Abstract:

To further improve the conversion rate of fermenting ethanol with energy beet,three fungicides were tested into fermentation substrate .The results showed that the fermentation effect after using beaching powder,methanal and sodium pentachlorophenol respectively was better than CK.And the sterilization effect of level 2 in three fungicides was the best.The order of fermentation effect was sodium pentachlorophenol> methanal> beaching powder.So the sterilization method was using 0.004% sodium pentachlorophenol in 50?C treatment half an hour.The pH value range order after fermenting was as follow:CK> methanal> sodium pentachlorophenol> beaching powder.But according to the conversion rate of ethanol, sodium pentachlorophenol was determined as fungicide.