Raspberry contains water, carbohydrates, acids, pigment components, aromatic substances, minerals, vitamins, proteins etc. Raspberries are a rich source of vitamin C (30 mg per cup - 50% of daily requirements) and dietary fiber. The fruit has numerous constituents, most importantly: sugars (glucose, fructose, and sucrose), organic acids (malic, citric, salicylic acid, ellagic etc.), essential oil, pigment and tannic substances. Raspberry fruit has low caloric and high nutritional value, medicinal properties and it is well digestible. Freezing preserves the basic components, but also the vitamins.