Biodegradation of plastics by Gleophyllum sepiarium and Pleurotusostreatus isolated from wood

摘要

Gleophyllum sepiarium and Pleurotus ostreatus isolated from trees and window woods were tested for their ability to degrade plastic granules in minimal salt medium using weight loss, C02 evolution and mycelia extension as indicators. The results revealed that P. ostreatus degraded plastic bags and plastic granules by 5% and 2%, respectively; while G. sepiarium recorded 3% and 1% degradation, respectively. The results of CO_2 evolution indicated 31.4 dm~3 and 22.4 dm~3 CO evolution in sample inoculated with P. ostreatus while 22.4 dm~3 and 17.9 dm~3 were recorded in plastic bag and plastic granules inoculated with G. sepiarium, respectively. The results of the study demonstrated the ability of P. ostreatus and G sepiarium to partially degrade plastic bags better than plastic granules.