Grain pretreatment

Grain pre-treatment is part of the first steps of raw material transformation.  During this step, the saccarification and simultaneous fermentation (SSF) procedures are used.

Raw material preparation‘s aim is to modify the starch in fermentable sugars assimilated by yeast.

• The cereals are crushed before feeding the process.
• The milling is pasted with water before feeding the starch liquefaction unit where the starch is liquefied by enzymatic hydrolysis at low temperature.
• Amyloglucosidases enzymes are added to the step of saccharification to obtain glucose molecules fermented by the yeasts.

• Capacities from 90 000 l/d to 850 000 l/d.
• Pasting at high level of dry matter.
• Compatible with numerous raw material : corn, wheat, rye, triticale, cassava, starch B and by-products of starch manufacture

• Low steam pressure for the liquefaction
• Reduced number of equipment
• Simultaneous Saccharification and Fermentation (SSF) with a step of pre-saccharification: reduce enzyme and steam consumption, fermentation time, obtain a higher alcohol content and control the infection risk.
• Vinasses recycling : low water consumption, limiting steam consumption.
• Possible Energetic integration, limiting steam consumption.