What is produced by bacteria in the colon when they ferment dietary fiber?

What is produced by bacteria in the colon when they ferment dietary fiber?

• A. Short chain fatty acids
• B. Amino acids
• C. Gases
• D. Proteins

Answer: (A)

Bacteria in the colon fermenting dietary fiber mainly produce short-chain fatty acids (SCFAs) such as acetate, propionate, and butyrate. These SCFAs provide an energy source for colonocytes, help maintain the gut lining, and influence immune and metabolic functions. Gas can be a byproduct of fermentation, but the key outcome from fiber fermentation is the formation of SCFAs. Amino acids or proteins are not produced from fiber fermentation; those arise from protein fermentation, which yields different and often less desirable compounds.

Bacteria in the colon fermenting dietary fiber mainly produce short-chain fatty acids (SCFAs) such as acetate, propionate, and butyrate. These SCFAs provide an energy source for colonocytes, help maintain the gut lining, and influence immune and metabolic functions. Gas can be a byproduct of fermentation, but the key outcome from fiber fermentation is the formation of SCFAs. Amino acids or proteins are not produced from fiber fermentation; those arise from protein fermentation, which yields different and often less desirable compounds.