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pigments

Collective term (lat. Coloring material) for numerous, fine-grained dyes in cells of human, animal and plant tissues that absorb light in the visible spectral range. They belong to the big group of phenols, Pigments have, in addition to the coloring, which, inter alia, protect against UV light also serves important metabolic-physiological functions. This is for example the chlorophyll in the photosynthesis, Pigments are also in the grapes and then in the resulting wine in the form of carotenoids and flavonoids contain. In the bottle aging of a wine develop polymerization (Caking) of pigments and other substances larger particles, which then as depot (Sediment) are precipitated. See also below anthocyanins,

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