000 02930cam a2200349 a 4500
003 EG-GiCUC
005 20250223031704.0
008 170319s2016 ua f m 000 0 eng d
040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aPh.D
099 _aCai01.07.09.Ph.D.2016.Fa.E
100 0 _aFaten Anwar Abdeldaim Ahmed
245 1 0 _aEffect of pesticide residues on the quality of grape and apple fruits and their processed products /
_cFaten Anwar Abdeldaim Ahmed ; Supervised Abdelrahman Mohamed Khalaf Allah , Emam Abdelmobdy Abdelrahim , Nagwa Mohamed Elshimi
246 1 5 _aتأثير متبقيات المبيدات على جودة ثمار العنب و التفاح و منتجاتها المصنعة
260 _aCairo :
_bFaten Anwar Abdeldaim Ahmed ,
_c2016
300 _a184 P. ;
_c25cm
502 _aThesis (Ph.D.) - Cairo University - Faculty of Agriculture - Department of Food Science and Technology
520 _aThe present study aimed to estimate penconazole and chlorfenapyr residue in grape, apple fruits and their products, to determinate the rates of fungicides dissipation, half-life values (RL50) and pre-harvest intervals (PHI) and analyzed physical, chemical and biologically. Applications of penconazole and chlorfenapyr pesticides were carried out on grape and apple fruits grown in the open field at Kalyoubia Governorate, samples were collected after (one hour, one day, 3, 5, 7, 9, 11, 15 and 21 days) of application. The pesticide residues were analyzed by GLC and HPLC. The PHI time was 3 and 10 days after penconazole application for grape and apple for fresh fruits or juices product. The PHI time was 21 day after the chlorfenapyr application for grape and apple, that for fresh fruits or juices product. The penconazole residue in grape and apple RL₅₀ was 2. 62 and 1.11 days, respectively, while the RL₅₀ for chlorfenapyr was 2. 86 and 2. 64 days for grape and apple, respectively. Viscosity, total acidity and T.S.S. observed slightly alterations but not significant for fresh, juice or jam samples. The tested pesticides were influenced (slightly increased) on minerals contents for grape and apple samples. The slightly increased in ash by pesticides application was confirmed by the increases in all minerals. Vitamins (A, B₁, B⁴ and C) content were slightly decreased by pesticide application. Total phenols and flavonoids were decreased in their juice or jam. Also, grape contained more amounts than apple
530 _aIssued also as CD
653 4 _aPenconazole
653 4 _aPesticide
653 4 _aResidues
700 0 _aAbdelrahman Mohamed Khalaf Allah ,
_eSupervisor
700 0 _aEmam Abdelmobdy Abdelrahim ,
_eSupervisor
700 0 _aNagwa Mohamed Elshimi ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aSamia
_eCataloger
942 _2ddc
_cTH
999 _c60316
_d60316