Method for fermenting butanol and co-producing dietary fiber by corn bran

Abstract

The invention relates to the field of biological energy, and in particular relates to a method for fermenting butanol and co-producing dietary fiber by corn bran, which comprises the following concrete steps of: 1) pre-processing; 2) enzymatically hydrolyzing; 3) implementing solid-liquid separation, to obtain dietary fiber and enzymatic hydrolysate; 4) detoxifying the enzymatic hydrolysate; 5) refilling a nitrogen source into the detoxified enzymatic hydrolysate to prepare a fermenting culture medium; fermenting and breeding butanol by the sterilized fermenting culture medium under an anaerobic condition to produce a strain, so as to obtain a fermented product; and 6) rectifying the fermented product and collecting the butanol. According to the method for fermenting the butanol and co-producing the dietary fiber by the corn bran, measures are adjusted to local conditions, and the corn bran which is a byproduct of processing the corn is adopted as a raw material to ferment the butanol, so not only the waste is utilized to bring about benefit for environmental protection but the product additional value is improved for deep processing of the corn; and a way of improving the economic benefit is provided for the enterprises.

Description

technical field

[0001] The invention relates to the field of bioenergy, in particular to a method for producing butanol and co-producing dietary fiber by fermenting corn hulls. Background technique

[0002] Butanol is an important C4 platform compound, mainly used in the synthesis of n-butyl phthalate, butyl phosphate, butyl acrylate and butyl acetate, etc. It can also be used as an extraction solvent for oils, medicines and spices and Alkyd resin additives and other fields. With the diversified development of biomass energy, butanol is considered to be one of the most promising new liquid fuels because of its high energy density, low hydrophilicity, low vapor pressure, and high octane number.

[0003] The traditional fermentation method to produce butanol uses grain raw materials (such as corn, wheat, etc.) The market competitiveness of alcohol products has restricted the promotion and use of bio-butanol as fuel, and is also contrary to my country's food security strategy....

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