China H&Z® Crystalline fructose is a processed sweetener derived from corn that is almost entirely fructose. D-Fructose can also be made from sucrose (table sugar) by splitting the fructose and glucose molecules. Crystalline fructose consists of at least 98% pure fructose, any remainder being water and trace minerals. Fructo-oligosaccharide(FOS),is also known as Fucto-oligo, fructose directly enters into large intestine without being digested and absorbed by human body, and in intestine it rapidly promotes reproduction of bididobactirium and other probiotics, so fructose is also called “Bifidus Factor”