Abstract

ISOLATION AND IDENTIFICATION OF BACTERIA FROM DIFFERENT WATER SAMPLES OF BANKUR DISTRICT OF WEST BENGAL

Subir Samanta*

Abstract

Water has curious and unusual properties, and plays an important role in living systems. Thus, “no life without water” is common saying. It is a master solvent and all metabolic reaction of the living organism depends on the presence of water. Water gets contaminated with pathogenic micro-organisms through intestinal discharges of man and animal. The characteristics group of intestinal bacteria are the coliforms are defines as facultative anaerobic Gram-negative, non-sporing, rod-shaped bacteria that ferment lactose with gas formation within 48 hours at 35ºc, coli forms are the members of the family Enterobacteriaceae which includes E.coli, Enterobacter aerogenes, Salmonella and Klebsiella pneumoniae. During present investigation different water sample of Bankura district were collected of West Bengal state. Present work has been carried out to screen the Bacteria of water bodies of Bankura district and to study the characteristics of micro-organisms causing water pollution with regards to their staining behaviour, colony characteristic and biochemical test. The Bankura district lies in the western plateau and high lands. Two sites have been selected for study of micro-organisms and physicochemical characteristics of water. After the continued study from August 09 to April 10, altogether six strains of bacteria were observed and isolated from different water Samples, obtained during present investigation. eg:- E.coli, Staphylococcus, Streptococcus, Psuedomonas, Shigella, and Salmonella typhi Spp. etc. Some fungi species are also isolated from Water samples eg; Aspergillus spp.

Keywords: Bankura, West Bengal, Water, Salmonella, Bacteria, Enterobacter etc.