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Production of Polysaccharides and Single-Cell Protein by Some Local Isolates of Trichoderma spp.

Background and Objective: Polysaccharides and Single-cell protein are one of the best essential natural products of microorganisms, they are excreted by different microorganisms such as yeast, fungi, bacteria and algae. This study was carried out to detect the ability of four local fungal isolates of Trichoderma spp. to produce polysaccharides and Single-cell protein. Materials and Methods: Standard Czapek Dox Broth Medium was used to detect the ability of fungal isolates to produce polysaccharides and Single-cell protein, with modified the components of medium for improved production using banana peels as a source of carbon and different nitrogen sources at different concentrations and the factorial experiment was carried out using a completely randomized design Results: The highest dry weight and polysaccharides production and protein content have been achieved for the fungus T. reesei with rates of (2.15, 0.276 and 0.94) g/100 mL, respectively, in comparison with the other treatments, the use of ammonium phosphate at concentration 0.6 g L1 has given the highest dry weight and production of polysaccharides and protein content with rates of (3.75, 0.364 and 2.77) g/100 mL, respectively, also the use of banana peels extract at concentration 40 mL L1 has given the highest dry weight and production of polysaccharides and protein content with rates of (5.21, 0.539 and 3.63) g/100 mL, respectively. Conclusion: The possibility of using the local isolate of T. reesei in the production of polysaccharides and Single-cell protein using some cheap agricultural waste such as banana peels as a carbon source instead of throwing them as waste and pollutants for the environment.