The apricot, Prunus armeniaca, Armeniaca vulgaris In Europe, apricots were long considered an aphrodisiac, and due to their high fiber to volume ratio, dried apricots are sometimes used to relieve constipation or induce diarrhea. Effects can be felt after eating as few as three. Research shows that of any food, apricots possess the highest levels and widest variety of carotenoids. Carotenoids are antioxidants that may help to prevent heart disease, reduce "bad cholesterol" levels and protect against cancer. Although initial studies suggested that antioxidant supplements might promote health, later large clinical trials did not detect any benefit and suggested instead that excess supplementation may be harmful. In traditional Chinese medicine, apricots are considered helpful in regenerating body fluids, detoxifying, and quenching thirst. Dried organic apricot, produced in Turkey are sweet and tasty. The colour is dark because it has not been treated with sulfur dioxide. Sulfur dioxide is sometimes used as a preservative for dried apricots and other dried fruits owing to its antimicrobial properties, and it is sometimes called E220 when used in this way. As a preservative, it maintains the appearance of the fruit and prevents rotting.