Incubation conditions: 18 hours at 30-35☌ Inoculum concentration: 10.000–1.000. XLD stands for xylose lysine deoxycholate. What Agar does Salmonella grow on 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.
SHIGELLA XLD AGAR MAC
Isolation rates for shigellae were 77 on HE, 86 on Mac and Mac-X, and 91 on XLD. The agar itself will turn red due to the presence of Salmonella type colonies. Incubation conditions: 18 hours at 30-35☌ Inoculum concentration: 10–100 CFU OrganismĬolonies with black centre and a lightly transparent reddish zone due to the colour change of the medium A total of 678 stool specimens were cultured on four different agars: on xylose-lysine-desoxycholate agar (XLD), MacConkey agar (Mac), MacConkey agar supplemented with xylose (Mac-X), and Hektoen enteric agar (HE). (Microbiological Examination of non-sterile products in accordance with Chapter 2.6.13). The Microbiological Performance Test is carried out in accordance with the requirements of Pharm. It utilizes sodium deoxycholate as the selective agent and, therefore, is inhibitory to gram-positive micro-organisms. It contains yeast extract as a source of nutrients and vitamins. XLD (Xylose Lysine Desoxycholate) Agar is used mainly for the isolation of Salmonella and Shigella in food products. XLD Agar (Dehydrated) Catalog number: CM0469R Related applications: Microbiology Technical Support Customer Service Isolate Salmonella and Shigella from clinical specimens and foods with selective Thermo Scientific Oxoid XLD Agar (Dehydrated). *Adjusted as required to meet performance standards XLD Agar is both a selective and differential medium. It is particularly suitable for the isolation of Shigella species, which often show no growth due to other toxic growth factors.
XLD allows for the differentiation of pathogens of non-pathogenic lactose-fermenting species as well as non-pathogenic microorganisms that ferment neither lactose nor sucrose. The medium is particularly well suited for the investigation, since other microorganisms are strongly inhibited from growth. Hektoen enteric agar (HEK, HE or HEA) is a selective and differential agar primarily used to recover Salmonella and Shigella from patient specimens. Xylose Lysine Desoxycholate Agar is a differential selective medium for the isolation and differentiation of Gram Negative enteric pathogens, especially Salmonella and Shigella, from foods, pharmaceutical and clinical samples. 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.
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