Fart, everyone will put it, but some people will put it a little more and stink. Farting is closely related to diet. Sometimes people will fart easily after eating some food, such as sweet potatoes. It has a lot to do with intestinal digestion.
Fart is the intestinal gas discharged from the body after being produced by human metabolism. There are two main sources of intestinal gas: one is the gas swallowed into the body intentionally or unintentionally; One is the gas produced by intestinal bacteria (mainly colon bacteria) to metabolize and decompose undigested sugars and other nutrients. The gas swallowed is consistent with the composition of air, mainly nitrogen and oxygen, and a small amount of other gases. After the gas is swallowed into the gastric cavity, most of it is discharged from the body through belching, and part of the oxygen not discharged from the body can diffuse into the blood. Most of the nitrogen not discharged is transmitted to the small intestine and colon through intestinal movement, and is discharged out of the body through "farting". In the colon, colonic bacteria decompose undigested sugars and other nutrients, which can produce hydrogen, methane, oxygen, carbon dioxide, hydrogen sulfide and other small amounts of sulfur-containing gases. These gases can diffuse into the blood, and hydrogen and oxygen can also be used by intestinal bacteria. But most of the gas produced by bacteria, together with the nitrogen swallowed, will be discharged from the body through "farting".
The main components of fart are nitrogen, oxygen, carbon dioxide, hydrogen and methane. Hydrogen sulfide and other sulfur-containing gases account for a small amount, but it is the reason for the odor of "fart". Carbon dioxide is produced by fermentation of sugars, fats and proteins. Methane in the gut is also the result of bacteria decomposing sugars. In "fart", the gas produced by intestinal bacteria accounts for about 70%. The composition of "fart" varies greatly between different individuals and at different times of the same individual. The gas produced by intestinal bacteria is mainly affected by the situation of digestive enzymes in the intestine, the type of diet, colonic transport time and the proliferation of intestinal bacteria.
Sweet potato is a kind of starch food. After digestion, starch is easy to produce gas in the gastrointestinal tract. Some oxidase contained in sweet potato is also easy to catalyze the chemical reaction that produces a large amount of carbon dioxide gas. Therefore, if you eat too much sweet potato, you will have abdominal distension, hiccup and fart.