000			03116cam a2200349 a 4500
003			EG-GiCUC
005			20250223031644.0
008			170131s2016 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.07.06.M.Sc.2016.Ah.B
100	0		_aAhmed Abdelmonem Abdallah
245	1	0	_aBioconversion of Rice Straw to Ethanol / _cAhmed Abdelmonem Abdallah ; Supervised Olfat Sayed Barakat , Mona Hussein Badawi , Mohamed Alla Eldin Ahmed Demerdash
246	1	5	_aالتحول الحيوى لقش الأرز إلى إيثانول
260			_aCairo : _bAhmed Abdelmonem Abdallah , _c2016
300			_a109 P. : _bcharts , facsimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Agriculture - Department of Microbiology
520			_a Egypt faces a high population growth rate nowadays, which demands for an increase in agricultural production efficiency. Consequently, agricultural field residues will increase. Rice straw is one of the main agriculture residues in Egypt. So this study was performed on rice straw as a resource for production of bioethanol. In a series of laboratory experiments, rice straw was pretreated with sodium hydroxide followed by biological treatments for bioethanol production. Both Aspergillus niger NRRL-3 and Trichoderma reesei NRRL-11460 were successfully grown on either cellulose, hemicellulose or holocellulose, byproducts of rice straw hydrolysis. Appreciable amounts of some extracellular enzymes were produced in these very special cultivating media. Among tested enzymes, xylanase was produced in the highest quantity (40.54 IU ml-1), while carboxymethyl cellulase ranked second (3.35 IU ml-1). Holocellulose seemed the pioneer byproduct supporting the enzyme production followed by cellulose, while hemicellulose was the inferior in this respect. Apart from substrate and enzyme type, the fungus T. ressei overcame A. niger for the enzyme formation. The enzymatic activity of introduced inocula obviously reflected on producing sugar pools. Compared to others, T. reesei acted more actively, where the produced reducing sugars could be arranged in the descending order: 2.62 mg ml-1 (T. ressei) > 2.52 mg ml-1 (A. niger + T. ressei) > 1.10 mg ml-1(A. niger).The optimal level of reducing sugars was scored at 8th day-interval in hollocellulose -amended fungal culture medium, the respective quantities of 22.90, 20.30 and 13.22 were produced in the presence of T. reesei, mixed inoculum and A. niger. Raising the ammonium sulphate over the recommended level in fungal culture medium significantly stimulated sugar production
530			_aIssued also as CD
653		4	_aAspergillus niger
653		4	_aRice straw
653		4	_aTrichoderma reesei
700	0		_aMohamed Alla Eldin Ahmed Demerdash , _eSupervisor
700	0		_aMona Hussein Badawi , _eSupervisor
700	0		_aOlfat Sayed Barakat , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aEnas _eCataloger
905			_aNazla _eRevisor
942			_2ddc _cTH
999			_c59636 _d59636