Sucrose is made from beets or sugarcane which is different from High Fructose Corn Syrup.
If it's the regular sucrose then it's not made from corn and is made from the sugarcane or beets.
But for the high fructose corn syrup the high fructose corn syrup is made from corn.
Sucrose and High Fructose corn syrup are sometimes confused with each other by some people but they are different and made from different things.
But since starch itself is a simple sugar, a chain of glucose molecules joined together, once it becomes broken down into individual glucose molecules, it's then actually corn syrup, which is essentially 100% glucose.
So if you have sucrose it's made of beets or sugarcane but for high fructose corn syrup it's made from corn.