Utilization of carbohydrates by Thermomonospora sp. Grown on glucose, cellobiose, and cellulose

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260230612· OSTI ID:5209632

Moreira, A R; Phillips, J A; Humphrey, A E

Thermomonospora was grown on glucose, cellobiose, and cellulose in order to study its growth characteristics with different carbohydrate substrates and to assess the validity of some of the assumptions made in a previously proposed model for the cellulose fermentation with this microorganism. The N and protein contents of the cells are essentially constant during the fermentation and independent of the C source when glucose or cellobiose are utilized. Under O starvation conditions it was shown that unidentifiable organic compound(s) accumulate(s) in the culture broth. Culture fluorescence was an excellent variable for monitoring and control of the fermentation process. This microorganism showed a preference for crystalline cellulose (Avicel) as substrate although it grows readily on a more amorphous cellulose (Solka Floc). The production of extracellular protein is growth related. Data were obtained confirming the decrease in the number of active adsorption sites as the cause for the decrease in the cellulose digestion rate.

• Research Organization: Dept. Chem. Eng., Univ. Pennsylvania, Philadelphia, PA 19104 USA
• OSTI ID: 5209632
• Journal Information: Biotechnol. Bioeng.; (United States), Journal Name: Biotechnol. Bioeng.; (United States) Vol. 23:6; ISSN BIBIA
• Country of Publication: United States
• Language: English

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59 BASIC BIOLOGICAL SCIENCES
ALDEHYDES
BIOCONVERSION
CARBOHYDRATES
CELLOBIOSE
CELLULOSE
CHEMICAL REACTIONS
DECOMPOSITION
DISACCHARIDES
ENZYMATIC HYDROLYSIS
FERMENTATION
FUNGI
GLUCOSE
GROWTH
HEXOSES
HYDROLYSIS
LYSIS
METABOLISM
MONOSACCHARIDES
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
PLANTS
POLYSACCHARIDES
PROTEINS
SACCHARIDES
SOLVOLYSIS
SUBSTRATES