AKI MEDIUM

Escherichia coli, a member of the family Enterobacteriaceae is a part of normal flora of the intestinal tract of humans and a variety of animals. Although most of E. coli does not cause gastrointestinal illnesses, certain groups of E.coli can cause life-threatening diarrhoea and sever sequelae or disability. Chromogenic ECC Agar is a differential medium recommended for the presumptive identification of E. coli and other coliforms in food and environmental samples. The medium contains two chromogens. One of the chromogen is cleaved by the enzyme glucuronidase produced by E.coli to give blue to purple coloured colonies whereas the other chromogen is cleaved by the enzyme galactosidase, produced by majority of coliforms, resulting in the formation of rose-pink coloured colonies.

for presumptive identi?cation of Escherichia coli and other coliforms in food and environmental samples