Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to esculin: Aesculin


A glucoside from horse-chestnut bark; used as a sun block.
[L. aesculus, the Italian oak]

esculin, aesculin

a hydroxycoumarin glycoside found in the bark of Aesculus spp. Together with ferric citrate, it is used in a broth for the identification of some bacteria which cause hydrolysis and a color change. Also causes animal poisoning; see aesculus.
References in periodicals archive ?
diacetylactis produced acetoine, all possessed arginine dihydrolase and all hydrolyze esculin and growth on citrate.
5% isolates exhibited esculin hydrolysis, while starch hydrolysis was shown by 70% of the strains.
In nature, horse-chestnut tree bark has an esculin content of three percent.
1% esculin (Soriano, Fernandez Roblas, Calvo, & Garcia Calvo, 1998), previously adjusted to the 0.
All isolates were confirmed as enterococci [grew on enterococcosel agar (BBL), were catalase negative, hydrolyzed esculin, grew in 6% NaCl broth, and grew at 44.
Versalovic, 2011) Table 2: Phenotypic characteristics of Leptotrichia species Species Catalase Esculin Beta- hemolysis L.
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.
Enterococcus fecalis was identified by its ability to hydrolyze esculin in the presence of bile using the bile esculin medium [14].
Iso-lates were identified to the genus and species level based on the standard biochemical and microbiologi-cal methods such as: morphologic appearance on Gram-stain (gram negative coccobacilli), oxidase negative, catalase and citrate positive, nonmotile, negative esculin hydrolysis, growth at 41oC and nega-tive lysine decarboxylase.
Acid was produced from glucose, mannitol, inositol, sorbitol, sucrose, melibiose, esculin, lactose, salicin, xylose, adonitol, saccharose, trehalose cellobiose, raffinose and arabinose.