On: Bread, How Did They Make It? Addendum: Rice

[vondur]

It literally is two glucose molecules bonded via a condensation reaction. The linkage between the molecules is what makes it different from starch, and subsequently what makes it not useful as a food source for most animals.

[agumonkey → vondur]

Is that linkage much more energy dense compared to starch, I always wonder why so few life forms digest cellulose.