Study on Lactic Acid Bacteria in Fenjiu Daqu

The number of lactic acid bacteria in Fenjiu Daqu was counted by use of selective culture mediums.The results showed that,with the storage period increased from three months to six months,lactic acid bacteria number in Daqu did not decrease but increased slightly;the number of lactic acid bacteria reached the highest as 71.0× 108 cfu/g in Hongxinqu,then as 5.33× 108 cfu/g in Qingchaqu,and as 2.42×109 cfu/g in Houhuoqu.Fermentation type experiments indicated that only strain QR6 was heter-fermentation lactic acid bacteria,and it was further identified by 16S rDNA identification as Weissella confuse.