抄録
Studies on l-sorbose production by submerged growth of gluconoacetobacter roseus nov. sp. in a small rotary drum fermenter revealed the following:
(1) d-Sorbitol, in concentration up to 30 %, was oxidized perfectly in 48 hours.
(2) Quantities of sorbitol medium should be 25 to 30 percent to the whole quantity of the fermenter; the less sorbitol medium was used, the better was the result.
(3) Quantities of inoculum could be lowered to 3% of the main nutrient solution.
(4) Qualities of sorbitol gave main influences upon fermentation.
(5) Concentrat on of nitrogenous nutrient (extract of fish-meaty) could be lowered to 0.2%, but when concentrated sorbitol medium was used, the concentration of 0.4_??_0.6% was desirable.
(6) Conditions of air flow, air pressure, rate of rotation according to WELLS et al. were employed also in these studies almost succesfully.
(7) Remedies for, eventual stoppage of electric current were studied. Several experiments in a large rotary fermenter revealed the same results to those in a small fermenter.
