A kind of method utilizing Mierocrystalline cellulose rapid deep zone fermentative production acetic acid

A kind of method utilizing Mierocrystalline cellulose rapid deep zone fermentative production acetic acid

  • CN 102,703,531 B
  • Filed: 05/21/2012
  • Issued: 08/12/2015
  • Est. Priority Date: 05/21/2012
  • Status: Active Grant
First Claim
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1. utilize a method for Mierocrystalline cellulose rapid deep zone fermentative production acetic acid, it is characterized in that the method is carried out as follows:

  • A. industrial wood sugar raw slag material or stalk or wheat straw are added steam explosion machine, under 2 ~ 3Mpa condition, pre-treatment 90 ~ 150s;

    Described industrial wood sugar raw slag material is xylose residue, furfural dregs, xylooligosaccharides production residue;

    B. the pretreated industrial wood sugar raw slag material of a step or stalk or wheat straw is got according to raw material or stalk or wheat straw;

    water=1;

    1 ~ 10 weight adds water and enters paste mill grinding, controlling defibrination weight concentration is 10 ~ 20%, defibrination granularity is 40 ~ 80 orders, then insert in saccharifying tank, it is 45 ~ 60 DEG C in temperature, pH value is under 4 ~ 6 conditions, by 500 ~ 1500 units/g industry wood sugar raw slag material or stalk or wheat straw amount proportioning extracting cellulose enzyme, divide and add for 2-4 time, interval time is 6 ~ 10 hours, enzymolysis 20 ~ 28h, and then after filtration, membrane concentration to solid substance weight concentration is the saccharified liquid of 15 ~ 20%,C. in the saccharified liquid of b step, add active dry yeast according to saccharified liquid weight 0.1 ~ 1% proportioning to ferment, controlling leavening temperature is 30 ~ 45 DEG C, front 8h ventilation, cultivate after 24h when alcoholic strength adds acetic bacteria 0.5 ~ 2% time, ferment, temperature controls at 30 ~ 45 DEG C simultaneously, and control fermentation time is 48 ~ 60h, then send distillation tower to distill fermented liquid, obtain product.

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