Why are autumn leaves and ginkgoes changed color?

 Plants do photosynthesis to maintain their green color, but how the leaves and ginkgo change color in autumn?

The leaves are shown in two main colors.

The first is red, and the second is yellow.

1st color : Red (maple)

1. Turns red case 

The Anthocyanins are formed in the leaves and turn red
instead the red maple disappears the chlorophyll.
A leaf filled with chlorophyll


* Anthocyanins are usually colored Blue?

It is often known as an antioxidant 
and is found in many fruits such as blueberries.

If you look at the fruits containing these anthocyanins, 
you can see that they are all reddish inside.
blueberries have reddish their inside


2. Turns yellow case

Yellow maple is a tree that cannot make anthocyanins.

So in autumn, chlorophyll decomposes, 

leaving only the original color yellow.

This yellow light is due to the existing carotenoid pigment.
chlorophyll turn into yellow color


* Summary

Anthocyanins --become--> Red
chlorophyll  ----becomes--> Yellow