Compound enzyme for cane molasses fermentation as well as preparation method and application thereof

Abstract

The invention discloses a compound enzyme for cane molasses fermentation as well as a preparation method and an application thereof. The compound enzyme comprises, in parts by weight, 4-10 parts of cellulose, 3-8 parts of xylanase, 2-8 parts of beta-mannase, 3-10 parts of glucoamylase, 1-5 parts of protease, 1-3 parts of phytase and 0.5-1 part of dextranase. The preparation method comprises steps as follows: sterilizing the raw materials, then mixing the materials in proportion, and finally performing even mixing and vacuum packaging. The compound enzyme is applied to production of cane molasses fuel ethanol and is good in stability, the content of fermentation sugar can be increased by more than 8%, 20% of external nutrients can be decreased, the purity of fermenting mash is increased, the utilization rate of the raw materials is increased, and waste liquid emission and effects of waste liquids on the environment are reduced. The original molasses ethyl alcohol production technology is unchanged, and the preparation method is simple to operate.

Description

technical field [0001] The invention belongs to the technical field of biological enzymes, and in particular relates to a compound enzyme for producing fuel ethanol from sugarcane molasses, a preparation method and application thereof. Background technique [0002] Molasses is also known as waste molasses (final molasses), and molasses can be divided into molasses such as sugar cane, sugar beet, corn and sweet sorghum according to the source. Sugarcane molasses is the most important by-product produced by sugarcane sugar factories in the entire sugar-making process. It is extracted from sugarcane after being squeezed in the pressing workshop, and the mixed cane juice is flocculated and clarified. After filtration, the clear juice is evaporated and concentrated for refining. Crystallization, a brown viscous liquid with a bitter taste separated from the nectar treatment, the yield is generally about 3% of the sugarcane mass, and is often used as biofuel ethanol, yeast, feed, a...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a compound enzyme for the fermentation of sugarcane molasses, which acts on the non-fermentable enzymes in molasses, aiming at the problems of low raw material utilization rate, long fermentation time and large waste mash in the current ethanol fermentation process of sugarcane molasses. The sugar components are hydrolyzed into fermentable sugars, and the composition of the yeast nutrient solution is also improved to shorten the fermentation time, improve the utilization rate of raw materials, and the yield and quality of ethanol.

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