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Effect of Different Nitrogen Sources on Ethanolic Fermentation of Glucose by Zymomonas mobilίs

IR@CSIR-CFTRI

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Relation http://ir.cftri.com/1592/
JFST-11-95
 
Title Effect of Different Nitrogen Sources on Ethanolic
Fermentation of Glucose by Zymomonas mobilίs
 
Creator Sreekumar, O.
Basappa, S. C.
 
Subject 04 Fermentation Technology
 
Description Among several organic and inorganic nitrogen sources tried, urea (0.5 g/1) was found to be better especially than ammonium sulphate, which is generally used in defined medium for ethanol production by Zymomonas mobilis. Calcium pantothenate has been found to be an essential vitamin for ethanol production. Addition of yeast extract as a source of both nitrogen and vitamins, rather
than peptone, was effective for obtaining enhanced yield of ethanol, particularly in high glucose (200-300 g/1) fermentation. A final pH of 4.1 to 4.4 in case of urea, as compared to that of 3.3 to 3.9 with the use of ammonium sulphate, appears to contribute to enhanced ethanol production, as the bacterium is intolerant to lower pH.
 
Date 1995
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://ir.cftri.com/1592/1/JFST1995_32%283%29_252-254.pdf
Sreekumar, O. and Basappa, S. C. (1995) Effect of Different Nitrogen Sources on Ethanolic Fermentation of Glucose by Zymomonas mobilίs. Journal of Food Science and Technology, 32 (3). pp. 252-254.