ONPG test

ONPG test

o-nitrophenyl-β-d-galactopyranoside test, a test used to distinguish Salmonella arizonae from other Salmonella spp.
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The test conducted included Gram stain for morphology, hanging drop for motility, oxidase test, catalase test, indole, methyl red, Voges-Proskauer, citrate utilization, urease production oxidative-fermentative test (Hugh-Leifson medium) for glucose, utilization of 10% lactose, gelatin liquefaction, lysine and ornithine decarboxylation, arginine dihydrolase test, growth at 42[degrees]C and 44[degrees]C, esculin hydrolysis and ONPG test.
Bile esculin Optochin disc NaCI Sugar fermentation Coagulase Tease preps Catalase Beta-lactamase ONPG test for beta-galactosidase Enteric identification strip X & V (X factor & V factor) Non-fermenting identification strip Darkfield microscopy Yeast identification strip Oxidase Antigen extraction for beta strep Nitrate Gram stain
Furthermore, the isolate exhibited positive results in oxidase, catalase, indole, methyl red, esculin hydrolysis, nitrate reduction, ONPG test, arginine dehydrolase test, urease, gelatin liquefaction, casein hydrolysis and DNase test presented in table 2.