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Morphology of Nitrosomonas

In 1960,M.S ENGEL described in his aricle "Morphology of Nitrosomonas Europaea and Classification of the Nitriyfing Bacteria" Nitrosomonas europaea and compared it to Nitrosomonas monocella. Nitrosomonas Europaea is a rod, forming small, sharply defined brown colonies on solid media.Based on the description of Bergey's Manual N.monocella is an ovoid with yellowish brown, irregular colonies in silica gel. M.S ENGEL also found out  that the criteria of size and shape are not valid to differ these two species. Nitrosomonas have a fine structure and there are three basic morphological types of Nitrosomonas species were founed (W. WATSON AND MANDEL,1971) which are: short rods Nitrosomonas, Rods Nitrosomonas and Nitrosomonas with pointed ends. Cells of Nitrosomonas species have a polyhedral inclusion bodies which are present in both growing and resting cells.These bodies are located in the nucleo-plasm (WULLENWEBER et al, 1977).

Healh/medical benefits of Nitrosomonas species

Nitrosomonas europha N.eutropha is a non-pathogenic bacteria which has been studied in connection with the probiotic therapies. This ammonia‐oxidizing bacteria (AOB) may have aesthetic benefits in terms of reducing the appearance of wrinkles (Notay et al., 2019). To determine the effectiveness of the probiotic product, Kramer, Shelli (2016) studied Nitrosomonas eutropha to explore why this highly mobile bactreruim have became extint from the normal flora of our skin. Probiotics are defined as live microorganisms that when administered in adequate amounts may confer a health benefit on the host (FAO,2020) This study is in connection with the idea of having benefits through the repopulation and reintroduction of Nitrosomonas eutropha to the normal flora of human skin.

The characteristics of Nitrosomonas eutropha according to Kramer, Shelli (2016): N.eutropha is a motile, gram-negative, bacillus which grows optimally in an acid and dark environment at 23°C. It is a chemolithoautotroph and has the ability to change pigmentation depending on the environment. The inorganic compound used by N.eutropha to power its metabolism is ammonia.