عزل و تشخيص جرثومة Serratia ficaria و تقدير إنتاجها من السكر المتعدد الخارج خلوي

Abstract EN

The study involved isolation and identification of the bacterium Serratia ficaria from the soil, and the effect of incubation period, different carbon and nitrogen sources on ability of the isolate to produce extracellular polysaccharide was investigatal.

The highest production of polysaccharide (2.55 g / L) was obtained after (5) days of incubation.

Maximum and lowest production of polysaccharide was achieved when glucose and sodium nitrate was (2.57 and 2.91 g / l), lactose and sodium nitrite (0.72 and 0.93 g / L) as a carbon and nitrogen source respectively.