It has been proven that Corinthian (black) currants are rich in polyphenols, and may have antioxidant properties; moreover, a clinical study carried out on diabetics showed that currant consumption lowers blood pressure and cholesterol levels. In order to promote the value and uniqueness of the Messinian black currant, a study was carried out on the secondary metabolites it contains, given that many of them are especially beneficiary for people.
Corinthian currants are almost exclusively produced in Southern Greece. Other types of currant that are widely consumed all over the world are the Turkish sultanina, as well as the currants produced in California.
Previous phytochemical studies indicate the presence of anthocyanins, flavonoids and phenolic acids. The purpose of this study was to make a comparative phytochemical analysis of the three currant types.

The study was carried out in 2015 by the National Kapodistrian University of Athens, co-funded by the "Captain Vassilis and Carmen Constantakopoulos" Foundation and the “Papadimitriou” company.