Levan production using mutant strains of Zymomonas mobilis in different culture conditions

Muro, Ana Carolina; Rodríguez, Emilio; Abate, Carlos M.; Siñeriz, Faustino
October 2000
Biotechnology Letters;Oct2000, Vol. 22 Issue 20, p1639
Academic Journal
Several levan hyperproducing mutants of Zymomonas mobilis strains were selected by mutagenesis with N-methyl-N-nitro-nitrosoguanidine and caffeine. Highest levan production (41 g l-1) was obtained with a mutant strain HL 29 in a culture medium containing 200 g sucrose l-1 and 0.5 g (NH4)2SO4 l-1 stored at 7 °C for 29 days. This is the first report describing the levan synthesis by Z. mobilis at 7 °C.


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