미생물 다당류중 viscosifier를 생산하는 세균을 분리하고 그 특성을 조사하였다. 본 세균은 Enterobacter agglomerans로 동정되었으며, 다당류 생산을 위한 조건은 glucose 25 g/ι, peptone 2.0 g/$ell$, yeast extract 0.5 g/$ell$, KH$_2$PO$_4$1g/$ell$, MgSO$_4$.7$H_2O$ 1g/$ell$, CaCO$_3$2.5g/$ell$, 3$0^{circ}C$ pH 5.7이며 이 조건에서의 생산량은 8.41g/L 이었다. 본 다당류의 성분은 갈락토오스(1.0몰), 크실로오스(1.5몰), 글루코 노델타락톤(1.9몰) 및 리보오스(0.03몰)로 되어 있었다. 1% 용액의 점도는 60rpm에서 504mpa.s이며 고유 점도는 45.8 d$ell$/g 이었다
A bacterial isolate FRI-33 which produces hydrophillic polysaccharide was identified and its cultural condition was investigated. FRI-33 was identified as Enterobacter agglomerans. The optimum cultural conditions for polysaccharide production were 3$0^{circ}C$, pH 5.7, using medium composed of glucose 25 g/$ell$, peptone 2.0 g/$ell$, yeast extract 0.5 g/$ell$, KH$_2$PO$_4$ 1.0g/$ell$, MgSO$_4$.7H$_2$ O 1.0g/$ell$, CaCO$_3$ 2.5g/$ell$. The polysaccharide production after 72 hours was 8.41 g/$ell$. The polysaccharide was composed of galactose (1.0 mole), xylose (1.5 mole), gluconodeltalactone (1.9 mole) and ribose (0.03 mole). The apparent viscosity of 1% polysaccharide solution was 504 mPa.s at 60 rpm and intrinsic viscosity was 45.80 d$ell$/ g.
