What Is trans-Lycopene?
Trans-Lycopene is the trans-isomer of the highly beneficial nutrient Lycopene, renowned for its powerful antioxidant properties.
Lycopene is a naturally occurring carotenoid pigment found in plants and photosynthetic bacteria. It belongs to the non-provitamin A family and is part of the broader category of isoprenoids—a naturally occurring, non-toxic carotenoid.
This remarkable compound has shown efficacy in cancer treatments and is currently undergoing evaluation in several clinical trials.
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Understanding trans-Lycopene and Isomerization
Isomers are compounds that share the same chemical formulas but have different structures. When it comes to lycopene, a "cis-isomer" means that functional groups are on the same side of the carbon chain, while a "trans-isomer" indicates that these functional groups are on opposite sides of the carbon chain. (source ◳)
In simple terms, it's about how lycopene's parts are arranged – either on the same side or on different sides of the molecule.
Lycopene: The Red Pigment
Lycopene is a naturally occurring red carotenoid pigment responsible for the vibrant colors found in tomatoes, pink grapefruit, and various foods. The all-trans configuration of lycopene is the most predominant isomer that imparts the characteristic red color to these foods. (source ◳)
In red tomatoes, approximately 94–96% of total lycopene consists of all-trans-lycopene. However, trans-lycopene is poorly absorbed when ingested. (source ◳)
Stability of Lycopene
Compared to compounds like beta-carotene, lycopene exhibits greater stability in the body, making it more effective in delivering its benefits.
trans-Lycopene in Tomatoes
Trans-Lycopene is one of the predominant carotenoids in tomatoes, known for its powerful antioxidant properties with anti-inflammatory and anticancer potential.
The heat processing of tomatoes can convert all-trans lycopene into various cis-isomers. Cis-lycopene isomers are considered more bioavailable due to their greater solubility and absorption compared to the all-trans isomers. (source ◳)
Numerous studies have demonstrated that lycopene from processed tomato products is more bioavailable than that from fresh tomatoes. (source ◳)
Foods Containing trans-Lycopene
In addition to tomatoes, you can find trans-Lycopene in other foods such as dairy and egg products. Examples of food sources include:
Foods in Our Nutrition Tool
For a comprehensive list of foods containing trans-Lycopene and other essential nutrients, explore our nutrition tool.
