Whole stillage

Table 4.1.8A. Distillers grains with solubles, dried (IFN 5-02-843).The product obtained after the removal of ethyl alcohol by distillation from the yeast fermentation of a grain or a grain mixture by condensing and drying at least 75% of the solids of the resultant whole stillage by methods employed in the grain-distilling industry. The predominating grain shall be declared as the first word in the name (AAFCO, 2005) and that determines the exact IFN number (maize product in table below).

Pressure-driven membrane processes have also been applied for recovery of valuable residual or side-products present in the spent fermentation broth, which is called whole stillage. It contains fiber, oil, protein, diverse unfermented components of the grain, and yeast cells (Abels et ak, 2013). The whole stillage can be separated into two streams—namely, thick stillage and thin stillage—via centrifugation or vacumn belt filtration. Membrane separations can be used for the recovery of valuable solids from thin stillage (Arora et ak, 2009). 

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