A method for synthesizing hexanoic acid from lactic acid by microorganisms

Abstract

The invention relates to a method for synthesizing caproic acid from lactic acid by microorganisms. The method uses specific functional bacteria to biosynthesize caproic acid from lactic acid contained in culture fluid or waste water. The method uses lactic acid as an electron donor to produce caproic acid Compared with ethanol as the electron donor, the production efficiency of caproic acid is improved by more than 20%, and the toxicity tolerance concentration of the caproic acid functional bacteria of the present invention to metabolites (caproic acid) is more than 2 times higher than that of the reported caproic acid producing bacteria , has the characteristics of high conversion efficiency and strong stress resistance. Converting lactic acid, an easily available non-fuel substance, into caproic acid has high conversion efficiency and industrial applicability.

Description

technical field

[0001] The invention relates to the field of environmental bioengineering and fermentation technology, in particular to a method for producing caproic acid, in particular to a method for synthesizing caproic acid by catalyzing lactic acid with microorganisms.

[0002] technical background

[0003] Caproic acid (n-caproate) is a medium-chain fatty acid containing six carbon atoms (C 5 h 11 COOH), with strong hydrophobicity and high energy density, is an important chemical raw material that can be directly used in the production of animal feed, green antibacterial agents and corrosion inhibitors. Its ester products are widely used in food spices, resin, rubber, pharmaceutical and other industries. In addition, caproic acid is a synthetic precursor for biofuels and can be indirectly converted to biodiesel or jet fuel through organic chemical methods.

[0004] The production methods of caproic acid can be divided into chemical synthesis, extraction of natural p...

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