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The study of bacterial growth on highand low-density polyethylene modified with AlhagiGraecorum | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 15, Issue 2, 2015, Pages 24-29 PDF (0 K) | ||
| Author | ||
| Hamed A. Hamdi | ||
| Abstract | ||
| In the present study, high and low density polyethylene with 35% of polyethylene weight contents of AlhagiGraecorumfilms were investigated for their resistance to bacterial adhesion. All tested bacteriawere brought from the microbiology laboratory in college of Veterinary in Basrah University and diagnostic . The disc diffusion method was employed for this purpose. Bacterial growth on both highdensity and low-density polyethylene– AlhagiGraecorumcomposite were reported. We compared initial adhesion and surface growth of staphylococcus aureus , streptococcus pyogens, pseudomonas spp., aerugenosa, eschrishia coli and klebciala spp. A 5 mm polymer composites disc were inoculated in the 9 cm Petri dish for 24 hours and the zone of inhibition and bacterial growing were observed and recorded. After 24 hours the bacterial growing of tested bacteria were distributed all over the control agarwith surface growth on the polymeric composites films. A dense growth with much bacterial adhesion on the surface of polyethylene-AlhagiGraecorumdiscs.According to the nature of high density polyethylene surface, density ,diffuse biodegradability we found that the bacterial adhesion to LDPE is much than that of HDPE. It was found that the AlhagiGraecorumcontent have no clear inhibition against tested bacteria where this might be due to a limitation of the agar disc diffusion method. All obtained results of bacterial growth were explained in term of physicochemical properties of the microbial and biomaterial surfaces (AlhagiGraecorum in this case which comes from plant sources and in term of the cell wall of bacteria which is having negative electrical charge and the interaction between bacteria and other material depend on specific interactions, such as electrostatic and Lifshitz–Vander Waals forces, hydrophobic interactions and a variety of specific receptor–adhesin interactions .The differences in bacterial growing radius was obvious were the (1 -17) range in millimeter was obtained for both Escherchia coliو and Streptocouuspyogenes respectively. Finally our product can be consider friendly environmental material due to it’s biodegradability specially when buried in soil | ||
| Keywords | ||
| Polyethylene; Hi density; AlhagiGraecorum; Disc diffusion; bacteria; polymer; Email; com; Streptocouuspyogenes; Staphylcoccusaureas; spp; Klebsialla spp; pyogenes; Streptocouus; coli Escherchia | ||
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