During processing of dried fruit and berries, most of the water is extracted and the nutrients are condensed into a small energy-dense dried food. Dried fruits contain high amounts of fibre, anti-oxidants and micronutrients, such as beta carotene, vitamin E, niacin, iron, magnesium, potassium and calcium. Fruit may be dried either naturally, through sun drying, or through the use of specialized dryers or dehydrators. Dried fruit can be preserved for much longer than fresh fruit and does not require refrigeration.