Short-chain fatty acid
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Short-chain fatty acids are a sub-group of fatty acids with aliphatic tails of less than six [1] carbons. They include:
- Acetic acid
- Propionic acid
- Isobutyric acid (2-methylpropanoic acid)
- Butyric acid
- Isovaleric acid (3-methylbutanoic acid)
- Valeric acid (pentanoic acid)
- Caproic acid (hexanoic acid)
Short-chain fatty acids, just as medium-chain fatty acids, are taken up directly to the portal vein during lipid digestion, in contrast to long-chain fatty acids, which are packed into chylomicrons and enter lymphatic capillaries and enter the blood first at the subclavian vein.
Short-chain fatty acids are produced when dietary fiber is fermented in the colon.
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