000			032100000a22003250004500
003			EG-GICUC
005			20250223032427.0
008			070319s2007 ua h f m 000 0 eng d
040			_aEG-GICUC _beng _cEG-GICUC
041	0		_aEng
049			_aDeposite
097			_aM.Sc
099			_aCai01.12.10.M.Sc.2007.Ah.p
100	0		_aAhmed Melegi Abd El ghany Melegi
245	1	0	_aPlant extracts as effective compounds in insect control / _cAhmed Melegi Abd El ghany Melegi ; Supervised Fathy Abd El gelil , Mohamed Farag Elsaid
246	1	5	_aاستخدام المستخلصات النباتية كمواد فعالة فى مكافحة الافات
260			_aCairo : _bAhmed Melegi Abd El ghany Melegi , _c2007
300			_a142P : _bFacsimiles ; _c30cm
502			_aThesis (M.Sc.) - Cairo University - Faculty Of Science - Department Of Organic Chemistry
520			_aThe presence study is focusing on the chemical constituents of mango leaves that could implicate in the resistance of local Egyptian mango (Mangifera indica) cultivar called Alphonso to scale insect infestation For comparison , the same chemical and biological investigation steps were also conducted on the highly susceptible mango cultivar (Sultani) in addition to three other susceptible mango cultivars (Zebda , Baladi and Hindi) The Acuminata scale insect , Kilifia acuminata (Signoret) nymphs were used as a bio - indicator Leaf components were extracted with solvents with different polarities , and fractionated using several column chromatographies , preparative TLC and preparative HPLC Finally , the isolated bioactive compounds were characterized and quantified with various spectroscopic methods including GC - MS , 1H - NMR , 13C - NMR , IR , and UV Six bioactive compounds were isolated , of which three were isolated from hexane extract of Alphonso leaves and were found to be moderately repellant to K acuminata ; two compounds were isolated from hexane extract of Sultani leaves and were found to be highly attractant to K acuminata and one compound was isolated from methanol extract of Alphonso leaves and was found to be toxic against K acuminata The repellant compounds isolated from Alphonso leaves were identified as ? - pinene , ? - pinene and limonene The attractant compounds extracted from Sultani leaves were identified as cis - ocimene and trans - ocimene while the toxic compounds isolated from Alphonso leaves was identified as pyrogallol The later compound has not been previously reported as a constituent of M indica species The overall results of this study suggest that the combined action of three repellant secondary metabolites , namely : ? - pinene , ? - pinene and limonene and one toxic compound , namely pyrogallol play an important role in resistance of Alphonso mango cultivar against scale insect pests in general or at least against K acuminata scale insect
530			_aIssued also as CD
653		4	_aIdentification
653		4	_aPlant extracts
700	0		_aFathy Abd El gelil , _eSupervisor
700	0		_aMohamed Farag Elsaid , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aAml _eCataloger
905			_aEsam _eRevisor
942			_2ddc _cTH
999			_c74844 _d74844