Isolation of Polyvinyl Alcohol Degrading Fungi and Improvement of Degradation Activity | ||||
| Egyptian Journal of Microbiology | ||||
| Volume 57, Issue 1, 2022, Page 1-14 PDF (2.92 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejm.2022.111898.1203 | ||||
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| Authors | ||||
Metwally A. Metwally; Mohamed Y. Bedaiwy; Noha A. El-Sebaii; Anwer S.M. El-Badry 
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| Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, Egypt. | ||||
| Abstract | ||||
| IN THE PRESENT study, thirty-one isolates were collected from different locations in Tanta city, Gharbia Governorate, Egypt. These isolates were screened for their polyvinyl alcohol (PVA) - degrading ability as a sole carbon source in the culture medium. Among the thirty-one tested isolates, only Seventeen were found PVA degraders belonging to genera Penicillium, Aspergillus, Trichoderma, Fusarium and Ulocladium. The highest degradation percentages were recorded for Penicillium polonicum ON024147 (25.7%) and Aspergillus niger ON012795 (24.28%). The culture conditions were optimized for maximum PVA-degradation of 88% and 90% by P. polonicum and A. niger, respectively. The optimum static culture conditions for P. polonicum were adjusted at pH 5 and incubation at 30°C for 6 days in the presence of starch as a co-carbon source and KNO3 as a nitrogen source with PVA conc. 10g/L. For A. niger, the optimum growth conditions were at pH=6, 30°C, static culture, for 6 days, cellulose as a co-carbon source, sodium nitrate as a nitrogen source and PVA conc.= 10g/L. | ||||
| Keywords | ||||
| Aspergillus niger; Degradation; Fungi; Hydrolysis; Penicillium polonicum; PVA | ||||
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