| Leuconostoc mesenteroides
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Correct name: Leuconostoc mesenteroides subsp. mesenteroides.
Pinpoint, semitransparent colonies. This culture has been incubated at 25°C.
The picture below shows growth of L. mesenteroides on agar containing 5% sucrose with production of dextran.
Click on the picture to see an enlarged version. |
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The same Blood Agar plate examined with transmitted light. There is a narrow green zone around the colonies. This 'greening' is caused by the accumulation of hydrogen peroxide converting the haemoglobin to methaemoglobin in the agar.
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| General characteristics: Gram-positive cocci. Catalase-negative. Attacks sugars fermentatively and gas i produced. Microaerophilic. Non-motile. |
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