Enterococci

enterococciEnterococci is a group a streptococcal bacteria that live in the intestines of humans and animals.
Enterococci have the form of elongated gram-positive cocci with pointed ends. Some strains of cells has the correct spherical form. Are enterococci mostly in pairs and small groups. In the liquid environment they form short chains that are under cultivation in the whole bullish bile reach considerable length. For enterococci characterized by sharp differences in form and size. Enterococci unpretentious, grow well in the usual nutrient media. The temperature limits of growth ranging from 10 degrees to 45 degrees. On the surface dense environments form a small, round, convex homogeneous, well-refracting the light of the colony, slightly bluish, sometimes unclear. Enterococci withstand heat up to temperature 60 degrees, resistant to the action of certain dyes and antibiotics. They are the agents of a number of pathological processes: endocarditis, enteritis, colitis and other

Enterococci group of germs of the genus Streptococcus that live in the intestines of humans and animals.
The most widespread Str. faecalis (Str. faecium), Str. durans. Enterococci are somewhat elongated cells with pointed ends. Meet cells and correctly rounded. In liquid media are with chains, solid - pairs or in small clusters. They can be different sizes, even in one pair or in a single chain. The dispute, and capsule form. Described movable options. Enterococci well grow on nutrient mediums. Adding to the medium glucose or yeast medications grow more intensively.
Enterococci remain viable when heated up to temperature 60 degrees for 30 minutes. More resistant to chlorine and high salt concentrations than E. coli. Resistant to antibiotics (penicillin, streptomycin, polymyxin and others). For differential diagnosis of enterococci and other streptococci use a number of properties to be included in the concept of criteria ("test") of Sherman: temperature limits of growth, opportunity for growth in 40% of bile broth, growth in milk from 0.1% methylene blue, heat resistance etc., Enterococci may be lysed specific phage.
The definition of enterococci used to detect the sanitary condition of objects of external environment - water, wastewater, and so on, a Number of researchers believe Enterococcus more sensitive indicator of fresh faecal pollution than E. coli, as Enterococcus not propagated outside of the human or animal. Method of determination of Enterococcus introduced in the international and European standards on the study of drinking water, published by who in 1958 and 1962,
Proven role enterococci in pathological processes in the abdomen, urinary tract, endocarditis, cholecystitis, pancreatitis, etc. There is an opinion that enterococci can cause of foodborne disease. However, the use in food of products, for production of which is used culture of enterococci to give them a unique flavor and aroma (for example, cheese "cheddar"), does not cause pathological phenomena. Described very few outbreaks of disease (a little more than 10)caused by enterococci. Only a few, rare strains of enterococci can cause food poisoning if the massive contamination of the food product.
Cm. also Streptococci.