Caprylic acid, a carboxylic acid with a 8 carbon chain, is a saturated fatty acid since no double bond is present in the aliphatic chain, so in shorthand is named 8:0.
It is a member of the sub-group called medium chain fatty acids or MCFAs, namely, fatty acids containg from 6 to 12 carbon atoms.
It is named from from the Latin word caper, meaning goat.
Molecular weight: 144.21144 g/mol
Molecular formula: C8H16O2
IUPAC name: octanoic acid
In purified form it is a colorless oily liquid very slightly soluble in water, with melting point at 16.7 °C (62.06 °F; 289.85 K) and boiling point at 239.7 °C (463.46 °F; 512.85 K) at 760 mmHg.
Food sources of caprylic acid
It occurs as glycerol ester in animal fats like those present in butter and milk (in the latter from 1 to 4% of the fats) and in coconut and palm oil (6 to 8%).
It has a slightly unpleasant rancid taste in the free form.
- Akoh C.C. and Min D.B. “Food lipids: chemistry, nutrition, and biotechnology” 3th ed. 2008
- Chow Ching K. “Fatty acids in foods and their health implication” 3th ed. 2008