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Article
Capability of Lactobacillus acidophilus supernatant to inhibit production of lipase from methicillin-resistant Staphylococcus aureus
على تثبیط انتاج اللایبیز من العنقودیات الذهبیة المقاومة Lactobacillus acidophilus مقدرة طافي للمیثیسیلین.

Authors: Harith Jabbar Fahad حارث جبار فهد --- Hala Muayad Radeef حلا مؤید ردیف
Journal: Journal of university of Anbar for Pure science مجلة جامعة الانبار للعلوم الصرفة ISSN: ISSN: 19918941 Year: 2011 Volume: 5 Issue: 2 Pages: 1-5
Publisher: University of Anbar جامعة الانبار

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Abstract

The ability of acid supernatants of Lactobacillus acidophilus isolated from a vinegar weretested against methicillin resistant Staphylococcus aureus (MRSA) with lipolytic activity isolated from acnepimple. Results revealed a significant effect of cell free supernatant on MRSA isolates in comparison withcontrol. Furthermore, subinhibitory concentrations of acid supernatants found to be very effective ininhibiting the production of lipase from biofilm and planktonic cells of MRSA isolates. What's more, acidsupernatants of L. acidophilus showed inhibiting effect on the crude lipase in egg yolk agar plates

المعزولة من الخل ضد العنقودیات الذهبیة المقاومة Lactobacillus acidophilus الخلاصة:اختبرت قدرة الطافي الحامضي لبكتریامقارنة مع MRSA المحللة للدهون المعزولة من حب الشباب. اظهرت النتائج تاثی ا ر معنویا للطافي في عزلات (MRSA) للمیثیسیلنالسیطرة. كما وجد ان الت ا ركیز تحت المثبطة للطافي الحامضي كانت مؤثرة جدا في تثبیط انتاج اللایبیز من الخلایا الهائمة و الغشاء الحیاتيفضلا عن ذلك امتد التأثیر التثبیطي الى اللایبیز الخام في اطباق مح البیض. .MRSA لعزلات


Article
Study the Microbiologically Influenced Corrosion of Carbon Steel

Author: Zuheir T.Khulief.Al-Tai
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2011 Volume: 29 Issue: 15 Pages: 3141-3157
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

The main objective of this study was to evaluate the microbiologicallyinfluenced corrosion of carbon steel in water, samples of water taken from Al-Hilla rivers and distill water (control medium ). Corrosion analyses by using (Liner polarization tafel test; weight loss method ; microstructure examination , surface roughness test and X-Ray diffraction analysis) and microbiological analyses by using(Isolation and identification by using appearance factors microscopic ,culturing factors and biochemical tests for biofilm of corrosion product) are used in this study. The result of corrosion analyses shows the corrosion rates of carbon steel in rivers water are more than that in control water, the microstructure examination and surface roughness tests show increase in roughness of met.al. surfaces which areunder the corrosion medium (rivers water) compared with control medium. The result of microbiological analyses shows the slides that made from the biofilm (product of corrosion) under microscopic appear small bacilli negative gram strain (G-ve) bacteria, where as culturing test shows small colonies with 2.5ìm in diameter of bacteria have mucin appearance and green pigments as well as the result frombiochemical tests; these facts indicate that Pseudomonas aeruginosa bacteria are correlated with the type of corrosion occurring in the carbon steel in the rivers water.

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