Continuous ethanol production from glucose and xylose by Pichia stipitis and Saccharomyces cerevisiae: using an immobilized cell reactor

2012 ◽  
Vol 29 ◽  
pp. S5
Author(s):  
Pınar Karagöz ◽  
Melek Özkan
1992 ◽  
Vol 3 (2) ◽  
pp. 71-76
Author(s):  
L.J. Boyer ◽  
J.L. Vega ◽  
R. Basu ◽  
E.C. Clausen ◽  
J.L. Gaddy

1988 ◽  
Vol 18 (1) ◽  
pp. 127-142 ◽  
Author(s):  
R. D. Waldron ◽  
J. L. Vega ◽  
E. C. Clausen ◽  
J. L. Gaddy

2004 ◽  
Vol 92 (3) ◽  
pp. 251-260 ◽  
Author(s):  
Ghasem Najafpour ◽  
Habibollah Younesi ◽  
Ku Syahidah Ku Ismail

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Ping Wan ◽  
Dongmei Zhai ◽  
Zhen Wang ◽  
Xiushan Yang ◽  
Shen Tian

Saccharomyces cerevisiae Y5 (CGMCC no. 2660) and Issatchenkia orientalis Y4 (CGMCC no. 2159) were combined individually with Pichia stipitis CBS6054 to establish the cocultures of Y5 + CBS6054 and Y4 + CBS6054. The coculture Y5 + CBS6054 effectively metabolized furfural and HMF and converted xylose and glucose mixture to ethanol with ethanol concentration of 16.6 g/L and ethanol yield of 0.46 g ethanol/g sugar, corresponding to 91.2% of the maximal theoretical value in synthetic medium. Accordingly, the nondetoxified dilute-acid hydrolysate was used to produce ethanol by co-culture Y5 + CBS6054. The co-culture consumed glucose along with furfural and HMF completely in 12 h, and all xylose within 96 h, resulting in a final ethanol concentration of 27.4 g/L and ethanol yield of 0.43 g ethanol/g sugar, corresponding to 85.1% of the maximal theoretical value. The results indicated that the co-culture of Y5 + CBS6054 was a satisfying combination for ethanol production from non-detoxified dilute-acid lignocellulosic hydrolysates. This co-culture showed a promising prospect for industrial application.


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