000 03329cam a2200349 a 4500
003 EG-GiCUC
005 20250223031655.0
008 170228s2016 ua h f m 000 0 eng d
040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aM.Sc
099 _aCai01.12.05.M.Sc.2016.He.B
100 0 _aHeba Shawky Mostafa Hassanien
245 1 0 _aBiochemical and morphological responses of some fungi to gamma and microwave irradiation /
_cHeba Shawky Mostafa Hassanien ; Supervised Esmat Elwy Aly Elwy , Mohamed Abdelfatah Aboelseoud , Neveen Mahmoud Khalil
246 1 5 _aا{uئإئآ}{uئإآ٣}{uئإ٩٨}{uئإء٠}{uئإ٨إ}{uئإ٩١}{uئإ٨إ}ت ا{uئإؤئ}{uئإ٩٢}{uئآئئ}{uئإإإ}{uئإؤآ}{uئآئئ}{uئإإ٤}{uئآئئ}{uئإ٨إ}{uئإ٨آ}{uئآئئ}{uئإ٩٤} و ا{uئإؤئ}{uئإإ٤}{uئإإإ}ر{uئإؤ٣}{uئإإإ}{uئإؤئ}{uئإإإ}{uئإ٩ئ}{uئآئئ}{uئإ٩٤} {uئإؤئ}{uئإ٩٢}{uئإأأ}{uئإآإ} ا{uئإؤئ}{uئإؤ٤}{uئإأ٤}{uئإءإ}{uئآئإ}{uئإ٨إ}ت ا{uئإؤئ}{uئإإ٤}{uئإ٩٨}{uئإأأ}{uئإءإ}{uئإآئ}{uئإ٩٤} {uئإئ٧}{uئإآ٧}{uئإأأ}{uئإ٩٤} ا{uئإؤئ}{uئإء٠}{uئإ٨إ}{uئإإ٣}{uئإ٨إ} و ا{uئإؤئ}{uئإإ٤}{uئآئئ}{uئإؤأ}{uئإءإ}وو{uئآئإ}{uئإؤ٢}
260 _aCairo :
_bHeba Shawky Mostafa Hassanien ,
_c2016
300 _a134 P. :
_bfacsimiles ;
_c25cm
502 _aThesis (M.Sc.) - Cairo University - Faculty of Science - Department of Botany Microbiology
520 _aThis study was aimed at investigating the impact of microwave heating and gamma radiation effect on some fungi isolated from different food stuffs. The study included phenotypic, biochemical and molecular studies. Fifty six fungal isolates were obtained and identified. The most common fungi belong to two main genera, aspergillus and penicillium. The identified fungal species were treated with microwave radiation at two different power levels (540 and 720 W) for different exposure times started from 10 to 180 s. Gamma irradiation was applied on the fungal species, the irradiation was carried out at doses of (0.1, 0.2, 0.3, 0.4, 0.5, 1, 2, 3 and 5 kGy), at dose rate of 1.1 kGy/h. Aspergillus niger was selected to be the studied fungal species as it showed a morphological changes after irradiation. Three phenotypically different mutants were obtained and purified on Czapeck Dox{u2019}s agar media. A mutant M1 was isolated after microwave irradiation at 720 W for 120 s, while two mutants M2 and M3 were isolated after gamma irradiation at doses of 1 and 3 kGy, respectively. SEM micrographs showed clear morphological changes in conidiophores, conidial heads and conidia among all strains. The studied ultrastructure by TEM microscope illustrated occurrence of slight damage to the obtained mutants in comparison with the parent strain
530 _aIssued also as CD
653 4 _aGamma radiation
653 4 _aMicrowave radiation
653 4 _aMutagenesis
700 0 _aEsmat Elwy Aly Elwy ,
_eSupervisor
700 0 _aMohamed Abdelfatah Abo Elseoud ,
_eSupervisor
700 0 _aNeveen Mahmoud Khalil ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aSamia
_eCataloger
942 _2ddc
_cTH
999 _c60020
_d60020