Pyrogallic acid

a widely used chemical raw material and reagent

was mostly prepared by the chemistry process of gallic acid decarboxylation. Since serious environment pollution and equipment corrosion with the above method

the article reviewed microbial strains and the related technology including mostly influence factors of yield

such as carbon sources

the concentration of substrate

pH and fermentation time from the perspective of microbial transformation. At the same time

related influence factors of the gallic acid decarboxylase (GAD) activity including pH

temperature

metal ions and additives were presented. Then

the article briefly introduced the treatment of wastewater made in the production process of gallotannin and other issues applying microorganism. Finally

some views and suggestions were put forward for the process for preparing pyrogallic acid with the new method in future

which would provide the guidance and reference for the industrial production of pyrogallic acid by microbial conversion.