Black sesame seeds are black primarily due to the presence of pigments called proanthocyanidins and/or melanins. While both contribute to dark coloration in various seeds, research suggests that melanin is the more likely pigment responsible for the dark color in black sesame seeds.
Understanding the Pigments
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Proanthocyanidins: These are a type of flavonoid, which are a class of plant compounds known for their antioxidant properties. They can range in color from red to brown to black.
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Melanins: These are complex polymers that produce black and brown pigments in a wide variety of organisms, including plants. They are formed through the oxidation and polymerization of phenolic compounds.
Why Melanin is Likely the Primary Pigment
Reports specifically point towards melanin as being the major contributor to the dark pigmentation of black sesame seeds. This determination comes from studies analyzing the chemical composition of the pigments found in these seeds.
Summary
In short, black sesame seeds are black because they contain pigments, primarily melanin, which give them their distinctive dark color.
