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Lactobacillales es un orden de bacterias Gram-positivas, dentro de Bacilli. Géneros representativos son Enterococcus, Streptococcus, Lactococcus, Leuconostoc y Lactobacillus. Producen ácido láctico como el mayor metabolito de la fermentación del azúcar.
- Lactobacillus - Wikipedia, la enciclopedia libre
Lactobacillus. Lactobacillus es un género de bacterias...
- Lactobacillaceae - Wikipedia, la enciclopedia libre
Lactobacillaceae es una familia de bacterias del ácido...
- Lactobacillus - Wikipedia, la enciclopedia libre
- Metabolism
- Genomes
- Taxonomy
- Phylogeny
- Human Health
- Food Production
- See Also
- External Links
Lactobacilli are homofermentative, i.e. hexoses are metabolised by glycolysis to lactate as major end product, or heterofermentative, i.e. hexoses are metabolised by the Phosphoketolase pathway to lactate, CO2 and acetate or ethanol as major end products. Most lactobacilli are aerotolerant and some species respire if heme and menaquinone are presen...
The genomes of lactobacilli are highly variable, ranging in size from 1.2 to 4.9 Mb (megabases). Accordingly, the number of protein-coding genes ranges from 1,267 to about 4,758 genes (in Fructilactobacillus sanfranciscensis and Lentilactobacillus parakefiri, respectively). Even within a single species there can be substantial variation. For instan...
The genus Lactobacillus currently contains 44 species which are adapted to vertebrate hosts or to insects. In recent years, other members of the genus Lactobacillus (formerly known as the Leuconostoc branch of Lactobacillus) have been reclassified into the genera Atopobium, Carnobacterium, Weissella, Oenococcus, and Leuconostoc. The Pediococcus spe...
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclatureand the phylogeny is based on whole-genome sequences.
Vaginal tract
Lactobacillus s.s. species are considered "keystone species" in the vaginal flora of reproductive-age women. Most, but not all, healthy women have vaginal floras dominated by one of four species of Lactobacillus: L. iners, L. crispatus, L. gasseri and L. jensenii. Other women have a more diverse mix of anaerobic microorganisms.
Interactions with pathogens
Lactobacilli produce hydrogen peroxide which inhibits the growth and virulence of the fungal pathogen Candida albicans in vitro and in vivo. In vitro studies have also shown that lactobacilli reduce the pathogenicity of C. albicans through the production of organic acids and certain metabolites. Both the presence of metabolites, such as sodium butyrate, and the decrease in environmental pH caused by the organic acids reduce the growth of hyphae in C. albicans, which reduces its pathogenicity....
Probiotics
Fermentive bacteria like lactic acid bacteria (LAB) produce hydrogen peroxide which protects themselves from oxygen toxicity. The accumulation of hydrogen peroxide in growth media, and its antagonistic effects on Staphylococcus aureus and Pseudomonas, have been demonstrated by researchers. LAB cultures have been used as starter cultures to create fermented foods since the beginning of the 20th century. Elie Metchnikoffwon a Nobel prize in 1908 for his work on LAB. Lactobacilli administered in...
Lactobacilli comprise most food fermenting lactic acid bacteria and are used as starter cultures in industry for controlled fermentation in the production of wine, yogurt, cheese, sauerkraut, pickles, beer, cider, kimchi, cocoa, kefir, and other fermented foods, as well as animal feeds and the bokashi soil amendment. Lactobacillus species are domin...
Data related to Lactobacillusat WikispeciesLactobacillus at BacDive- the Bacterial Diversity Metadatabase- Bacilli
- Lactobacillus, Beijerinck 1901 (Approved Lists 1980)
Lactobacillus acidophilus o lactobacilo acidófilo, es una bacteria del género Lactobacillus. En España la legislación no permite llamar yogur a la leche fermentada con otros microorganismos que el Streptococcus thermophilus y el Lactobacillus bulgaricus, por lo que en el caso de usar Lactobacillus acidophilus para la fermentación toma la ...
De Wikipedia, la enciclopedia libre. Lactobacillales es un orden de bacterias Gram-positivas, dentro de Bacilli. Géneros representativos son Enterococcus, Streptococcus, Lactococcus, Leuconostoc y Lactobacillus. Producen ácido láctico como el mayor metabolito de la fermentación del azúcar.
The Lactobacillaceae are a family of lactic acid bacteria. [3] . It is the only family in the lactic acid bacteria which includes homofermentative and heterofermentative organisms; [4] in the Lactobacillaceae, the pathway used for hexose fermentation is a genus-specific trait.
