>> Is it easy to convert sucrose/fructose into glucose?
>
> A sucrose is a disaccharide molecule consisting of a fructose and a
> glucose bonded together.

Cooks split the sucrose molecule all the time to make "invert sugar."
Basically heat sugar water with some acid (lemon juice). That breaks
the bond. Don't know if it's possible to then easily get the fructose
to glucose.

Also, glucose is the same as dextrose (which is what corn sugar is).