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Hektoen enteric agar (HEK, HE or HEA) is a selective and differential agar [1] primarily used to recover Salmonella and Shigella from patient specimens. HEA contains indicators of lactose fermentation and hydrogen sulfide production; as well as inhibitors to prevent the growth of Gram-positive bacteria.
Salmonella growing on XLD agar. Xylose lysine deoxycholate agar (XLD agar) is a selective growth medium used in the isolation of Salmonella and Shigella species from clinical samples and from food. [1] [2] The agar was developed by Welton Taylor in 1965. [3]
Rappaport-Vassiliadis soya peptone broth (RVS broth) is used as an enrichment growth medium for the isolation of Salmonella species. [1] It is not recommended for the enrichment of Salmonella Typhi or Paratyphi, which is inhibited due to the malachite green in RVS broth. [2] It is an alternative to selenite broth.
Salmonella spp appear to be yellow or colourless colonies, often with a dark centre. As there are many bacteria that also look like Salmonella on DCA, it is widely recommended that more selective agars are used for the identification of Salmonella, namely xylose lysine deoxycholate (XLD) agar. This growth medium is heat-sensitive and should be ...
Selenite broth is used as a selective medium for the isolation of Salmonella species. [1] Selenite broth was originated by Leifson, [2] while observing good recovery of Salmonella spp. and reduced growth of fecal coliforms. Selenite broth is used as a selective enrichment for the cultivation of Salmonella spp. that may be present in small ...
On September 6, the FDA recalled o ver 345,000 dozen eggs across Wisconsin, Illinois, and Michigan, after linking them to a salmonella outbreak that has infected 65 people across nine states, with ...
Endo agar. Endo agar (also called Endo's medium) is a microbiological growth medium with a faint pink colour. [1] Originally developed for the isolation of Salmonella typhi, it is now used mostly as a coliform medium.
LB medium bottle and LB agar plate Plate medium agar LB. Lysogeny broth (LB) is a nutritionally rich medium primarily used for the growth of bacteria. Its creator, Giuseppe Bertani, intended LB to stand for lysogeny broth, [1] but LB has also come to colloquially mean Luria broth, Lennox broth, life broth or Luria–Bertani medium. [2]