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Method for producing fuel ethanol by using potato as raw material

A technology for fuel ethanol and potato, which is applied in the directions of microorganism-based methods, biofuels, biochemical equipment and methods, etc., can solve the problems of excessive consumption of raw starch hydrolase and unreasonable processes, and achieves simple operation and expansion of raw materials. The effect of the source, the method of manufacture is simple

Inactive Publication Date: 2007-09-26
熊兴耀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, this technology has achieved some gratifying results in the research of ethanol production. There have been many articles published on the production of ethanol with raw materials such as corn, rice, wheat, and cassava. Too large, unreasonable technology and other problems, there are very few domestic and foreign companies that actually adopt this technology in industrial production
However, the production of fuel ethanol from raw potato starch, which is difficult to saccharify, has not been reported in the literature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Pulverize the potatoes and pass through a 60-mesh sieve; (2) Mix the potato flour evenly in 30°C water with a material-to-water ratio of 1:2.2, and then add composite strains (which consist of 35% Aspergillus and 15% Rhizopus , saccharomyces 50%) for fermentation, the added amount of compound strains is 1g / kg potato flour, the fermentation temperature is 30° C., and the fermentation time is 6 days to obtain a fuel ethanol fermentation liquid with an ethanol content of 11% (V / V).

Embodiment 2

[0017] (1) Pulverize the potatoes and pass through a 70-mesh sieve; (2) Evenly mix the potato flour in water at 32°C, with a material-to-water ratio of 1:2.0, and then add composite strains (which consist of 35% Aspergillus and 15% Rhizopus , saccharomyces 50%) for fermentation, the addition of compound strains is 2g / kg potato flour, and the addition of compound coenzyme (containing pectinase 35%, cellulase 35%, acid protease 30%) is 20u / g potato flour , the fermentation temperature was 32° C., the fermentation time was 5 days, and a fuel ethanol fermentation broth with an ethanol content of 13.6% (V / V) was obtained.

Embodiment 3

[0019] (1) Potatoes are crushed and passed through a 80-mesh sieve; (2) Potato flour is evenly mixed in water at 30° C., with a material-to-water ratio of 1:1.9, and then the compound strains (which consist of 35% Aspergillus and 15% Rhizopus , yeast 50%) for fermentation, the amount of compound bacteria added is 1.5g / kg potato flour, and the amount of compound coenzymes (including 35% pectinase, 35% cellulase, and 30% acid protease) added is 30u / g Potato flour, the fermentation temperature is 30° C., and the fermentation time is 5 days to obtain a fuel ethanol fermentation liquid with an ethanol content of 14.2% (V / V).

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PUM

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Abstract

The invention discloses a preparing method to flue alcohol with potato as raw material, which comprises the following steps: (1) grinding the potato; screening with sieve >=60 order; (2) mixing the potato powder into water with temperature at 30-35 deg.c evenly; setting the ratio of material and water at 1 : 1.8-2.8; adding into composite bacterial; yeasting; setting the added quantity of composite bacterial at 0.5-5g / kg of potato powder; setting the ferment temperature at 26-35 deg.c and pH value at nature; setting the ferment time at 4-8d; getting fermentation liquor of flue alcohol with content of alcohol no less than 10% (V / V).

Description

technical field [0001] The invention relates to a method for producing fuel ethanol, in particular to a method for producing fuel ethanol using potatoes as raw materials. Background technique [0002] The development of fuel ethanol industry will not only help to ensure the security of energy supply in our country and improve the ecological environment, but also broaden the field of agricultural services and open up new ways for farmers to increase their income. Therefore, the further development of the fuel ethanol industry has important practical and strategic significance for building a new system of energy security in my country and promoting the construction of a new socialist countryside. [0003] The raw material problem is the primary problem that must be solved in the development of my country's fuel ethanol industry. Due to the constraints of high cost and severe environmental pollution, the industrialization prospect of cellulosic fuel et...

Claims

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Application Information

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IPC IPC(8): C12P39/00C12P7/06C10L1/02C12R1/685C12R1/845C12R1/865
CPCY02E50/17Y02E50/10
Inventor 熊兴耀苏小军谭兴和
Owner 熊兴耀
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