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Life is everything. Let's make it a healthy one!

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Life is everything. Let's make it a healthy one!

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What Is Proline & What Foods Can I Find It In?

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3D-model of Proline (src)

Proline is a non-essential amino acid.

Proline is biosynthetically derived from the amino acid L-glutamate.

Non-essential means that can be made by humans in the body when needed.

Proline; Amino And Imino Acid

Proline is a cyclic, non-essential amino acid. It’s synthesized from glutamic acid and other amino acids. Proline is a constituent of many proteins. (source )

Proline is called imino acid because it contains a secondary amino group (imine) instead of a primary amino group. (source )

Proline Has Unique Pathways

Proline is along with hydroxyproline, the only amino acid without the primary amino group.

It leads to that proline has a unique metabolic pathway in the mitochondria. (source )

Why Do We Need Proline?

Proline is an essential component of collagen. (source )

Collagen is the most abundant protein found in humans.

It’s responsible for conferring strength and support to human skin.

It also plays an integral role in the aging process. (source )

You can find more benefits of proline in Proline: 6 Research-Backed Benefits .

Foods You Can Find Proline In

You find Proline mostly in sweets, snack, legume, dairy and egg products.

Examples of food sources include

  • Gelatins
  • Pork Skins
  • Soy Protein Isolate
  • Parmesan Cheese
  • Gruyere
  • Bearded Seal

Foods That Contain Proline In Our Nutrition Tool

You can find regularly updated top ranked lists of foods for over 200+ nutrients in our nutrition tool.

If you are interested in what foods contain the most Proline we recommend you visit our tool.

Here's our top ranked list of foods that contain Proline.

Sara Niemelä

co-founder Care Omnia, Head Content Creator


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

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