Good Bacteria

There are many differents ways to identify a bacterial unknown and many different situations where identification would be beneficial. One way to identify bacterial unknowns is to perform biochemical tests. In this experiment multiple biochemical tests were done, by performing these tests on the bacterial unknown received the two different bacteria were then identified. The citrate test is done to test the ability of organisms to use citrate as a carbon source. This test uses Simmons citrate agar, the agar contains sodium citrate as the only carbon source and has bromothymol blue as the pH indicator. The organisms that use citrate as a carbon source use the enzyme to transport the citrate into the cell. The cells converts ammonium dihydrogen

If you have had recurrent infections and taken antibiotics repeatedly to treat them, you may need to repair your gut. Your gut contains around 70 percent of the immune cells active in your body at any given time, and gut flora play a role in your immune function. Antibiotics kill not only bad bacteria, but also good ones. Probiotics can help your gut recover from the abuse so your immune function can recover from having taken

Dietary fiber is a source of carbohydrate that has benefits for intestinal health. It plays a role in the prevention of disease in the intestine and even throughout the body, such as obesity, type II diabetes, and cardiovascular disease (10). Furthermore, when the bacteria in the gut ferment the fiber, metabolites are produced, which benefit the body. Short chain fatty acids are one major end product of this carbohydrate metabolism, which act to lower the colon’s pH, inhibiting pathogenic bacteria from growing. Some other metabolites include lactate, succinate and formate. Lactate is converted to butyrate by the bacteria in the gut, which induces mucin synthesis, which is a glycoprotein that maintains the gut epithelium integrity. Butyrate also acts to prevent bacterial transport across the epithelium and increases tight junction assembly (11). What this means, is that the fermentation of fiber allows these beneficial metabolites to be produced, causing a cascade of reactions that promote health and gut integrity. This shows the complex beneficial interaction between gut microbiota and fiber intake and its role in promoting health.

Often scientists work with bacteria that do not come in a labeled test tube— for example, bacterial samples taken from infected human tissue or from the soil—and the scientist must then identify the unknown microorganism in order to understand what behavior to expect from the organism, for example, a certain type of infection or antibiotic resistance. However, because of the relatively few forms of bacteria compared to animals and because of the lack of bacterial fossil records due to their asexually reproductive nature, the taxonomy used to classify animals cannot be applied to bacteria (Brown 275). In order to classify unknown bacteria, a variety of physiological and metabolic tests are available to narrow a sample down from the fathomless number of possibilities into a more manageable range. Once these tests have been performed, the researcher can consult Bergey’s Manual of Determinative Bacteriology, a systematically arranged and continually updated collection of all known bacteria based on their structure, metabolism, and other attributes.

* There exists a highly adapted range of bacteria present in the human gut that are inherited maternally.

761). Since the nutrients in the intestines are available due to the good bacteria being destroyed, Clostridium difficile uses the nutrients to multiply and releases the toxins , which attack the lining of the intestines, thus causing colitis (Fordtran, 2006, pp. 3).

The sheer diversity of the microbiota means that bodily disorders associated with the gut region (encompassing the stomach and intestines) are difficult to diagnose, and even harder to find the source of the disorder. Intestinal Bowel Disease (IBD) is a large category of bodily disorders associated with the gut. IBD most commonly manifests itself in two forms – Crohn’s Disease, and Ulcerative Colitis [1]. Crohn’s disease is arguably a more severe form of the disease, as the diseased tissue tends to go deeper into the intestines. Ulcerative Colitis, while still very detrimental and pain causing, causes inflammation of tissue at more of the surface level. The diseases affects a significant portion of the population, with a high rate of new cases discovered - between 20,000 and 100,000 people are diagnosed with types of IBD annually in North America [1]. The role of the microbiota in inducing intestinal diseases has been suspected.

These are some of the proposed functions of our microbiome. First of all, scientists have known for years that gut bacteria break down certain components of good that would otherwise be indigestible and would pass out of the body unused. In addition, Bacteroides thetaiotaomicron breaks down carbohydrate, also capable of breaking down the large, complex carbohydrates found in plant. It also has genes that code for more than 260 enzymes capable of digesting plant matter. Helicobacter Pylori is a disease-causing bacterium, however, H. pylori benefits the body by helping to regulate levels of stomach acids, thus creating an environment that suits itself and it host, and surprisingly, plays a role in regulating two hormones in appetite (ghrelin). This function greatly help most children in the U.S. to prevent overproduction of fat cells. Sadly, many children are exposed to antibiotic treatments, has caused alterations in the compositions of their intestinal microbiome. This caused the rising of childhood obesity, and overproduction of

There are major effects in the United States and Europe to help identify the role of microbial communities in the human body. The colon requires a balance of microbial agents that assist with various functions of the body. An imbalance can lead to C.diff., irritable bowel disease (IBD), irritable bowel syndrome (IBS), neurological disorders, and obesity just to list a few. Many of these problems have grown to an epidemic proportion. Both the United States and Europe have started projects aimed at the microbial communities of the body and their roles in our health.

Prokaryotes are ubiquitous, successfully adapting to diverse environments as well as developing symbiotic relationships with host organisms (Lengeler, Drews, & Schlegel, 1999). Prokaryotes may have both autotrophic and heterotrophic characteristics. A cyanobacteria is photosynthetic, commonly called blue-green algae, and may produce toxins (Crayton, 1993). Bacteria are most commonly associated in the general

The bacteria produce a number of products including urease and vacuolating cytotoxin (VacA). VacA damages endosomal and lysosomal membranes and leads to cell death. Urease helps increase the environmental pH to become less

The identification of bacteria is a fundamental objective of microbiologists. It is essential to distinguish specific bacterial properties to understand the environment, physiology and disease. As new bacterial species emerge and existing ones evolve into different strains, it is imperative that microbiologists continue to isolate bacteria from the field, identify their findings and research newly discovered forms. Their discoveries can then be used to evaluate the types of microbial life that may be found in certain environments and the corresponding benefits or risks to those that dwell in those areas.

The good gut microbes are a powerful line of defense against pathogens and germs and also prevent the overgrowth of harmful microbes such as bacteria, yeasts and parasites, making healthy bacteria vital for a strong immune system.

This mechanism of diversity caused by many flora inside the digestive track of humans are beneficial because it helps with the digestion of a more diverse product. Even if the probiotic does not help with digestion some other