Composite enzyme of saccharification and nutrition dedicated to alcohol and fuel ethanol, and application

Abstract

This invention relates to a special diastatic nutritive complex zyme specially used in alcohol and fuel alcohol including the following components in weight percentage: compound cellulose: 10-20%, pectic enzyme; 3-7%, proteinase: 5-15%, debranching enzyme: 5-15%, phytase: 5-15%, beta-amylase: rest. This invention adds the said diastatic nutritive complex zyme into the being saccharificated materials at one run at the diastatic stage. This invented multizyme reagent compound recipe can replace the beta-amylase in the current technology.

Description

Technical field: [0001] The invention relates to the field of bioengineering, and belongs to food fermentation technology, in particular to a special saccharification nutrient compound enzyme for alcohol and fuel ethanol and its application. Background technique: [0002] At present, in the production process of alcohol and fuel ethanol, the liquefaction and saccharification of raw materials (corn and wheat) generally adopts a double-enzyme process, which is simple and effective. [0003] In recent years, in order to improve raw material utilization and fermentation speed, and reduce production costs, people try to add some industrial enzyme preparations and inorganic salts in the liquefaction, saccharification and fermentation sections, such as cellulase, pectinase, debranching enzyme, acid protease and Magnesium sulfate, zinc sulfate, ammonium sulfate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, etc. According to the current relevant data, due to the hi...

AI Technical Summary

Problems solved by technology

According to the current relevant data, due to the high price of enzyme preparations, it is very difficult to achieve the purpose of improving the utilization rate of raw materials by adding one or two enzymes. In the fermentation section, nutrient salts are added to speed up the fermentation speed. Although the fermentation speed is very fast, there are many bacteria in the mash, and the acidity is much higher than that without nutrient salts (about higher than that without nutrient salts). 3 points, approximately equal to 1.62 alcohol degrees, loss of about 5% of the raw materials), instead causing a waste of raw materials; single addition of protease or (and) phytase, because the enzyme preparation itself contains more acid production that is unfavorable to alcoholic fermentation Under the temperature conditions of normal fermentation of mash (32°C-38°C, pH value around 4.5), these acid-producing bacteria are easy to multiply in large numbers, resulting in a fermentation speed that is not as good as adding nutrient salts, but the acidity is comparable to adding nutrient salts

Some units also add some antibacterial drugs, such as penicillin and clarendazim, while adding enzymes, but these methods are laborious and costly, and are not favored by enterprises.