Process for producing vanillic acid and vanillic aldehyde by fermentation transforming bran foots

Abstract

The present invention provides a method capable of using wastes (oil foot) produced in the course of processing rice husk oil as raw material and utilizing microbial fermentation conversion process to produce vanillic acid and vanillic aldehyde. Said method is characterized by that it utilizes Aspergillus niger CGMCC 0774 to hydrolyze ferulic acid ester in rice husk oil foot to produce ferulic acid, and convert it into vanillic acid, then utilizes another Pycnoporuscinnabarinus CGMCC 1115 to convert the vanillic acid into vanillic aldehyde.

Description

technical field

[0001] The invention relates to a method for producing vanillic acid and vanillin, in particular to a method for producing vanillic acid and vanillin through microbial fermentation and transformation using waste (soapstock) produced in the processing of rice bran oil as raw material, which belongs to biocatalysis field. Background technique

[0002] Vanillin (4-hydroxy-3-methoxybenzaldehyde), commonly known as vanillin, is the main component of vanilla (Vanilla planifolia Andreurs), which enjoys the reputation of "the king of food spices" in the world. Vanilla bean aroma and strong milk flavor, elegant and refreshing smell, is an important broad-spectrum high-end spice in the world today, and is widely used in food, beverage, tobacco, alcohol, cosmetics, medicine and chemical industries.

[0003] At present, "artificial" or semi-synthetic vanillin is mostly chemically synthesized from phenyl petrochemical raw materials such as guaiacol through the Reimer-Tie...

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