02023cam a2200253 a 4500003000900000005001700009008004100026040002800067041000800095100004300103245024300146246027700389260006200666300004400728502008900772520072800861530002201589653001501611653002001626653001501646700003501661700004001696856003301736EG-GiCUC20250223031327.0151031s2015    ua dh  f m    000 0 eng d  aEG-GiCUCbengcEG-GiCUC0 aeng0 aBasem Salah Eldin Zakaria Mohamed Reda10aBiodegradation of heterocyclic nitrogenous compounds using nano-coated bacteria and study the overexpression of carbazole biodegradation genes / cBasem Salah Eldin Zakaria Mohamed Reda ; Supervised Sherif Mourad Sherif , Seham Eltemtamy 15aالتكسير الحيوي للمواد النيتروجينية الغير متجانسة الحلقات بأستخدام البكتيريا المغلفة بالأجسام النانونية و دراسة النشاط الجيني لتكسير الكاربازول   aCairo : bBasem Salah Eldin Zakaria Mohamed Reda , c2015  a170 P. : bcharts , facsimiles ; c25cm  aThesis (M.Sc.) - Cairo University - Faculty of Science - Department of Biotechnology  aThis study suggested an effective enrichment technique for isolation of new  bacterial strains capable of degrading carbazole from two coke samples. The most efficient carbazole degrader BS1 was identified as Bacillus clausii, as  determined by 16S rDNA gene sequence analysis. BS1 was capable of  degrading 94.25% of 1000 ppm carbazole within 7d of incubation at 30{u00B0}C,  pH7 and 200 rpm. Based on five levels of factorial CCD and RSM, the optimum value of Tween 80 and yeast extract concentration for obtaining  higher CAR degradation was about 0.861% (v/v) and 0.868 g/L for BS1, respectively. The Fe O coated BS1 showed the highest degradation activity (99.18%) than those with free cells (94.25%) after 168 h        aIssued also as CD 4aEnrichment 4aIdentification  4aIsolation 0 aSeham Eltemtamy , eSupervisor0 aSherif Mourad Sherif , eSupervisor  uhttp://172.23.153.220/th.pdf