Research Keyword: eumelanin

Isolation and Structural Characterization of Melanins from Red and Yellow Varieties of Stropharia rugosoannulata

Researchers studied the pigments that give mushrooms their colors, specifically looking at red and yellow varieties of wine cap mushrooms. They found that these colors come from melanin, the same pigment found in human skin. The study revealed that the red variety has more of certain melanin types than the yellow variety, which explains why they look different. These pigments could have health benefits because melanins are known to have antioxidant and anti-tumor properties.

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Eumelanin Detection in Melanized Focal Changes but Not in Red Focal Changes on Atlantic Salmon (Salmo salar) Fillets

Farmed Atlantic salmon sometimes develop unsightly black and red spots that reduce market value. Researchers analyzed these discolored areas and found that the black spots contain a type of melanin pigment (eumelanin) produced by immune cells called melanomacrophages. The red spots contain different compounds formed from oxidized proteins rather than true melanin. Understanding the chemical differences between these two types of spots could help salmon farmers develop better prevention strategies.

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