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27271B

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Image #   27271B
Name:   Lactobacillus acidophilus - Gram-positive, rod prokaryote (bacterium)
Copyright:   Copyright 2007 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Lactobacillus acidophilus - Gram-positive, rod prokaryote (bacterium). It ferments only lactose into lactic acid (a homofermentative microorganism). As a result of producing lactic acid this bacterium thrives in more acidic environments than most related microorganisms (pH 4-5 or lower) and grows best at 45 degrees Celsius. L. acidophilus has a surface protein layer which allows them to adhere to mucous membrane cells. It occurs naturally in the human (and animal) intestine, mouth, and vagina. The acid environment it lives in inhibits the growth of many other bacterial forms and therefore protects the vagina from pathogenic infection.L. acidophilus also produces lactase, the enzyme that breaks down milk sugar (lactose) into simple sugars. People who are lactose intolerant do not produce this enzyme. For this reason, L. acidophilus supplements may be beneficial for these individuals. It is the most commonly used probiotic and is used to produce acidophilus milk. L. acidophilus also produces bacteriocins against pathogenic food borne bacteria. In some countries it is used commercially together with Streptococcus salivarius and Lactobacillus delbrueckii ssp. bulgaricus in the production of acidophilus-type yogurt.
Magnification*: x3,000
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   27271B bacteria bacterium rod rod-shaped milk industry yogurt production acid-loving Lactobacillus acidophilus Lactobacillus 07.01.07 bacterial bacillus baccilli rod shaped rods food borne food borne bacteria protein surface layer Gram-positive Gram positive bacteriology microbiology micro-organisms micro-organism microorganism microorganims food microbe food microbes beneficial food bacteria beneficial food bacterium microbe microbes probiotic bacteria probiotic bacterium probiotic probiotics SEM yogurt yoghurt fermenting ferment fermentation bacteria in yogurt bacterium in yogurt lactic acid bacteria lactic acid bacterium LAB lactic acid milk coagulation milk fermenting bacteria fermenting bacterium bacterial fermentation bacteria fermentation lactose prokaryote prokaryotes homofermentative fermented dairy food fermented dairy foods dairy food dairy foods lactose intolerance acidophilus milk lactose intolerant acid-tolerant acidic environments acid environments acidic environment extremophile extreme environment extremophiles extremophilic enteric enteric bacterium enteric bacteria Streptococcus salivarius Lactobacillus delbrueckii bacteriocins vagina bacterium vagina bacteria intestine bacterium intestine bacteria mouth bacterium oral bacterium oral bacteria lactase bacteriocin probiotic supplement probiotic supplements intestine flora biofilm intestinal bacterium intestinal bacteria food spoilage

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