Assessment of Some Potential Plastic Degrading Microbes in Katsina, North Western Nigeria
DOI:
https://doi.org/10.47430/ujmr.1942.016Keywords:
Bacteria,, Fungi,, Soil,, Plastic,, Polythene bag,, Physico-chemical.Abstract
Microorganisms play a significant role in biological decomposition of materials, including synthetic polymers in natural environments. This research was aimed to asses some potential plastic degrading microbes in Katsina. Soil samples from four different locations of about 15,000 meters apart were used for this study. Portions of the soil samples were dried, ground and sieved through a 2mm sieve for Physico-chemical characterization. The soil temperature range from 26.30c to 29.60c, pH 5.67 to 6.26, % Nitrate 0.54 to 0.97, % Phosphates 2.03 to 3.83, % organic carbon 1.71 to 3.27, % organic matter 1.97 to 9.43 and % moisture content 7.13 to 16.22. Isolation and the enumeration of bacteria and fungi was done using nutrient agar and potato dextrose agar respectively. The total populations of bacteria ranged from 1.69 x 105 to 2.94 x 105 CFU/g in the soil while the fungi range from 1.60 x 104 to 8.35 x 104 CFU/g in the soil. The capability of microbial isolates to biodegrade ground polyethylene bags and plastic bottles was tested weekly. Microbes identified include Staphylococcus aureus, Streptococcus lactis, Bacillus subtilis, Diplococcus sp. and Pseudomonas sp. Eight degrading fungal species identified following fungal colony and color include Alternaria alternate, Aspergillus niger, Aspergillus flavus, Aspergillus ornatus, Aspergillus candidus, Aspergillus nidulans, Aspergillus terreus and Rhizopus stolonifera. It can be concluded that the soil around Kofar Sauri, Kofar Marusa, Kofar Guga and Kofar Kaura of Katsina metropolis contains some plastic degrading microbial species. Hence, further investigation using GC-MS to analyze the microbial enzymes or organic acids in degradation of the polythene and plastics in eco-friendly way is recommended.
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