تصفح QU Ceased Journals حسب المؤلف "Ismail, S. I."

السجلات المعروضة 1 -- 11 من 11

    • Comparative studies of the oil from silybum marianum cultivated in Egypt using glc 

      Hammouda, F. M. [فايزة محمود حمودة]; Ismail, S. I.; Hassan, N. M.; Zaki, A. K. ( Qatar University , 1994 , Article)
      Quantitative comparative study of the oil fraction constituents in the fruits of Silybum marianum successfully cultivated in new reclaimed land with those of the two wild types viz., purple flower and white flower bearing ...

    • Constituents Of Green Beans Phaseolus Vulgaris (Lipids And Flavonoids) 

      Rizk, A.M.; Ismail, S.I.; Azzam, S.A.; Wood, G. ( Qatar University , 1992 , Article)
      Chemical study of the lipid fraction resulted in the isolation and identification of a hydrocarbon fraction (n-Czg -0-033); an aliphatic alcohol fraction (C^, Czp, €30) and a sterol fraction (stigmasterol and sitosterol). ...

    • Constituents of plants growing in qatar part xxvii: flavonoids Of cymbopogon parkeri 

      Rizk, A. M. [عبد الفتاح محمد رزق]; Hammouda, F. M.; Ismail, S. I.; Kamel, A. S.; Rimpler, H. ( Qatar University , 1995 , Article)
      The study of the flavonoids of Cymbopogon parkeri resulted the isolation and indentification of tricin and isoorientin. Three other flavonoids have been isolated and partially identified.

    • Constituents of plants growing in qatar xxiii. Flavonoids of francoeuria crispa 

      Rizk, A. M. [عبد الفتاح محمد رزق]; Hammouda, F. M.; Ismail, S. I.; Hussiney, H. A. ( Qatar University , 1993 , Article)
      Investigation of the flavonoid constituents of Francoeuria crispa, resulted in the isolation and identification of four flavonoids: quercetin, qucrcetin-3-O-gIucoside, quercetin-7-0-glucoside and quercetin-3-methyl ether.

    • Constituents of plants growing in Qatar xxiv phytochemical investigation of salvia aegyptiaca L. 

      El Missiry, M. M. [مصطفى محمود المسيري]; Hussiney, H. A.; Ismail, S. I.; Radwan, H. M.; Rizk, A. M. ( Qatar University , 1994 , Article)
      The study of the flavonoids revealed the isolation and identification of luteolin, luteolin 7-O- glucoside, apigenin and apigenin 7-0 glucoside; their identity was proved by m.p., TLC, UV, IR and MS. Moreover, a coumarin ...

    • Ecological and phytochemical studies on the "miswak", salvadora persica l. 

      Ma'ayergi, H. A. [حسن المعايرجي]; Ismail, S. I.; Batanouny, K. H.; Rizk, A. M. ( Qatar University , 1984 , Article)
      The "Miswak", which is produced from the stolons and branches of Salvadora persica is used as a substitute for ordinary tooth brushes. The use of "Miswak" has been recommended by Islam. It is endowed by several characteristics ...

    • Evaluation of Some Local Egyptian Plants as a Source of Chlorophyll Pigments 

      Hammouda, F. M. [فايزة محمود حمودة]; Ismail, S. I.; Hussiney, H. A.; Hussein, A. A. ( Qatar University , 1994 , Article)
      Four plant materials viz. Spinacia oleracae Linn, (spinach), Beta vulgaris Limm (chard), Medicago sativa Linn, (alfalfa) and Petroselinum sativum Hoff. (parsely) were studied as local sources for the preparation of chlorophyll ...

    • HPLC and MS analyses of lutein-esters from tagetes patula L. 

      Karawya. M. S. [محمد سعد الدين عبد الرازق]; Ismail, S. I.; Hammouda, F. M.; Zaki, A. K.; Nazif, N. M. ( Qatar University , 1996 , Article)
      Investigation of the xanthophyll esters of Tagetes patula L. flowers resulted in the isolation and identification of lutein, lutein dimyristate, lutein myristate palmitate, lutein dipalmitate and lutein palmitate stearate. ...

    • Phytochemical investigation of thymus decassatus l. 1. Flavonoids and volatile oil 

      Khodair, A. I. [احمد اسماعيل خضير]; Hammouda, F. M.; Ismail, S. I.; El-Missiry, M. M.; El-Shahed, F. A.; ... more authors ( Qatar University , 1993 , Article)
      Investigation of the flavonoidal constituents of Thymus decassatus, L. resulted in the isolation and identification of thymonin, 5,6,4'-trihydroxy-7,3'-dimethoxyl flavone, and apigenin. Investigation of the volatile oil ...

    • Pyrrolizidine alkaloids from alkanna orientalis (L.) Boiss 

      Hammouda, F. M. [فايزة محمود حمودة]; Ismail, S. I.; Hassan, N. M.; Tawfiq, W. A.; Kamel, A. ( Qatar University , 1992 , Article)
      Three pyrrolizidine alkaloids; 7-angelyl retronecine (I), 9-angelyl retronescine (II), and dihydroxytriangularine (III) were isolated by DCCC and VLC from Alkanna orientalis growing in Egypt. Their structures were elucidated ...

    • Pyrrolizidine Alkaloids From Senecio Aegyptius L. 

      Rizk, A. M. [عبد الفتاح محمد رزق]; Hammouda, F. M.; Ismail, S. I.; Hassan, N. M. ( Qatar University , 1988 , Article)
      Investigation of the alkaloidal constituents of Senecio aegyptius L. resulted in the isolation and identification of senecionine, dehydrosenkirkine and probably an isomer of seneciphylline. TLC, HPLC and GLC showed the ...