مشاريع التخرج - The application of e.coli bacteria in biotechnology And genetic engineering
  1. الصفحة الرئيسية
  2.   مشاريع التخرج
  3.   The application of e.coli bacteria in biotechnology And genetic engineering
عنوان المشروعThe application of e.coli bacteria in biotechnology And genetic engineering
المشرف على المشروعأ.م مروة عباس عبد الرزاق حمد كبة
العام الدراسي2019-2020
تقديم الطالبمنان يحيى ذياب
و الطالبعلي حسين رزاق
ملخصEscherichia Coli Escherichia coli also known as E. coli is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms (endotherms). Most E. coli strains are harmless, but some serotypes can cause serious food poisoning in their hosts, and are occasionally responsible for food contamination incidents that prompt product recalls. The harmless strains are part of the normal microbiota of the gut, and can benefit their hosts by producing vitamin K2,(which helps blood to clot) and preventing colonisation of the intestine with pathogenic bacteria, having a symbiotic relationship. E. coli is expelled into the environment within fecal matter. The bacterium grows massively in fresh fecal matter under aerobic conditions for 3 days, but its numbers decline slowly afterwards. E. coli and other facultative anaerobes constitute about 0.1% of gut microbiota, and fecal–oral transmission is the major route through which pathogenic strains of the bacterium cause disease. Cells are able to survive outside the body for a limited amount of time, which makes them potential indicator organisms to test environmental samples for fecal contamination. A growing body of research, though, has examined environmentally persistent E. coli which can survive for many days and grow outside a host.