اجريت عملية غربلة اولية على عدد من الخمائر المعزولة من مصادر مختلفة من حيث قدرتها على انتاج انزيم الانفرتيز فتبين ان خمس عزلات منها تعود الى جنس Candida تميزت بقابليتها على انتاج الانزبم ، ووجد العزلة التي رمز لها C5 كانت أكفا تلك العزلات . درست الظروف المثلى لإنتاج الإنزيم وبطريقة المزارع المغمورة من هذه العزلة . تبين أن أعلى انتاجية تحققت باستخدام الرافينوز كصدر للكاربون وبتركيز 3% و مزيج خلاصة الخميرة وكبريتات الامونيوم وبنسبة 1:1 وبتركيز 0.4 % كمصدر للنتروجين وبرقم هيدروجيني ابتدائي 6 وبمدة حضن 28 ساعة على درجة 35 م˚ حيث بلغت فعالية الانزيم تحت هذه الظروف 1.58 وحدة /مل وبفعالية نوعية مقدارها 6.07 وحدة /ملغم
Nanotechnology is a continually expanding field for its uses and applications in multiple areas i.e. medicine, science, and engineering. Biosynthesis is straightforward, less-toxicity, and cost-effective technology. TiO2 NPs biosynthesis has attained consideration in recent decades. In this study, probiotic bacteria were isolated from cow’s raw milk samples, and then were identified by using the Vitek2 system; as Leuconostoc spp. included Leuconostoc mesenteroides subsp. mesenteroides (Leu.1), Leuconostoc mesenteroides subsp. cremoris (Leu.4), and Leuconostoc pseudomesenteroides (Leu.14). All Leuconostoc spp. isolates showed an ability for TiO2 NPs bio-production, after being incubated at anaerobic conditions (30 o C/ 24 h) in DeM
... Show MoreThis study aimed to isolate and identify Cryptococcus species from three distinct sources: sputum samples of pigeon fanciers, dried pigeon droppings, and eucalyptus tree leaves. A total of 150 specimens were collected over a two-month period, comprising 50 samples each from human sputum, pigeon droppings collected across various areas of Baghdad, and eucalyptus leaves obtained from the Baghdad College of Veterinary Medicine. All samples were cultured on Sabouraud dextrose agar supplemented with chloramphenicol and incubated at 25°C for 2–3 days. From the initial cultures, 20 isolates presumptively identified as Cryptococcus spp. were obtained: 6 isolates (12%) from human sputum, 9 isolates (18%) from pigeon droppings, and 5 isol
... Show MoreThe main aim of this study was to molecular identification and determine the antagonistic impact of rhizosphere Trichoderma spp. against some phytopathogenic fungi, including (Magnaporthe grisea) pyricularia oryzae, Rhizoctonia solani and Macrophomina phasolina. Four Trichoderma isolates were isolated from rhizosphere soils of the different host plants in different locations of Egyptian governorates. The morphological characterization of isolated Trichoderma as well as using of (ITS1-5.8S-ITS2) ribosomal gene sequence acquisition and data analyses. By comparing the results of DNA sequences of ITS region, the fungi represented one isolate were positively identified as T. asperellum (1 isolate T1) and one as T. longibrachiatum (1 isolate T2)
... Show MoreNon-thermal or cold plasma create many reactive species and charged particles when brought into contact with plant extracts. The major constituents involve reactive oxygen species, reactive nitrogen species and plasma ultra-violets. These species can be used to synthesize biologically important nanoparticles. The current study addressed the effect of the green method-based preparation approach on the volumetric analysis of Zn nanoparticles. Under different operating conditions, the traditional thermal method and the microwave method as well as the plasma generation in dielectric barrier discharge reactor were adopted as a preparation approach in this study. The results generally show that the type of method used plays an important rol
... Show MoreNon-thermal or cold plasma create many reactive species and charged particles when brought into contact with plant extracts. The major constituents involve reactive oxygen species, reactive nitrogen species and plasma ultra-violets. These species can be used to synthesize biologically important nanoparticles. The current study addressed the effect of the green method-based preparation approach on the volumetric analysis of Zn nanoparticles. Under different operating conditions, the traditional thermal method and the microwave method as well as the plasma generation in dielectric barrier discharge reactor were adopted as a preparation approach in this study. The results generally show that the type of method used plays an important role in d
... Show MoreOf the most prominent elements of the educational process in physical education is a curriculum decision, which is containing a number of elements, including the book Alorteurllmadp study and which must be characterized by a high level of quality is reflected on the nature of the scientific level that will excel by the students after them with knowledge about it and to identify the vocabulary and here emerged the idea and the importance of Find Considering researchers that the quality of the textbook of the article subjects of great importance in the delivery of educational material form the right and perhaps the most prominent subjects and most important for the students of Physical Education is a substance that teaching methods and so to
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تناول هذا البحث أهم وابرز النظريات الفلسفية المعاصرة وهي نظرية المادية الجدلية ، والتي اذعنت بأفكارها ان المادة هي الاساس الوحيد في اصل الوجود ، وان الموجودات مهما بلغت من مرتبة فهي دون مرتبة المادة ، وعلى هذا الاساس قامت اسسهم ، وكان للعلماء المسلمين موقفا صلبا امام هذه النظرية ، فعملوا على تفنيد هذه الاسس وابطالها بكل الوسائل المتاحة لديهم ، من
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