turacin การใช้

• Turaco wings contain the red pigment turacin, unlike in other birds where red colour is due to carotenoids.
• When extracted and exposed to light, oxygen, or strong bases, turacin has been shown to take on a green hue.
• It also may be of some biological significance that turacos all seem to be pigmented with turacin and turacoverdin in exactly the same regions of the wing feathers.
• Most feather pigments are melanins ( brown and beige pheomelanins, black and grey eumelanins ) and carotenoids ( red, yellow, orange ); other pigments occur only in certain taxa  the yellow to red psittacofulvins ( found in some parrots ) and the red turacin and green turacoverdin ( porphyrin pigments found only in turacos ).