Gluconobacter

Gluconobacter
Scientific classification
Kingdom:	Bacteria
Class:	Alphaproteobacteria
Order:	Rhodospirillales
Family:	Acetobacteraceae
Genus:	Gluconobacter

Gluconobacter is a genus of bacteria in the acetic acid bacteria family. They prefer sugar-rich environments, so are sometimes found as a spoilage organism in beer. They are not known to be pathogenic but can cause rot in apples and pears.

A number of species are in the genus, such as:

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Wikipedia