Chromogenic Cronobacter Isolation Agar (CCI) Chromogenic Media

Chromogenic Cronobacter Isolation Agar (CCI)


CCI Agar is used for the detection of Cronobacter spp. in food products and ingredients intended for human consumption and the feeding of animals. It is also used for the control of production environmental samples. 


Tryptone stimulates the growth of Cronobacter. 

Yeast extract is a source of complex vitamin B.  

Sodium chloride maintains osmotic pressure.  

Sodium desoxycholate allows the inhibition of Gram positive flora. 

The enzyme α-glucosidase hydrolyzes the X-α-glucoside and liberates the aglycone 5 bromo-4-chloro-indolol. In the presence of oxygen, this aglycone is dimerized and forms the pigment bromo-chloro-indigo.  

The association of ferric ammonium citrate and sodium thiosulfate allows the differentiation of enterobacteria that are H2S positive from those of Cronobacter. 

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