It doesn't.
There is 0 grams of fiber in sugar
There is no appreciable amount of dietary fiber in a cup of sugar.
fiber
Sugar is 100% carbohydrates and nothing else. No protein, no fat, no fiber.
Sugar Cane After squeezing the sugar from sugarcane, the fibrous residue called bagasse can be used for papermaking, and some tropical countries use bagasse that way. The papermaking economics have to outweigh the use of bagasse as an energy source for the sugar mill.
Soluble fiber does not raise blood sugar levels. In fact, it can help regulate blood sugar levels by slowing down the absorption of sugar into the bloodstream.
2/3 cup: 2g of fiber
fiber
Sugar, fiber, and other carbohydrates.
Sugar,Starches,and fiber
carbohydrates
sugar starch fiber alcohol