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Table 2 Phenotypic characteristicsa of G. stearothermophilus strains

From: Insights into the Geobacillus stearothermophilus species based on phylogenomic principles

Characteristic A1b,g D1b,g P3b,g Dairyc ATCC 7953d ATCC 12980e Species descriptionf
Motility + v n/d n/d +
Acid from:        
Adonitol -*n/d
Amidong + v +* v* n/d
Arabinose w w w/− v
Cellubioseg + + + + v -*
Fructose + + + + + + +
Galactoseg w + + w/+ v
Gentiobioseh v -* v
Glucose n/d n/d n/d + + + +
Glycerol n/d n/d n/d - +* v +
Glycogeng,h v +* + +
Inositol
Inuling v +
Lactoseg + + + + -*
Maltose n/d n/d n/d + + + +
Mannitol Var Var
Mannoseh + + + v +* + +
Melezitoseh + v +* + +
Melibiose + + + v +* + +
MethylD-glucosideg, h v n/d + +
Raffinose, h n/d n/d n/d v v + +
Rhamnose
Ribose -*
Salicing, h + + + v -* v
Sorbitol
Sucrose + + + + + + +
Trehaloseh + + v +* + +
D-Turanoseh v +* + v
Xylose -* v
Utilization of:        
Citrate - n/d
Formate     n/d   
Lactate     n/d   
Hydrolysis of        
Casein - v n/d v
Esculin + + + + v n/d v
Gelating + n/d +
Starchg   + n/d +
Nitrate reduction + + + + + n/d v
Phenylalanine deamination n/d n/d n/d
L-Pyroglutamic acidh + v n/d n/d n/d
p-Nitrophenyl-β-D-glucosideg + + v n/d n/d n/d
  1. aAbbreviations are as follows: v, variable; w, weak reaction; n/d, not described
  2. bData from this present study and Burgess et al. [54]
  3. cData from Flint et al. [10] and Burgess et al. [54]
  4. dData from this present study (marked as *), Baldock [95], Humbert et al. [96] and Jung et al. [97]
  5. eData from this present study (marked as *), Walker and Wolf [98], Logan and Berkeley [99] and Flint et al. [10]
  6. fAs described by Logan et al. [70]
  7. gPhenotypic characteristic that is variable between the dairy strains
  8. hPhenotypic characteristic that is different between the dairy strains and that described for the G. stearothermophilus species
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