Bacteria are microscopic and unicellular organism that are present everywhere around us. The air we breathe, in the soil, the water we drink, and anywhere and everywhere we live. Most importantly, bacteria are also present in the body of other living organism including human.
The term ‘Bacteria’ was first coined by F.J. Cohn in 1854 but the scientist who discovered it was Anton Van Leeuwenhoek. Bacteria are generally known as the causative agent for different types of diseases.
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But not all the bacteria that are present in nature are the medium for transmission of different diseases. Rather there are many good bacteria that are helpful bacteria for the survival of human on the earth. Some of these types of good bacteria and helpful bacteria are present in our food whereas other helpful bacteria are already there surviving inside our system. Following is the list of 5 helpful bacteria out of the many various types of good bacteria.
Lactobacillus is a gram positive, rod shaped bacteria that is present in dairy food products and different parts of human body. Lactobacillus acidophilus bacteria is also termed as “friendly bacteria” since it is a good bacteria helpful in treatment of many diseases in human. L. acidophilus uses lactose to produce lactic acid, which is a metabolic byproduct; thus serving in the process of fermentation. Other useful benefits of this Lactobacillus bacteria are:
Bifidobacterium animalis is a gram- positive bacteria that is branched and rod-shaped. B.animalis is also lactic acid bacteria, present in the gut of animals and humans. Hence, the production of lactic acid creates acidic environment in the intestine that inhibit the growth of any microorganism. Moreover, Bifidobacterium also aids in the proper digestion of food. It can be taken orally in the form of medicine to treat different diseases such as diarrhea, bowel infections etc.
Cyanobacteria are gram- negative, rod shaped bacteria that are generally found in water. Cyanobacteria are photosynthetic bacteria that can prepare their own food. These Cyanobacteria help to fix the atmospheric nitrogen thus converting it in the useable form for the plants. Beside this, Cyanobacteria are also the source of nitrogen fertilizer for different crops used by humans. Hence, Cyanobacteria are important for the proper growth of the plants. Since, cyanobacteria are present in water and they are photosynthetic in nature, a term called blue-green algae is used to designate these bacteria. Moreover, they help to maintain balance in the ecosystem.
Lactobacillus reuteri is also a major lactic acid bacteria that is found in gut of humans, birds and other mammals. The presence of L. reuteri serves number of benefit in human body. Some of the helpful uses of Lactobacillus reuteri include treatment of diarrhea, prevention of infection, reduction any gastrointestinal problems, etc. Moreover, this bacteria is also present in the breast of feeding mother and most of the dietary products. image Reference:- http://celiomendes-saude.blogspot.in/2014/03/cultura-de-lactobacillus-reuteri.html
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E.coli also known as Escherichia coli is one of the most common bacteria that is beneficial as well as harmful. It is gram- negative bacteria that is rod in shape. Most of the beneficial strain of E.coli is present in the small and large intestine of mammals that aids in different ways:
But undoubtedly, there are other strains of this bacteria that are responsible for different types of diseases like diarrhea, dysentery or kidney failure. Hence, E.coli within our body is generally useful but when the harmful strain enters from the environment, it can affect the body in different ways.
This is the list of helpful bacteria that are types of good bacteria for humans. Some helpful bacteria stay within our system and benefit through absorption, digestion and excretion of waste whereas other types of good bacteria are present in the external environment to maintain the balance in the ecosystem.
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