Levels of water-soluble vitamins in methanogenic and non-methanogenic bacteria
The levels of seven water-soluble vitamins in Methanobacterium thermoautotropicum, Methanococcus voltae, Escherichia coli, Bacillus subtillis, Pseudomonas fluorescens, and Bacteroides thetaiotaomicron were compared by using a vitamin-requiring Leuconostoc strain. Both methanogens contained levels of folic acid and pantothenic acid which were approximately two orders of magnitude lower than levels in the nonmethanogens. Methanobacterium thermoautotrophicum contained levels of thiamine, biotin, nicotinic acid, and pyridoxine which were approximately one order of magnitude lower than levels in the nonmethanogens. The thiamine level in Methanococcus voltae was approximately one order of magnitude lower than levels in the nonmethanogens. Only the levels of riboflavin (and nicotinic acid and pyridoxine in Methanococcus voltae) were approximately equal in the methanogens and nonmethanogens. Folic acid may have been present in extracts of methanogens merely as a precursor, by-product, or hydrolysis product of methanopterin.
- Research Organization:
- Univ. of Illinois, Urbana
- OSTI ID:
- 5578771
- Journal Information:
- Appl. Environ. Microbiol.; (United States), Journal Name: Appl. Environ. Microbiol.; (United States) Vol. 45:3; ISSN AEMID
- Country of Publication:
- United States
- Language:
- English
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