Bio-fermentation method for preparing 1,3-propanediol

A technology of biological fermentation and propylene glycol, applied in microorganism-based methods, biochemical equipment and methods, fermentation and other directions, can solve the problems of low concentration, high cost, low fermentation level, etc., and achieve the effect of reducing production costs
CN108070622AInactive Publication Date: 2018-05-25HUNAN ER KANG PHARMA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUNAN ER KANG PHARMA
Publication Date
2018-05-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a bio-fermentation method for preparing 1,3-propanediol. The method comprises the following steps: performing aerobic and anaerobic fermentation on crude starch as a raw material in a No. 1 fermentation tank by adopting pressure-resistant yeast to obtain glycerol fermentation broth, filtering the fermentation broth, recovering thalli for next fermentation, transferring a filtrate into a No. 2 fermentation tank accommodating Klebsiella pneumoniae for anaerobic fermentation, performing flocculating, filtering, evaporating and concentrating, reduced pressure distillation and decolorization on the fermentation broth to obtain the finished product 1,3-propanediol. With application of the method, the technical level of bio-fermentation in China is greatly improved, raw materials can be used to the greatest extent, the production cost is effectively reduced, productivity of 1,3-propanediol is improved, and the method is more suitable for industrial production.
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Description

technical field

[0001] The invention belongs to the field of biochemical technology, and in particular provides a method for producing 1,3-propanediol from crude starch. Background technique

[0002] 1,3-Propanediol is a colorless transparent viscous liquid and is an important chemical raw material. It can be directly used in antifreeze, and can also be a synthetic raw material for plasticizers, detergents, preservatives and emulsifiers , Widely used in food, cosmetics and pharmaceutical industries. 1,3-Propanediol is an organic compound with bifunctional groups, which can be used as a monomer to produce polymers such as polyester, polyether, and polyurethane, and has a huge market potential. In particular, polyester (PTT) synthesized from 1,3-propanediol and terephthalic acid is an excellent polyester material with many excellent properties, such as good elasticity, stain resistance, colorability and Antistatic and biodegradability, etc., very suitable as fiber and textil...

Claims

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