Microbial biomass production and evaluation
Thesis/Dissertation
·
OSTI ID:6500657
A study of microbial biomass production was conducted to determine the amount that certain microorganisms can produce. The microorganisms, grown in their optimum conditions, were put into media containing 1% (w/v) corn starch. Those that yielded the greatest quantity of biomass were then utilized in corn meal fermentation. Their effect upon the protein nutritional value of the product was also determined. A comparative study was then carried out to determine the amylolytic activity, and biomass produced by single and mixed cultures of microorganisms including Bacillus sterothermophilus, Endomycopsis fibuligera, Saccharomyces diastaticus, and Candida utilis. In bacteria-yeast fermentation, the highest biomass (4.3 mg/ml) was obtained from C. utilis following B. sterothermophilus. In another fermentation process, yeast-yeast, the highest biomass (6.73 mg/ml) was obtained from a mixed culture of E. fibuligera and C. utilis. In both groups of microorganisms, the level of crude protein, crude fiber, percent relative nutritive value (%RNV) and total available amino acids of lysine, methionine and tryptophan increased. The increase made by the mixed cultures of yeast was superior and was the only treatment that showed a significant (P > 0.05) difference from the non-fermented control and from other treatments.
- Research Organization:
- Missouri Univ., Columbia (USA)
- OSTI ID:
- 6500657
- Country of Publication:
- United States
- Language:
- English
Similar Records
Continuous fermentation of Saccharomycopsis fibuligera and Candida utilis
Two-stage continuous fermentation of Saccharomycopsis fibuligera and Candida utilis
Fermented ammoniated condensed whey as a crude protein source for feedlot cattle
Journal Article
·
Fri Nov 30 23:00:00 EST 1984
· Biotechnol. Bioeng.; (United States)
·
OSTI ID:5549873
Two-stage continuous fermentation of Saccharomycopsis fibuligera and Candida utilis
Journal Article
·
Mon Oct 31 23:00:00 EST 1983
· Biotechnol. Bioeng.; (United States)
·
OSTI ID:6680449
Fermented ammoniated condensed whey as a crude protein source for feedlot cattle
Journal Article
·
Tue Mar 31 23:00:00 EST 1981
· J. Anim. Sci.; (United States)
·
OSTI ID:5094944