Energetics of Microbacterium thermosphactum in glucose-limited continuous culture.
Microbacterium thermosphactum was grown at 25 degrees C in glucose-limited continuous culture under aerobic (greater than 120 microM oxygen) and anaerobic (less than 0.2 microM oxygen) conditions. The end products of the anaerobic metabolism of glucose were identified as L-lactate and ethanol. Together these compounds accounted for between 85 and 90% of the glucose utilized over the full range of growth rates studied. In addition, 4% of the glucose utilized was incorporated into cellular material. Under anaerobic conditions the molar growth yield was 40 g (dry weight) of cells per mol of glucose utilized, and the maintenance energy coefficient was 0.4 mmol of glucose utilized per g (dry weight) of cells per h. For cells grown under aerobic conditions in the corresponding values were 73 g/mol and 0.2 mmol/g per h, respectively. The molar growth yield with respect to adenosine 5'-triphosphate varied with the growth rate of the culture, and the true molar growth yield with respect to adenosine 5'-triphosphate was found to be 20 g/mol of adenosine 5'-triphosphate.
D000192:Actinomycetales / Q000254:growth & development / Q000378:metabolism*; D000255:Adenosine Triphosphate / Q000096:biosynthesis; D000332:Aerobiosis; D000693:Anaerobiosis; D000431:Ethanol / Q000378:metabolism; D005506:Food Contamination; D005516:Food Microbiology; D005947:Glucose / Q000378:metabolism*; D007773:Lactates / Q000096:biosynthesis; D008460:Meat
D007773:Lactates; D000431:Ethanol; D000255:Adenosine Triphosphate; D005947:Glucose