Carotenoids are pigments that appear red, orange, or yellow in nature.

the verdict

SUPPORTED

the evidence backs this

Recorded sources

6 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Carotenoids are pigments that appear red, orange, or yellow in nature?

Yes. Multiple authoritative reference and peer-reviewed sources confirm that carotenoids are naturally occurring pigments that appear red, orange, or yellow.

Verdict: SUPPORTED · 6 sources for, 0 against · Last checked 4 Oct 2026

How claims like this are judged

Judged against reference works: claims of this kind are settled by reference works, not journal abstracts.

Evidence for · 6

Wikipedia: Carotenoid

Reference article covering this claim directly

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Wikipedia: Carotenoid. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Carotenoid

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More for · 5

PLOS (all journals): Red Anthocyanins and Yellow Carotenoids Form the Color of Orange-Flower Gentian ( Gentiana lutea L. var. aurantiaca )

Mentions yellow carotenoids and red-pigment carotenoids forming orange/yellow colors.

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PLOS (all journals): Red Anthocyanins and Yellow Carotenoids Form the Color of Orange-Flower Gentian ( Gentiana lutea L. var. aurantiaca ). (n.d.). PLOS (all journals). https://doi.org/10.1371/journal.pone.0162410

LibreTexts: LibreTexts: 1.16: Photosynthesis

Explicitly describes carotenoids as red/orange/yellow pigments found in nature.

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LibreTexts: LibreTexts: 1.16%3A Photosynthesis. (n.d.). LibreTexts. https://bio.libretexts.org/Courses/University_of_California_Davis/BIS_2A%3A_Introductory_Biology_-_Molecules_to_Cell/BIS_2A%3A_Introductory_Biology_(Britt)/01%3A_Readings/1.16%3A_Photosynthesis

OpenStax: OpenStax Biology: 8.2 The Light-Dependent Reactions of Photosynthesis

Notes carotenoids responsible for red tomatoes, yellow corn, and orange peels.

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OpenStax: OpenStax Biology: 8.2 The Light-Dependent Reactions of Photosynthesis. (n.d.). OpenStax. https://openstax.org/books/biology/pages/f829b3bd-472d-4885-a0a4-6fea3252e2b2@

Semantic Scholar peS2o: The carotenoid redshift: Physical basis and implications for visual signaling

States carotenoid pigments are the basis for much red, orange, and yellow coloration.

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Semantic Scholar peS2o: The carotenoid redshift: Physical basis and implications for visual signaling. (n.d.). Semantic Scholar peS2o. https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/ece3.10408

PLOS (all journals): Natural Variation in Petal Color in Lycoris longituba Revealed by Anthocyanin Components

Notes that yellow and orange colors in petals may be due to carotenoids.

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PLOS (all journals): Natural Variation in Petal Color in Lycoris longituba Revealed by Anthocyanin Components. (n.d.). PLOS (all journals). https://doi.org/10.1371/journal.pone.0022098

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