اسم المؤلف:
اسيل محمد عمران الطائي
اسم المشرف:
نداء عدنان ابو سراج | ابتهال معز الحسيني
المستخلص:
This study aimed to investigate the phytochemical components and antifungal activity of Cressa cretica L. using Gas chromatography - Mass spectrum (GC - MS) and Fourier transform infrared spectrophotometer (FTIR) techniques in addition to the characterization ( morphological and molecular) of fungal ear infection (otomycosis) and evaluate the antifungal activity (in vitro) of the C. cretica bioactive extracts. The secondary metabolites analysis of C.cretica extracts revealed the presence of phenols, alkaloids, terpenes, flavonoids, glycosides and tannins. The results of GC - MS reported 112 chemical compounds (30 in flowers, 34 in leaves, 23 in stems and 25 in roots). The results of the FTIR confirmed the presence of large numbers of functional groups in each part of the plant and these functional groups which varied according to the solvent type. More of these functional groups were alcohols, phenols, alkanes, alkyl halides, aldehydes, carboxylic acids, aromatics, nitro compounds and amines. The results were designed according to factorial experiments with complete randominal designed. Clinical diagnosis of otomycosis fungi revealed that there are 126 positive casesout of 185 cases included the filamentous fungi Aspergillus niger, A. flavus, A. terreuss, Penicilleum digitatium, either yeasts have included Candida parapsilosis, C. albicans, C. glabrata , C. Krusie. The percentage of Candida was 53.63% while the percentage of filamentous fungi was 46.36%, males was more infected than females, the age group 11 - 20 years old appear more affected than other age groups (19.8%), while the age group 31 - 40 years old and those who are older than 61 years were the least affected. Antifungal activity of C. cretica extracts revealed that each species of Candida had been affected by a part more than others, as well as a certain type of solvents, as follow : C. Parapsilosis largely affected by flowers extract when solvent hexane was used (the diameter of inhibition zone was 10.33 mm) at the concentration of 50%, while the C. albicans was most affected by whole plant when used ethyl acetate solvent (the diameter of inhibition zone was 10.92 mm). Stems extract by using hexane solvent was the most inhibitory growth effect on C. glabrata (the diameter of inhibition zone was 10.8 mm), while the roots extract by using methanol solvent showed largest inhibition on C. krusie growth (the diameter of inhibition zone was 8.56 mm). Minimum inhibitory concentration (MIC) reached to 25% on C. glabrata and C. krusie when using hexane stems extract and methanol roots extract respectively, while C. parapsilosis and C. albicans had reached the minimum inhibitory concentration to 30% when using hexane flowers extract and ethyl acetate whole plant extract.The results revealed that the alkaloids extract are the most effect against all species of Candida under study, the inhibition zone for C. parapsilosis was 4 mm diameters and 3.6 mm for C. albicans , 3.2 mm for C.glabrata and 5.2mm for C. krusie, followed by phenols extracts and terpens with the exception of C. albicans since terpenes extract had been more affected than phenols extracted, and this effect was increased with increasing the concentration of extract. When the C. cretica compared with the antifungal (Fluconazole) the results showed that the effect of extracts had greater inhibitory effect against otomycosis fungi, where the greatest impact of fluconazole was 8.23 mm at concentration 50% in the treatment of C. glabrata, and had the little inhibitory effect on the growth of C. krusie where the diameter of inhibition zone was 0.53 mm at the concentration 50%, and that the inhibitory effect increases with increasing concentration, while roots alkaloids gave inhibitory effect reached to 5.2 mm on C. krusie .
