Dried grapes (raisins) Malayar wholesale from Iran. A feature of raisins is the fact that it not only does not lose the beneficial properties of fresh grapes, but also multiplies them several times. Raisins contain glucose and fructose, dietary fiber, B vitamins (B1, B2, B5), H and PP, a large amount of potassium, and essential minerals: calcium, magnesium, iron, phosphorus and sodium.