What Is Palmitelaidic Acid (16:1 t) & What Foods Can I Find It In?

3D-model of Palmitelaidic acid (16:1 t) (src)

Palmitelaidic acid, 16:1 t, also known as 9-trans-Hexadecenoic acid. It’s the trans-isomer of palmitoleic acid 16:1.

It’s a straight-chain, monounsaturated trans fatty acid with a trans-double bond.

Palmitelaidic acid is found in a variety of food products, such as fish, egg yolks, meat, milk, and cheese.

Table of Contents

trans-Isomer of Palmitoleic Acid

Palmitelaidic acid, 16:1 t, is the trans-isomer of palmitoleic acid (16:1). Palmitelaidic acid is a monounsaturated fatty acid. (source )

Isomers are compounds that contain exactly the same number of atoms. The cis-isomer indicates that the functional groups are on the same side of the carbon chain. While the trans-isomer indicates that functional groups are on opposing sides of the carbon chain. (source )

Palmitelaidic Acid Is A Precursor Of Others

Palmitelaidic acid is a biosynthetic precursor to a variety of hormones and prostaglandins.

Palmitelaidic acid is also a precursor to the biosynthesis of conjugated linoleic acid (CLA), which is a fatty acid known for its purported health benefits.

Palmitelaidic Acid In Dairy

The largest sources of palmitelaidic acid are ruminant meat and milk. (source)

Palmitelaidic acid has been reported as the predominant trans-16:1 isomer in cheeses made with goat and ewe milk. (source )

Palmitelaidic acid in human milk

Palmitelaidic acid is one of the most abundant fatty acids in human milk.

Palmitelaidic acid is present in human milk at about 1.5% of the total fatty acid content.

Its concentration is lower than that of palmitic acid (about 3%) but higher than stearic acid (about 0.2%).

Foods You Can Find Palmitelaidic Acid (16:1 t) In

You find Palmitelaidic Acid (16:1 t) mostly in dairy, beef, sausage and luncheon meat, lamb, veal, and game products.

Examples of food sources include

Foods in our nutrition tool

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Sara Niemelä

co-founder Care Omnia, Head Content Creator

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Nutrition is my passion. I've spent thousands upon thousands of hours reading, analyzing, categorizing and comparing research studies.

I’m a wife and a mother of three. I enjoy the outdoors, cooking, and spending time with my family.