Method for performing thick mash alcohol fermentation by using cassava dregs and fresh cassava
A technology for alcohol fermentation and fresh cassava, which is applied in the field of alcohol fermentation using cassava residue and fresh cassava thick mash, can solve the problems of insufficient utilization of residual starch of cassava residue, difficulty in realizing continuous production, low mass transfer efficiency, etc. The effect of equipment utilization, labor productivity reduction, and mass transfer efficiency improvement
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[0018] Example 1: (Laboratory)
[0019] A method for alcohol fermentation using cassava residue and fresh cassava mash includes the following steps:
[0020] (1) Sizing: In a stainless steel pot with a diameter of 20cm, add 1000g of cassava residue slurry with a particle size of less than 1.5mm and a moisture content of about 86%. The absolute dry cassava residue content is about 140g. Adjust the pH to about 6.2 with acid or lye. Then add 4200u α-amylase based on 30 u α-amylase per gram of absolutely dry cassava residue;
[0021] (2) Liquefaction and filtration: stir the slurry, and at the same time heat the steel pot to a slurry temperature of 90℃~110℃, keep stirring, keep it warm until the slurry is brown-red in the iodine solution test, and the holding time is generally 40 min~80min , Filter with 100 mesh nylon filter cloth to obtain filtrate with solid content of more than 8% by weight;
[0022] (3) Re-pulping, liquefaction and filtration: add cassava residue with a moisture cont...
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