The（NH4）2SO4 was taken as the inorganic nitrogen source,the B23 bacterium,a high konjac glucomannanase producing strain,was taken to conduct pilot production in 50 L of fermentor in order to study the producing conditions and pH regulation and control during commercial fermenting production and to discuss the feasibility of commercial producing konjac glucomannanase of Amorphophallus rivieri Durieu.The results showed that the best fermentation conditions were inoculum size of 6%,aeration rate of 0.8 m3/h and stirring speed of 100 r/m.Under th...
