Home > Catalogo generale > Culture media and ISO confirmation tests > Hektoen Agar – medium for the isolation of Enterobatteriaceae (ISO21567) and Salmonella detection (ISO6579)

Hektoen Agar – medium for the isolation of Enterobatteriaceae (ISO21567) and Salmonella detection (ISO6579)

  • Brand: Bio-Rad
  • Format: 20 x 90 mm Petri
  • Code: BR3563894
  • Technology: Culture media and ISO confirmation tests
  • Application: Food/Water microbiology
  • Tag/Filter: Salmonella,Shigella

Medium used for the isolation of Enterobacteria and for the differentiation of pathogenic Enterobacteria in the analysis of food products. According to ISO21567. The principle of the medium relies on the ability of Enterobacteria to ferment three sugars: lactose, saccharose and salicin. Two indicators display the reaction: bromothymol blue, which turns yellow in the presence of acidity, and fuchsin, which colors in the presence of aldehyde. Further differentiation relying on the production of hydrogen sulfide is possible due to the presence of sodium thiosulfate and ferric citrate. This is manifested by colonies with a black center, coloration resulting from the formation of ferric sulfide. Due to the presence of bile salts, this medium inhibits Gram-positive bacteria. Hektoen is one of the medium included in ISO6579 for the detection of Salmonella and is available also as dehydrated powder.


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Hektoen Agar – medium for the isolation of Enterobatteriaceae (ISO21567) and Salmonella detection (ISO6579)
  • Brand: Bio-Rad
  • Format: 20 x 90 mm Petri
  • Code: BR3563894
  • Technology: Culture media and ISO confirmation tests
  • Application: Food/Water microbiology
  • Tag/Filter: Salmonella,Shigella


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