2.3.2. Preparation of whole wheat flour by entire wheat grain
grinding
Whole wheat flours were prepared by hammer mill (HM), stone
mill (SM) and ultra-fine mill (UM) processes, during which entire
wheat grain was ground by a hammer mill (Penten 3100, Sweden),
an electric stone mill (custom-tailor) and an FDV ultra-fine mill
(Beijing Kingslh Instruments Ltd., Beijing, CN), respectively. Whole
wheat flours collected from above processes were all passed
though a CQ20 screen before use.