FAMILY PSEUDOMONADACEAE 



189 



13. Acetobacter capsulatum Shimwell. 

 (Jour. Inst. Brewing, 4^ (N. S. 32), 

 1936, 585.) From Latin, capsulated. 



Coccoid rods, 0.8 to 1.0 micron in malt 

 extract media. 0.6 to 1.5 microns in other 

 media. Produce ropiness in beer. Cap- 

 sulated. Motile. Gram-negative. 



Source: From ropy beer. 



14. Acetobacter gluconicum (Her- 

 mann).* (Bacterium gluconicum Her- 

 mann, Biochem. Zeit., 192, 1928, 198; 

 also see Hermann, Biochem. Zeit., 205, 

 1929, 297 and Hermann and Neuschul, 

 Biochem. Zeit., 233, 1931, 129.) 



It is unfortunate that an organism so 

 well described must be placed with other 

 species of uncertain standing. How- 

 ever, this organism is so closely related 

 to the other organisms described in the 

 literature that further study is nec- 

 essary. 



Source: From kombucha, a mixture of 

 fungi and bacteria from tea infusions. 



15. Acetobacter 

 Tosic and Walker. 

 48, 1942, 82.) 



turbidans Cosbie, 

 (Jour. Inst. Brewing, 



This beer vinegar bacterium is char- 

 acterized by the production of intense 

 turbidity in beer and ale. The descrip- 

 tion given does not, at present, warrant 

 recognition of the organism as a new 

 species. 



Source: From beer. 



16. Bacterium dihydroxyacetonicum 

 Virtanen and Biirlund. (Biochem. Zeit., 

 169, 1926, 170.) 



There is no adequate description of 

 this bacterium, and it is doubtful 

 whether it can be properly evaluated 

 since various species of Acetobacter also 

 possess the ability to produce dihydroxy- 

 acetone from glycerol. Consideration 

 of this as a nomen nudem was indicated 

 by Virtanen to ^'aughn in a personal 

 communication in 1938. 



Source: From beet juice. 



17. Acetobacter peroxydans Visser 't 

 Hooft. (Inaug. Diss., Delft, 1925, 98.) 



The exact taxonomic position of this 

 bacterium will not be clear until further 

 comparative studies have been made. 



Source: From hj'drogen peroxide solu- 

 tions. 



Genus V. Protamiaobacter den Dooren de Jong.] 



(Bijdrage tot de kennis van het mineralisatieproces. Thesis, Rotterdam, 1926, 

 159.) From AI. L., protamine and Latin, bactrum, rod. 



Cells motile or non-motile. Capable of dissimilating alkylamins. Pigmentation 

 frequent. Soil or water forms. 



The type species is Protamitiobacter alboflavum den Dooren de Jong. 



Key to the species of genus Protaminobacter. 



I. Non-motile. Gelatin colonies light yellow to colorless. 



1. Protaminobacter alboflavum. 

 II. Motile. Gelatin colonies red. 



2. Protaminobacter rubrum. 



1. Protaminobacter alboflavum den Abt., 71, 1927, 218.) From Latin albus, 

 Dooren de .Jong. (Thesis, Rotterdam, white; ^at^i/s, yellow. 

 1926, 159; also see Cent. f. Bakt., II Rods: Non-motile. Gram-negative. 



* It is uncertain at present who first used this combination. 



t Prepared by Prof. D. H. Bergey, Philadelphia, Pennsylvania, June, 1929; further 

 revision by Prof. Robert S. Breed, New York State Experiment Station, Geneva 

 New York, April, 1943. 



