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O. oeni.jpg
Scientific classification
Kingdom: Bacteria
Division: Firmicutes
Class: Bacilli
Order: Lactobacillales
Family: Leuconostocaceae
Genus: Oenococcus
Dicks et al. 1995

O. alcoholitolerans[1]
O. oeni
O. kitaharae

Oenococcus is a genus of Gram-positive bacteria, placed within the family Leuconostocaceae. The only species in the genus was Oenococcus oeni (which was known as Leuconostoc oeni until 1995). In 2006, the species Oenococcus kitaharae was identified. As its name implies, Oenococcus oeni holds major importance in the field of oenology, where it is the primary bacterium involved in completing the malolactic fermentation.[2]


  1. ^ LPSN bacterio.net
  2. ^ Kunkee, R. E. 1973. Malo-Lactic Fermentation and Winemaking. In, The Chemistry of Winemaking, Adv. Chem. Ser. 137, A. D. Webb, Ed. American Chemical Society. Washington DC.