Capric acid (also known as Decanoic acid) is a medium-chain fatty acid (=MCFA) abundant in tropical oils such as coconut oil, whereas small amounts are present in milk of goat, cow, and human. The MCFAs are virtually nonexistent in meats because animals oxidize them very rapidly from plants consumed, and do not accumulate in the tissues.

Fatty acids are classified as short-, medium-, or long-chain fatty acids.

– short chain fatty acids (SCFA) contain fewer than six carbons

– medium-chain fatty acids (MCFAs) contain six to 12 carbons

– and long-chain fatty acids (LCFAs) contain more than 12 carbons

In human tissues, capric, lauric, and myristic acids are oxidized by peroxisomal oxidative pathways to a larger extent than the longer chain fatty acids.

Peroxisomes are subunits within a cell that have a specific function. They are present in all human cells except mature erythrocytes. They carry out essential metabolic functions including beta-oxidation (=the process by which fatty acid molecules are broken down).

References:

– Plasma capric acid concentrations in healthy subjects determined by high-performance liquid chromatography. [L]

– Comprehensive Profiling of Plasma Fatty Acid Concentrations in Young Healthy Canadian Adults [L]

– Dietary Medium Chain Fatty Acid Supplementation Leads to Reduced VLDL Lipolysis and Uptake Rates in Comparison to Linoleic Acid Supplementation [L]

– Effects of medium-chain fatty acids and oleic acid on blood lipids, lipoproteins, glucose, insulin, and lipid transfer protein activities. [L]

– Medium-chain fatty acids: Functional lipids for the prevention and treatment of the metabolic syndrome [L]

– Seizure control by decanoic acid through direct AMPA receptor inhibition [L]

– Altered plasma levels of decanoic acid in colorectal cancer as a new diagnostic biomarker [L]