Heavy Metals and Antibiotics Resistance of Halophilic Bacteria Isolated from Different Areas in Red Sea, Egypt.
AbdelRahim, Khalid . 2014
Hundred and thirty eight (138) bacteria were isolated from 3 different areas on Red Sea governorate, Egypt. Among these
138 moderately halophilic isolates, 2.17%, 3.6%, 6.5%, 9.4%, and 7.2% of the isolates were resistant up to 5mM Cd
2+ and Zn 2+ , 20 mM for Cu 2+ , Pb 2+ , and Co 2+ , respectively. The majority of halophilic bacterial isolates showed resistance to more than 10 mM to these metals except Cd 2+ . All strains were resistant to lead, whereas 50% only of the strains were resistant to cadmium. The resistance to (Cd2+ + Cu2+); (Zn2+ + Cu 2+) showed the highest values between bacteria (6.5%), whereas 4.34% of the isolated strains were resistant to (Cd 2+ , Zn2+) and (Zn 2+ + Pb 2+),
but 2.17% of the isolates were resistant to 3 metals (Cd 2+ , Zn 2+ ,Cu2+); (Zn2+, Cu 2+ , Co2); (Cu2+ , Co2+ , Pb2+
) and resistant to 4 metals (Zn2+ , Cu2+ , Co2+ , Pb 2+); (Cd 2+ , Zn 2+ Cu 2+ , Co 2); (Cd2 ,Zn2+ , Cu2+ , Pb2+); (Zn 2+
, Pb 2+ ,Cu 2+ , Co 2 ). No bacterial isolates were resistant to the 5 metals combined. The isolated halophilic bacteria exhibited sharp peaks of resistance to drugs such as: Velosef 95%, Cceftriaxone, 91.66%, Ampicillin 83.33
%, Nitrofurantion 81.66%, Tarivid 80%, Cephalothin 73.33%, Cephalexin 66.66%, Cefadroxil 83. 33%, and Flucloxacillin 85% whereas few isolates (6.6%) were resistant to Vancomycin.
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Water quality assessment of River Nile has been studied in the Upper Egypt region between April 2011 and March 2012 to detect the correlation between physicochemical parameters and…
Hundred and thirty eight (138) bacteria were isolated from 3 different areas on Red Sea governorate, Egypt. Among these
138 moderately halophilic isolates, 2.17%, 3.6%, 6.5%, 9.4…