. (2),(13)
