Lactobacillus acidophilus: Difference between revisions
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{{ | {{short description|Species of bacterium}} | ||
{{Taxobox | {{Taxobox | ||
| name = Lactobacillus acidophilus | | name = Lactobacillus acidophilus | ||
| image = | | image = Lactobacillus_acidophilus_SEM.jpg | ||
| image_caption = ''Lactobacillus acidophilus'' under a microscope | | image_caption = ''Lactobacillus acidophilus'' under a scanning electron microscope | ||
| domain = [[Bacteria]] | | domain = [[Bacteria]] | ||
| phylum = [[Bacillota]] | | phylum = [[Bacillota]] | ||
| Line 12: | Line 12: | ||
| species = '''''L. acidophilus''''' | | species = '''''L. acidophilus''''' | ||
| binomial = ''Lactobacillus acidophilus'' | | binomial = ''Lactobacillus acidophilus'' | ||
| binomial_authority = (Moro 1900) | | binomial_authority = (Moro 1900) Hansen & Mocquot 1970 | ||
}} | }} | ||
'''''Lactobacillus acidophilus''''' is a species of [[gram-positive bacteria]] in the genus ''[[Lactobacillus]]''. It is a homofermentative species, meaning it primarily produces [[lactic acid]] from the fermentation of carbohydrates. ''L. acidophilus'' is found | '''''Lactobacillus acidophilus''''' is a species of [[gram-positive bacteria]] in the genus ''[[Lactobacillus]]''. It is a [[homofermentative]] species, meaning it primarily produces [[lactic acid]] from the fermentation of carbohydrates. ''L. acidophilus'' is commonly found in the [[human microbiota]], particularly in the [[gastrointestinal tract]], [[oral cavity]], and [[vagina]]. | ||
== | ==Morphology and Physiology== | ||
''Lactobacillus acidophilus'' is a rod-shaped | ''Lactobacillus acidophilus'' is a rod-shaped bacterium that is typically 2-10 micrometers in length. It is non-spore-forming and non-motile. The bacterium grows optimally at temperatures around 37°C and at a pH of 5.5 to 6.0. ''L. acidophilus'' is an [[aerotolerant anaerobe]], meaning it can survive in the presence of oxygen but does not require it for growth. | ||
[[File:Lactobacillus_acidophilus_(259_08)_Lactobacillus_acidophilus_(Döderlein_bacillus).jpg|thumb|left|''Lactobacillus acidophilus'' (Döderlein bacillus) under a microscope]] | |||
==Role in Human Health== | ==Role in Human Health== | ||
'' | ''Lactobacillus acidophilus'' is considered a [[probiotic]], which means it can confer health benefits to the host when consumed in adequate amounts. It is often included in [[yogurt]] and other [[fermented foods]] as well as [[dietary supplements]]. | ||
===Gastrointestinal Health=== | |||
In the [[gastrointestinal tract]], ''L. acidophilus'' helps maintain a healthy balance of [[microflora]], aids in digestion, and enhances the absorption of nutrients. It can also inhibit the growth of pathogenic bacteria by producing lactic acid and other antimicrobial substances. | |||
===Vaginal Health=== | |||
''L. acidophilus'' is a key component of the normal [[vaginal microbiota]]. It helps maintain an acidic environment, which is protective against infections such as [[bacterial vaginosis]] and [[yeast infections]]. | |||
[[File:Epithelial_Tissues_Simple_Columnar_Epithelium_(41006485014).jpg|thumb|right|Simple columnar epithelium, where ''L. acidophilus'' may reside in the human body]] | |||
==Industrial and Commercial Uses== | |||
''Lactobacillus acidophilus'' is widely used in the production of [[dairy products]], such as yogurt and [[kefir]], due to its ability to ferment lactose into lactic acid, which acts as a preservative and gives these products their characteristic tangy flavor. | |||
[[File:Lactic_acid_fermentation.png|thumb|left|Diagram of lactic acid fermentation]] | |||
==Applications in Medicine== | |||
''L. acidophilus'' is used in [[probiotic]] supplements to support [[digestive health]] and [[immune function]]. It is also being studied for its potential role in preventing and treating various conditions, including [[irritable bowel syndrome]] (IBS), [[inflammatory bowel disease]] (IBD), and [[urinary tract infections]] (UTIs). | |||
[[File:Vaginal_capsule_2.jpg|thumb|right|Vaginal capsule containing ''Lactobacillus acidophilus'']] | |||
''Lactobacillus acidophilus'' | |||
==Safety and Side Effects== | ==Safety and Side Effects== | ||
'' | ''Lactobacillus acidophilus'' is generally considered safe for most people. However, individuals with weakened immune systems or underlying health conditions should consult a healthcare provider before using probiotic supplements. | ||
[[File:Katugen_002.jpg|thumb|left|Probiotic supplement containing ''Lactobacillus acidophilus'']] | |||
[[File: | |||
==Related | ==Related Pages== | ||
* [[Probiotic]] | * [[Probiotic]] | ||
* [[ | * [[Lactic acid bacteria]] | ||
* [[ | * [[Microbiota]] | ||
* [[ | * [[Fermentation]] | ||
[[Category:Lactobacillaceae]] | [[Category:Lactobacillaceae]] | ||
[[Category:Probiotics]] | [[Category:Probiotics]] | ||
[[Category:Gram-positive bacteria]] | [[Category:Gram-positive bacteria]] | ||
Latest revision as of 14:23, 21 February 2025
Species of bacterium
Lactobacillus acidophilus is a species of gram-positive bacteria in the genus Lactobacillus. It is a homofermentative species, meaning it primarily produces lactic acid from the fermentation of carbohydrates. L. acidophilus is commonly found in the human microbiota, particularly in the gastrointestinal tract, oral cavity, and vagina.
Morphology and Physiology[edit]
Lactobacillus acidophilus is a rod-shaped bacterium that is typically 2-10 micrometers in length. It is non-spore-forming and non-motile. The bacterium grows optimally at temperatures around 37°C and at a pH of 5.5 to 6.0. L. acidophilus is an aerotolerant anaerobe, meaning it can survive in the presence of oxygen but does not require it for growth.
Role in Human Health[edit]
Lactobacillus acidophilus is considered a probiotic, which means it can confer health benefits to the host when consumed in adequate amounts. It is often included in yogurt and other fermented foods as well as dietary supplements.
Gastrointestinal Health[edit]
In the gastrointestinal tract, L. acidophilus helps maintain a healthy balance of microflora, aids in digestion, and enhances the absorption of nutrients. It can also inhibit the growth of pathogenic bacteria by producing lactic acid and other antimicrobial substances.
Vaginal Health[edit]
L. acidophilus is a key component of the normal vaginal microbiota. It helps maintain an acidic environment, which is protective against infections such as bacterial vaginosis and yeast infections.
Industrial and Commercial Uses[edit]
Lactobacillus acidophilus is widely used in the production of dairy products, such as yogurt and kefir, due to its ability to ferment lactose into lactic acid, which acts as a preservative and gives these products their characteristic tangy flavor.
Applications in Medicine[edit]
L. acidophilus is used in probiotic supplements to support digestive health and immune function. It is also being studied for its potential role in preventing and treating various conditions, including irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and urinary tract infections (UTIs).
Safety and Side Effects[edit]
Lactobacillus acidophilus is generally considered safe for most people. However, individuals with weakened immune systems or underlying health conditions should consult a healthcare provider before using probiotic supplements.
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