“…In the acetic acid bacteria, especially in strains assigned to the genus Acetobacter Beijerinck 1898, 215 AL (Cleenwerck et al, 2002;Lisdiyanti et al, 2000Lisdiyanti et al, , 2001, finding of the phenotypic characteristics that precisely differentiate strains at the species level is quite difficult, because of the poverty of the phenotypic characteristics. However, the present study demonstrated that the two strains, NBRC 3250 T and 3273, were differentiated phenotypically from the type strains of the three known Gluconobacter species (Table 2): the two strains were discriminated from G. oxydans T .…”