What does triolein mean?
Triolein is a triglyceride, or neutral fat, made by joining one glycerol molecule to three oleic-acid molecules. Chemically, it is also called glyceryl trioleate and has the molecular formula C57H104O6. The compound occurs naturally in fats and oils, including olive oil, and is studied in fields ranging from nutrition and food chemistry to pharmaceuticals and lipid research. Triolein can form emulsions and is used as a carrier or excipient in some formulations, including products designed to deliver oils or other poorly water-soluble substances. Because it is a technical name rather than a everyday term, it is most often encountered in scientific, industrial, or academic writing. Its name reflects its chemical construction: the prefix tri- indicates three oleic-acid-derived components, while the ending relates to olein, the traditional name for oleic-acid glycerides. Knowing triolein helps explain how familiar oils are chemically composed and how individual triglycerides contribute to the texture, stability, and biological behavior of fats.
nounTriolein is the triglyceride formed by combining glycerol with three molecules of oleic acid. It is also known chemically as glyceryl trioleate.
- A neutral triglyceride formed from glycerol and three molecules of oleic acid, occurring as a component of fats and oils.
"The researchers analyzed the triolein content of several olive-oil samples."
"Triolein is one of the triglycerides present in olive oil."
"The formulation used a triolein emulsion to encapsulate the active compound."
The plural is rare and appears mainly in scientific or analytical writing.
"The technique separated the trioleins from the other triglycerides in the sample."
Triolein is essentially three oleic-acid molecules locked together with one glycerol molecule—a tiny lipid assembled from the same fatty acid found abundantly in olive oil.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does triolein come from?
The name triolein combines the prefix tri-, meaning “three,” with olein, the traditional term associated with the glycerides of oleic acid. Its development belongs to the systematic chemical nomenclature of the nineteenth century, when triglycerides were increasingly described according to the fatty acids they contained. The related terms oleic acid and oleate likewise derive from the same oleic-acid root.
How triolein is actually used
This is a specialized term used in chemistry, biochemistry, nutrition, and food science. It is uncommon in general conversation.
Easily confused with triolein
Triolein is the neutral triglyceride formed from glycerol and three oleic-acid molecules, whereas trioleate can refer more broadly to an oleate salt or the oleate ion.