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Most aerotolerant anaerobes have superoxide dismutase and (non-catalase) peroxidase but do not have catalase. [1] More specifically, they may use a NADH oxidase/NADH peroxidase (NOX/NPR) system or a glutathione peroxidase system. [2] An example of an aerotolerant anaerobe is Cutibacterium acnes. [3]
Lactobacillus is a genus of gram-positive, aerotolerant anaerobes or microaerophilic, rod-shaped, non-spore-forming bacteria. [2] [3] Until 2020, the genus Lactobacillus comprised over 260 phylogenetically, ecologically, and metabolically diverse species; a taxonomic revision of the genus assigned lactobacilli to 25 genera (see § Taxonomy below).
Lactiplantibacillus plantarum (formerly Lactobacillus arabinosus and Lactobacillus plantarum) [3] is a widespread member of the genus Lactiplantibacillus and commonly found in many fermented food products as well as anaerobic plant matter. [4] L. plantarum was first isolated from saliva. Based on its ability to temporarily persist in plants ...
5: Aerotolerant organisms do not require oxygen as they metabolise energy anaerobically. Unlike obligate anaerobes however, they are not poisoned by oxygen. They can be found evenly spread throughout the test tube. An obligate aerobe is an organism that requires oxygen to grow. [1]
An anaerobic organism or anaerobe is any organism that does not require molecular oxygen for growth. It may react negatively or even die if free oxygen is present. In contrast, an aerobic organism (aerobe) is an organism that requires an oxygenated environment. Anaerobes may be unicellular (e.g. protozoans, [1] bacteria [2]) or multicellular. [3]
Aerotolerant anaerobes do not use oxygen but are not harmed by it. [6] When an organism is able to survive in both oxygen and anaerobic environments, the use of the Pasteur effect can distinguish between facultative anaerobes and aerotolerant organisms. If the organism is using fermentation in an anaerobic environment, the addition of oxygen ...
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These three genera are non-spore-forming, round or elongated in shape, and anaerobic or aerotolerant. They usually inhabit nutrient-rich environments such as milk, meat, vegetable products, and fermented drinks. [10] [11] Lactic acid is the main end product of their characteristic heterofermentative carbohydrate metabolism.