What are the parts of a grain?

Bran, germ and endosperm compose the kernel. The kernel is protected by an inedible husk. 

  • The bran is the outer skin of the kernel.
  • The germ is the embryo that has the potential to sprout into a new plant.
  • The endosperm provides energy to the plant. It is the largest part of the kernel.

So what does whole grain mean? 

It means that all three parts of the edible kernel are processed in the same proportion as harvested. No refining (to remove the germ and bran), no bleaching (to make ?white flour?).

Why are whole grains healthy?

Because the germ and the bran contain so much good stuff! Antioxidants, vitamins, protein, healthy fats, iron, magnesium and fiber, for example.  

The endosperm is the largest part of the kernel and is composed of mainly carbohydrates and proteins.