The productivity of the strains in HS medium were
determined as 0.251±0.03 g L-1, 0.187±0.07 g L-1 and 0.263
±0.02 g L-1 for the isolates AS6, AS7, and AS14,
respectively. Nguyen et al. [27] have reported 0.28±0.01 g
L-1 cellulose production with a Gluconacetobacter xylinus
strain isolated from Kombucha culture. Also, Park et al. [9]
have reported 0.35 g L-1 cellulose production on the fourth
day of incubation by a Gluconacetobacter hansenii strain
isolated from rotten apple. As shown, the productivity of
strains AS6, AS7 and AS14 are quite similar to the values
reported in literature for Gluconacetobacter xylinus and
Gluconacetobacter hansenii strains. Yet, one can improve
the yield by manipulating the initial pH [15], changing the
carbon or nitrogen source [27] or by improving cultivation
conditions [17].