EFFECT OF ORGANIC SUBSTANCE ON THE GROWTH OF PORPHYRIDIUM CRUENTUM

The growth of P.cruentum when added organic carbon source. organic nitrogen source and group B vitamin into medium were investigated in the present work. Results showed that glucose promoted growth rate observably. When added2%(W/V)glucose into the medium, the growth rate was doubled and biomass increased 92 6%to that of control after incubated 10 days .organic nitrogen source restrained the growth or harmed to P.cruentum. Vitamin B 2 and B 12 also promoted the growth rate.