Asma Safdar — новинки

Tanning industry is very important for exporting leather in Pakistan. Kasur is important for having tanneries and about 180 tanneries are working there which is now gone up to 200. About 150 tons of solid tanning industrial waste and 9000 cubic meter of waste water is discharged on daily basis and cause environmental pollution as there is no appropriate industrial state for tanneries in this city. Kasur soil is generally soft alluvial. When tanning industrial wastes applied on fields under controlled conditions, the productivity of soil is found to be decreased. Tanning industrial wastes containing heavy metals incorporate into soil and absorbed by plants. When animals consume these plants, heavy metals accumulate in their bodies and cause severe health problems.

Cellulases are a group of enzymes which can effectively degrade the cellulose, thus converting into glucose units which are further fermented by Sacchromyces cervisae into ethanol. These cellulases are produced by a variety of organisms like insects, bacteria and fungi. Fungi are the most potent producers of cellulases in both submerged and solid state fermentation processes. Generaly, cllulase production from fungi is time taking process i.e. their single batch is mostly completed in six to seven days of fermentation period. To overcome this long time span an attempt was made to produce cellulase from bacterial species. The present study was carried out to isolate and identify the cellulose degrading bacteria from soil samples.