earticle

영어

Many bacterial species are known to produce an extracellular heteroor homopolysaccharides, which are attached to the bacterial cell or secreted into the environment. Microbial saccharides produced by bacteria have potential applications in stabilizing, in increasing the viscosity, in promoting adhesion and water retention properties. Gluconacetobacter hansenii PJK are cellulose producing strains which also produce water soluble oligosaccharides (WSOS) as a by- product. Agar plates were used to study the effect of agar surface in the production of WSOS along with BC. It was found that by using the flasks coated with agar plates, not only the BC production was increased but the production of WSOS was also sufficiently increased
compared to the control. The experiments were carried out in both day wise and batch wise manners. Initially, the production of WSOS was almost double in the reactors containing the agar plates compared to the control in day wise as well as in the batch wise experiments. However, the production was decreased with successive batches. The results revealed that besides providing surface effect the agar itself played an active role in the production of WSOS.