Wednesday, September 24, 2008

Natural enzyme from wood


Microbial enzymes for the treatment of textile industrial effluent are more economical and environmental friendly than chemicals.Malaysia exported textiles valued at RM8.48 billion to markets of the USA,singapore,UK,Hong Kong,Combodia,Indonesia,India and Vietnam.Synthetic dyes extensively used in textiles industries are very recalcitrant against biodegradative processes.The effluents generated from these industries create major environmental pollution problems.Fungus identified as Pycnoporus cinnabarinus was isolated from local hard wood.This fungus was able to completly decolorized azo dyes namely congo red,orange11,orange G and ponceau 2R.Under low nitrogen medium,this fungus produces laccases and lignin peroxidase that decolorized azo dyes forming phenolic compounds,thereby avoiding the formation of toxic aromatic amines.High yields of lacasses ang lignin peroxidase were obtained in liquid and solid fermentation using agro-waste particularly wood dust or rice straw as carbon source at ambient temperature.

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