Abstract
Polythene-degradation products (PE-DPs) produced due to two most efficient polythene degrading fungal isolates (Aspergillus terreus strain MANF1/WL and Aspergillus sydowii strain PNPF15/TS) after 60 days of incubation at ambient temperature with continuous shaking were analyzed by employing GC-MS method. Total 24 PE-DPs were recorded in total 4 samples i) control (pH 3.5), ii) Treatment of Aspergillus terreus strain MANF1/WL (pH 3.5), iii) control (pH 9.5) and iv) Treatment of Aspergillus sydowii strain PNP15/TS (pH 9.5). To check the deleterious status of PE-DPs using both the elite fungal isolates at in vitro level, two living systems (Sorghum and Tiger shark) were used. The percent germination rate of sorghum seeds were found unaffected with PE-DPs of both elite fungi. PE-DPs of both the fungal isolates exhibited maximum germination index at 50%. Whereas, highest elongation inhibition rate (34.75 ± 7.10) was reported with PE-DPs of Aspergillus terreus strain MANF1/WL. In case of animals system, no mortality of the Tiger sharks was documented after fifteen days of the treatment.
Highlights
Based on various beneficial properties, plastic is one of the widely used polymers throughout the world, Due to its luxuriant usage, billion tons of plastic waste is being generated into the environment annually[1,2]
Investigation of polythene-degradation products (PE-DPs) formed by the fungal isolates using GC-MS analysis
The by-products of polythene strips produced by the two elite fungi isolates (Aspergillus terreus strain MANF1/WL and Aspergillus sydowii strain PNPF15/TS) growing in Sabouraud dextrose broth with continuous shaking at ambient temperature were documented using GC-MS analysis
Summary
Based on various beneficial properties, plastic is one of the widely used polymers throughout the world, Due to its luxuriant usage, billion tons of plastic waste is being generated into the environment annually[1,2]. Most of the plastic waste reaches to the marine environment and leads to the death of billions of marine animals due to intestinal blockage, and their entanglement with the plastic[4]. The plastic gets degraded under natural condition with very slow speed and took few hundred years to mineralize. To tackle with this emerging issue of the plastic waste management, various researchers around the globe tried to degrade the plastic with various methods[1,2] and reported biodegradation as the most safe, widely accepted and environment friendly method[5]. In order to understands the deleterious nature of by-products produced due to action of these fungal isolates, firstly we tried to identify the polythene degraded by-products by employing GC-MS tool, followed by assessing their deleterious potential effects on Sorghum (plant system) and tiger shark (animal system) at in vitro level
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