Why some bacteria are acid fast?

The acid-fastness of Mycobacteria is due to the high mycolic acid content of their cell walls, which is responsible for the staining pattern of poor absorption followed by high retention. Some bacteria may also be partially acid-fast, such as Nocardia.Click to see full answer. Likewise, what makes a bacteria acid fast?Acid-fast bacteria are gram-positive, but in addition to peptidoglycan, the outer membrane or envelope of the acid-fast cell wall of contains large amounts of glycolipids, especially mycolic acids that in the genus Mycobacterium, make up approximately 60% of the acid-fast cell wall.Beside above, why is it important to study acid fast bacteria? And, this is consistent because acid fast bacteria have a waxy coat on their cell wall, neither crystal violet nor counterstain (safranin) can penetrate the waxy layer. Therefore, they will not be visible. Also know, what are examples of acid fast bacteria? Two examples of acid fast bacteria are Mycobacterium tuberculosis and Mycobacterium leprae. Mycobacterium tuberculosis causes the respiratory disease tuberculosis and Mycobacterium leprae causes the disfiguring disease leprosy.What is chemically unique about the Mycobacterium genus that causes it to be acid fast?Acid-fast bacteria, of which there are very few—the major genus Mycobacterium, have a high concentration of mycolic acid, a lipid, in their walls. The ability of the bacteria to resist decolorization with acid (1%) alcohol confers acid -fastness to the bacterium.

Leave a Reply

Your email address will not be published. Required fields are marked *