Conjugated fatty acids
Abbreviations
- CFA
- CLA (for Conjugated Linoleic Acid)
Synonyms
- Conjugated fats
Description
Represents polyunsaturated fatty acids in which at least one pair of double bonds is separated by only one single bond (a conjugated diene/triene system), rather than the typical methylene group. The most well-known and widely studied is conjugated linoleic acid (CLA, C18:2).
Nutritional potential:
CFAs, particularly CLAs, are primarily found in the meat and dairy products of ruminant animals. They have been extensively studied for their potential health benefits, which include anti-carcinogenic properties, immune system modulation, and the ability to improve body composition by reducing adiposity and increasing lean muscle mass (though human clinical results are sometimes mixed compared to animal models).
Biodiesel potential:
The presence of conjugated double bonds makes these fatty acids highly reactive. In fuel applications, this is generally highly undesirable. While they may offer acceptable cold flow properties, conjugated fatty acids are extremely susceptible to rapid oxidation, polymerization, and gum formation (very poor oxidation stability, OS). This can lead to severe engine deposits and fuel filter clogging. Feedstocks rich in conjugated fatty acids (e.g., tung oil) are typically avoided for standard biodiesel production.