|
KMID : 0545119920020020108
|
|
Journal of Microbiology and Biotechnology
1992 Volume.2 No. 2 p.108 ~ p.114
|
|
|
Ethanol Fermentation in Lactose Medium Using a Fusant Strain of Saccharomyces cerevisiae and Kluyveromyces fragilis
|
|
LEE, CHU HEE
YANG, SUN A/RHO, JU WON/LEE, SEUNG TU[/NAM, DOO HYUN
|
|
|
Abstract
|
|
|
|
The fermentative characteristics in ethanol production from lactose, with increased ethanol tolerance, of a fusant yeast strain constructed by protoplast fusion of Saccharomyces cerevisiae and Kluyveromyces fragilis were studied. The ethanol tolerance of this strain was increased to 8.0%, compared with the parent K. fragills. During batch ethanol fermentation the optimal cultivation conditions for this fusant yeast were an initial pH of 4.5, a culture temperature 30℃, stirring at 100rpm without aeration in 10% lactose medium (supplied with 1.0% yeast extract). Using this fusant strain in whey fermentation to ethanol, maximum ethanol production reached 3.41% (w/v) (theoretical yield; 66.7%) after a 48 hour cultivation period.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|
|