[Diagnostic value of the acid production from galacturonate to differentiate strains of "Salmonella" sub-genus I and monophasic sub-genus III from the other "Salmonella" strains belonging to sub-genera II, diphasic III, IV, "Citrobacter" and "Hafnia alvei" (author's transl)].
Two methods were compared: (1) the ability to use sodium glacturonate as source of carbon and energy in defined medium; (2) the ability to produce acid by fermentation of this substrate in peptone water with phenol red. Results of growth on, acid formation from, galacturonate are identical. Salmonella strains of sub-genus I and monophasic serotypes of sub-genus III do not use galacturonate. Salmonella of sub-genera II and IV as well as diphasic serotypes of sub-genus III use galacturonate. Glacturonate-negative Salmonella are isolated mainly from man and warm-blooded animals whereas galacturonate-positive Salmonella are most often isolated from cold blooded animals and from the enrivonment. Citrobacter and Hafnia alvei which may be confused with Salmonella spp. are galacturonate-positive.
D002954:Citrobacter / Q000145:classification / Q000378:metabolism; D004755:Enterobacteriaceae / Q000145:classification / Q000378:metabolism; D005285:Fermentation; D005965:Glucuronates / Q000378:metabolism; D006603:Hexuronic Acids / Q000378:metabolism*; D012475:Salmonella / Q000145:classification* / Q000378:metabolism; D014574:Uronic Acids / Q000378:metabolism*
D005965:Glucuronates; D006603:Hexuronic Acids; D014574:Uronic Acids
Intérét de la recherche de la fermentation du galacturonate pour différencier les Salmonella des sous-genres I et III monophasiques des autres Salmonella des sous-genres II, III diphasiques, IV, et de Citrobacter et Hafnia alvei.