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Pediococcus

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Members of the genusPediococcus are Gram-positive cocci that produce lactic acid as their primary byproduct of carbohydrate metabolism. Normally associated with plants, some species are important in silage fermentation and vegetable fermentations. Some species are responsible for beer spoilage, and can be resistant to the antimicrobial compounds found in hops.

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Erika Pfeiler
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Pediococcus

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Pediococcus is a genus of gram-positive lactic acid bacteria, placed within the family of Lactobacillaceae. They usually occur in pairs or tetrads, and divide along two planes of symmetry,[2] as do the other lactic acid cocci genera Aerococcus and Tetragenococcus. They are purely homofermentative. Pediococcus dextrinicus has recently been reassigned to the genus Lapidilactobacillus.[3][4]

Food processing

Pediococcus is, along with other lactic acid bacteria such as Leuconostoc and Lactobacillus, responsible for the fermentation of cabbage, making it sauerkraut. In this process, the sugars in fresh cabbage are fermented to lactic acid, which gives sauerkraut a sour flavour and good keeping qualities. Pediococcus bacteria are usually considered contaminants of beer and wine,[2] although their presence is sometimes desired in beer styles such as lambic and Berliner Weisse.[5] Certain Pediococcus isolates produce diacetyl which gives a buttery or butterscotch aroma to some wines (such as Chardonnay) and a few styles of beer. Pediococcus species are often used in silage inoculants. Pediococci are used as probiotics, and are commonly added as beneficial microbes in the creation of sausages, cheeses and yogurts.

Species

The genus Pediococcus comprises the following species:[6]

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature[6] and the phylogeny is based on whole-genome sequences.[4]

Pediococcus      

Pediococcus claussenii

   

Pediococcus argentinicus

       

Pediococcus acidilactici

     

Pediococcus pentosaceus

   

Pediococcus stilesii

             

Pediococcus damnosus

   

Pediococcus inopinatus

       

Pediococcus cellicola

     

Pediococcus ethanolidurans

   

Pediococcus parvulus

          outgroup

Furfurilactobacillus

   

References

  1. ^ Claussen NH (1903). "Études sur les bactéries dites sarcines et sur les maladies qu'elles provoquent dans la bière" [Studies on so-called sarcine bacteria and the maladies they cause in beer]. Compte Rendus des Travaux du Laboratoire de Carlsberg. 6: 64–83.
  2. ^ a b Raccach, Mosche (1 January 2014). "Pediococcus". Encyclopedia of Food Microbiology. Academic Press. Second Edition: 1–5. doi:10.1016/B978-0-12-384730-0.00247-0. ISBN 9780123847331. Retrieved 12 January 2021.
  3. ^ Haakensen, M; Dobson, CM; Hill, JE; Ziola, B (2009). "Reclassification of Pediococcus dextrinicus (Coster and White 1964) Back 1978 (Approved Lists 1980) as Lactobacillus dextrinicus comb. nov., and emended description of the genus Lactobacillus". International Journal of Systematic and Evolutionary Microbiology. 59 (Pt 3): 615–21. doi:10.1099/ijs.0.65779-0. PMID 19244449.
  4. ^ a b Zheng J, Wittouck S, Salvetti E, Franz CMAP, Harris HMB, Mattarelli P, O'Toole PW, Pot B, Vandamme P, Walter J, Watanabe K, Wuyts S, Felis GE, Gänzle MG, Lebeer S. (2020). "A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae". Int J Syst Evol Microbiol. 70 (4): 2782–2858. doi:10.1099/ijsem.0.004107. PMID 32293557.
  5. ^ Vidergar, Cyril (18 November 2020). "Beer becomes food in sour ales". timescall.com. MediaNews Group, Inc. Archived from the original on 2020-11-18. Retrieved 12 January 2021.
  6. ^ a b Euzéby JP, Parte AC. "Pediococcus". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved July 2, 2021.
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Pediococcus: Brief Summary

provided by wikipedia EN

Pediococcus is a genus of gram-positive lactic acid bacteria, placed within the family of Lactobacillaceae. They usually occur in pairs or tetrads, and divide along two planes of symmetry, as do the other lactic acid cocci genera Aerococcus and Tetragenococcus. They are purely homofermentative. Pediococcus dextrinicus has recently been reassigned to the genus Lapidilactobacillus.

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