The metabolism of flavonoids in the human body is a complex and delicate biochemical process involving the synergistic action of multiple organs and systems. The following is an overview of how flavonoids are metabolized in the human body:<\/p>\n\n\n\n
1. Absorption stage<\/p>\n\n\n\n
Flavonoids are mainly absorbed through the intestine. They bind to transporter proteins on the surface of intestinal epithelial cells and thus enter the intestinal epithelium. When administered orally, the duodenum, jejunum, ileum and colon are the main sites of absorption of flavonoids. In the intestinal tract, flavonoids may undergo microbial hydrolysis and fermentation processes to produce metabolites before being absorbed.<\/p>\n\n\n\n
2. Liver metabolism<\/p>\n\n\n\n
Flavonoids absorbed into the blood circulation will be transported to the liver for further metabolism. The liver is the main place for flavonoid metabolism, in which the enzyme system is responsible for hydrolysis, oxidation, methylation, sulfation, etc. of flavonoids to generate a variety of metabolites. These metabolites have different biological activities and physiological effects.<\/p>\n\n\n\n
3. Intestinal and hepatic circulation<\/p>\n\n\n\n
Some flavonoids will be excreted to the duodenum with bile after metabolized by the liver, and then reabsorbed after undergoing the enzyme action of intestinal microorganisms, which is called \u201centerohepatic cycle\u201d. This process is called \u201centerohepatic cycle\u201d. Through the enterohepatic cycle, flavonoids can be metabolized and utilized many times in the body.<\/p>\n\n\n\n
4. Excretion stage<\/p>\n\n\n\n
After hepatic metabolism and enterohepatic circulation, flavonoids and their metabolites will eventually be excreted through the kidneys or intestines. The kidneys are the main pathway for the excretion of flavonoids, and the metabolites are eliminated from the body through urine. At the same time, some of the metabolites may also be excreted through the intestines in the form of feces.<\/p>\n\n\n\n
5. Metabolic differences and influencing factors<\/p>\n\n\n\n
The metabolism of flavonoids in the human body is subject to individual differences, which are influenced by a variety of factors, including genes, age, gender, medications, dietary habits (e.g., intake of alcohol, dietary fiber, and fat), and the properties of the flavonoids themselves. As a result, the types and amounts of metabolites may vary significantly between individuals who consume the same dose of flavonoids.<\/p>\n","protected":false},"excerpt":{"rendered":"
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