C. Khoury et al., OPTIMAL DISSOLVED-OXYGEN CONCENTRATION FOR THE PRODUCTION OF CHITINASES BY SERRATIA-MARCESCENS, Biotechnology letters, 19(11), 1997, pp. 1143-1146
Chitinase production by Serratia marcescens 990E was maximal (34 U/ml)
for a dissolved oxygen concentration ranging from 20 to 50% saturatio
n. Chitin addition (6 g/l) at the end of fermentation reactivated the
growth but did not bring about further chitinase accumulation. Four ch
itinases with different isoelectric points were separated.