Cetrimide agar
Cetrimide agar is a type of agar used for the selective isolation of the gram negative bacteria Pseudomonas aeruginosa. [1] As the name suggests, it contains cetrimide, which is the selective agent against alternate microbial flora. [2] The cetrimide of the agar also inhances the production of pigments such as pyocyanin, which produces the characteristic blue or blue-green colour associated with Pseudomonas colonies. [3] Another pigment produced by Pseudomonas on cetrimide agar is flourescein, showing a characteristic yellow-green colour. [4]
Cetrimide agar is widely used in the examination of cosmetics, pharmaceuticals and clinical specimens to test for the presence of Pseudomonas aeruginosa. [5]
References
- ^ http://www.bd.com/ds/technicalCenter/inserts/Cetrimide_Agar_Base.pdf "Cetrimide Agar Base • Pseudosel™Agar". Accessed May 3, 2008.
- ^ http://www.chromocult.info/tedisdata/prods/4984-1_05284_0500.html "Pseudomonas Selective Agar, Base (Cetrimide Agar)". Accessed May 3, 2008.
- ^ http://www.sigmaaldrich.com/fluka/product%20information%20sheet/14521_data_sheet_101kb.pdf "14521 Cetrimide Agar Plates". Accessed May 3, 2008.
- ^ http://www.condalab.com/pdf/1102.pdf "Cetrimide Agar Base". Accessed May 3, 2008.
- ^ http://www.bd.com/ds/technicalCenter/inserts/Cetrimide_Agar_Base.pdf "Cetrimide Agar Base • Pseudosel™Agar". Accessed May 3, 2008.