methyl red test


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Related to methyl red test: nitrate reduction test, urease test

methyl red test

[′meth·əl ¦red ‚test]
(microbiology)
A cultural test for the ability of bacteria to ferment carbohydrate to form acid; uses methyl red as the indicator.
References in periodicals archive ?
The principal biochemical tests performed for this purpose include, lactose fermentation test (LAC), indole test (IND), methyl red test (MR), Voges-Proskauer test (VP), urease test (URE), catalase test (CAT), aerobic and anaerobic test (Ae/An).
Positive results for catalase and methyl red tests and negative results for oxidase, indole utilization tests and Voges-Proskauer tests were recorded.
Biochemical test Klebsiella Escherichia pneumonia coli Catalase test + ve + ve Oxidase test - ve - ve simmon citrate test + ve - ve Urease test + ve Yellow/Yellow with gas production(-)ve TSI + ve + ve Indol test - ve + ve Motility test - ve + ve Methyl red test - ve + ve Vogas-proskaure test + ve - ve Gram stain - ve - ve Cell morphology On Macconkey agar Smooth, glassy and bacterial colonies translucent, rosy have a viscous/ pink on MacConkey mucoid appearance with the appearance of metallic sheen when growing on Eosin methylene blue.