41:
25:
166:. In the presence of oxygen and strong base, the acetylmethylcarbinol is oxidized to diacetyl, which then reacts with guanidine compounds commonly found in the peptone medium of the broth. Alpha-naphthol acts as a color enhancer, but the color change to red can occur without it.
169:
Procedure: First, add the alpha-naphthol; then, add the potassium hydroxide. A reversal in the order of the reagents being added may result in a weak-positive or false-negative reaction.
330:
Bachoon, Dave S., and Wendy A. Dustman. Microbiology
Laboratory Manual. Ed. Michael Stranz. Mason, OH: Cengage Learning, 2008. Exercise 15, "Normal Flora of the Intestinal Tract" Print.
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155:
that has been inoculated with bacteria. A cherry red color indicates a positive result, while a yellow-brown color indicates a negative result.
388:
683:
927:
789:
381:
365:
874:
688:
321:
MacFaddin, J. F. 1980. Biochemical Tests for
Identification of Medical Bacteria, 2nd ed. Williams and Wilkins, Baltimore
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842:
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578:
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152:
814:
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176:
series, which tests for evidence of an enteric bacterium. The other three tests include: the
40:
24:
638:
224:
163:
31:
342:
Bergey's Manual of
Systematic Bacteriology, Vol. 1. Baltimore, Williams and Wilkins, 1984.
8:
896:
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366:
Voges–Proskauer (VP) Test- Principle, Reagents, Procedure and Result
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668:
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245:
239:
879:
433:
159:
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832:
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173:
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The reaction was developed by Daniel
Wilhelm Otto Voges and
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16:
Microbiological and biochemical method for identification
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82:
105:
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99:
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919:
143:broth culture. The test is performed by adding
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120:
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151:to the Voges-Proskauer broth, which is a
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336:
57:Two bacterial broth cultures, showing a
920:
377:
333:
158:The test depends on the digestion of
65:result (right side) for the VP test.
689:Oxidative/fermentation glucose test
172:VP is one of the four tests of the
13:
14:
949:
815:Antibiotic susceptibility testing
622:biochemical and immunologic tests
349:
303:Institute for Infectious Diseases
928:Biochemistry detection reactions
843:Minimum inhibitory concentration
535:Manual testing: basic techniques
75:
39:
23:
751:Novobiocin susceptibility test
741:Bacitracin susceptibility test
324:
315:
231:VP negative organisms include
191:VP positive organisms include
1:
634:Amino acid decarboxylase test
308:
746:Optochin susceptibility test
709:Sulfide indole motility test
694:Phenylalanine deaminase test
7:
10:
954:
288:
855:
813:
790:Polymerase chain reaction
769:
619:
534:
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493:
452:
426:
412:
135:is a test used to detect
61:result (left side) and a
780:Analytical profile index
356:Voges–Proskauer reaction
933:Microbiology techniques
282:Vibrio parahaemolyticus
153:glucose-phosphate broth
714:Triple sugar iron test
772:point-of-care testing
453:Cultures by body site
406:clinical microbiology
731:Voges–Proskauer test
639:Bile solubility test
494:Cultures by organism
427:Isolation techniques
225:Vibrio alginolyticus
164:acetylmethylcarbinol
32:Enterobacter cloacae
838:McFarland standards
828:Disk diffusion test
823:Beta-lactamase test
756:Lancefield grouping
736:X and V factor test
704:Salt tolerance test
579:Ziehl–Neelsen stain
542:Colonial morphology
206:Serratia marcescens
149:potassium hydroxide
907:Inoculation needle
295:Bernhard Proskauer
915:
914:
892:Biosafety cabinet
851:
850:
699:Reverse CAMP test
519:
518:
501:Bacterial culture
276:Vibrio vulnificus
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902:Inoculation loop
800:Rapid strep test
532:
531:
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270:Vibrio fluvialis
264:Vibrio furnissii
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674:Methyl red test
621:
620:Manual testing:
615:
574:India ink stain
564:Acid-fast stain
527:
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465:Genital culture
448:
444:Selective media
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360:Merriam–Webster
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301:in 1898 at the
299:bacteriologists
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218:Vibrio cholerae
182:methyl red test
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72:Voges–Proskauer
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770:Automated and
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654:Coagulase test
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525:Identification
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506:Fungal culture
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475:Throat culture
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470:Sputum culture
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404:Techniques in
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350:External links
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220:biotype El Tor
145:alpha-naphthol
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875:Anaerobic jar
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868:Growth medium
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805:Monospot test
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511:Viral culture
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485:Wound culture
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480:Urine culture
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460:Blood culture
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938:Bacteriology
730:
679:Nitrite test
649:Citrate test
590:Rapid tests
569:Giemsa stain
439:Streak plate
370:
326:
317:
292:
280:
274:
268:
262:
256:
252:Edwardsiella
250:
244:
238:
232:
230:
223:
217:
212:Hafnia alvei
210:
204:
198:
194:Enterobacter
192:
190:
186:citrate test
171:
168:
157:
132:
71:
70:
62:
58:
46:
30:
887:Durham tube
719:Urease test
528:and testing
234:Citrobacter
178:indole test
50:myxofaciens
922:Categories
863:Agar plate
659:DNAse test
559:Gram stain
309:References
258:Salmonella
200:Klebsiella
184:, and the
897:Incubator
856:Equipment
785:MALDI-TOF
684:ONPG test
644:CAMP test
547:Hemolysis
414:Isolation
297:, German
141:bacterial
761:RPR test
669:KOH test
629:ALA test
599:Catalase
586:Wet prep
554:Staining
246:Yersinia
240:Shigella
63:negative
59:positive
880:Gas-pak
594:Oxidase
434:Asepsis
419:culture
289:History
160:glucose
137:acetoin
48:Proteus
604:Indole
362:Online
279:, and
222:, and
180:, the
833:Etest
795:VITEK
724:rapid
664:IMViC
237:sp.,
174:IMViC
139:in a
417:and
147:and
609:PYR
358:at
162:to
131:or
924::
335:^
305:.
285:.
273:,
267:,
261:,
255:,
249:,
243:,
228:.
215:,
209:,
203:,
197:,
188:.
133:VP
124:ər
118:aʊ
86:oʊ
397:e
390:t
383:v
127:/
121:.
115:k
112:s
109:ɒ
106:r
103:p
100:ˈ
95:s
92:ə
89:ɡ
83:f
80:ˈ
77:/
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