esculin


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Related to esculin: Aesculin

esculin

[′es·kyə·lən]
(pharmacology)
C15H16O9 A substance extracted from the leaves and bark of the horse chestnut tree; used as a skin protectant.
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For FE confirmation, after 48 h at 35 [degrees] C, filters with red colonies were placed on Esculin Iron Agar (Difco) for 20-30 min, and those red colonies surrounded with a brown-black precipitate were counted.
Esculin (CAS 531-75-9) Market Research Report 2012 presents comprehensive data on esculin markets globally and regionally (Europe, Asia, North America etc.
Reactions for indole, urea, and bile esculin were negative.
Representative colonies with morphological characteristics of MS were counted, isolated and biochemically confirmed to be MS utilizing mannitol, sorbitol, lactose, raffinose, melibiose and esculin.
Now, Key characters are used for species and subspecies identification include colony morphology, oxygen requirements, coagulase, clumping factor, heat-stable nuclease, hemolysins, catalase, oxidase, alkaline phosphatase, urease, ornithine decarboxylase, pyrrolidonyl arylamidase, [beta]- galactosidase, acetoin production, nitrate reduction, esculin hydrolysis and aerobic acid production from a variety of carbohydrates including D-trehalose, Dmannitol, D-mannose, D-turanose, D-xylose, D-cellobiose, L-arabinose, maltose, -lactose, sucrose, and raffinose, and intrinsic resistance to novobiocin and polymyxin B [7].
equi is non-motile, non-fermentative, and positive for catalase, urease, alpha-glucosidase, alkaline phosphatase and nitrate reduction, but is negative for oxidase, indole, citrate assimilation and esculin hydrolysis.
maltophilia isolates were identified as lactose-fermentation-negative colonies that were oxidase-negative (Oxidase kit, Beckton Dickinson, BBL, MD) and esculin hydrolysis-positive (Hardy Diagnostics, CA).
1 2 3 Growth at: 44[degrees]C - - + Degradation of: Casein v - + Esculin v + - Chitin - + - Acid from: - - D-galactose - + - Lactose - + - D-melibiose - + - Salicin - + - Sorbitol - + - Use of: - - L-alanine - + - L-serine - + - 1.
Purified forms of horse chestnut plant are available as escin and esculin, both of which have good anti-inflammatory effects.
Thermotolerant enterococci were verified by lack of catalase production, esculin hydrolysis and growth at 44.
The SwabCheck works on an enhanced Esculin media formulation, whereby the hydrolysis of Esculin gives a distinct black/brown precipitate indicating the presence of Listeria species.
After incubation, the organism is identified as an enterococcus on the basis of morphology of cultures and a negative catalase test and if esculin hydrolysis and PYR reaction (pyrrolidonyl-[beta]-naphthylamide hydrolysis) are positive.