The former and classical DNA extraction by the mixture phenol-chloroforme should allow to harvest purified nucleic acids. If it is not workong try to break cells by glass beads after a brief heating at 70°C to inactivate DNAse.
Hi Nehzat. you could get rid of Polysaccharide using CTAB and SDS. if you need complete elimination of inhibitors such as protein, dont forget using PVP and Beta-mercaptoetanol.