El-Naggar et al., M. (2024). Biodegradation of Low-Density Polyethylene Plastic Using Marine Bacterial Consortium. Egyptian Journal of Aquatic Biology and Fisheries, 28(4), 1-21. doi: 10.21608/ejabf.2024.365569
Manal M. El-Naggar et al.. "Biodegradation of Low-Density Polyethylene Plastic Using Marine Bacterial Consortium". Egyptian Journal of Aquatic Biology and Fisheries, 28, 4, 2024, 1-21. doi: 10.21608/ejabf.2024.365569
El-Naggar et al., M. (2024). 'Biodegradation of Low-Density Polyethylene Plastic Using Marine Bacterial Consortium', Egyptian Journal of Aquatic Biology and Fisheries, 28(4), pp. 1-21. doi: 10.21608/ejabf.2024.365569
El-Naggar et al., M. Biodegradation of Low-Density Polyethylene Plastic Using Marine Bacterial Consortium. Egyptian Journal of Aquatic Biology and Fisheries, 2024; 28(4): 1-21. doi: 10.21608/ejabf.2024.365569
Biodegradation of Low-Density Polyethylene Plastic Using Marine Bacterial Consortium
Recently, plastic wastes are considered a main environmental problem, and many bacterial isolates were tested to biodegrade them. The low-density polyethylene (LDPE) plastic sheets were tested to be degraded by a marine bacterial consortium. The potent marine plastic degrading isolates were biochemically identified as Bacillus licheniformis, Bacillus subtilis, and Paenibacillus xylanilyticus using the BIOLOG identification system.The identification of the most potent plastic-degrading bacterium was confirmed as Bacillus licheniformis FMMA using the 16S rRNA gene sequence. This bacterial consortium was physiologically adjusted as follows: pH 7, temperature 35°C, inoculum size 4ml/ 100ml (1.0X107CFU/ ml), and an incubation period of 30 days. It led to 34.1% plastic loss of weight. The mechanical properties (maximum force and the elongation% at break) of these treated LDPE plastic sheets showed 7.49N and 112.2%, respectively, compared to that of B. licheniformis FMMA, which showed a 25.5% plastic weight loss, with maximum force and elongation% at a breakpoint of 8.9N and 114.2%, respectively. In addition, the plastic biodegradation was also estimated through a scanning electron microscopy and Fourier transform-infrared (FTIR) spectroscopy, werea great reduction in the intensity of the -CH2 peak appeared at 2900cm-1, and the disappearance of the -OH peak at 3500cm-1 was observed.
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