KIEV, May 6 – The contamination of sunflower oil during its production and export is impossible, according to the director general of the Ukroliyaprom Association, which unites Ukrainian sunflower oil producers, Stepan Kapshuk.

"During the industrial production of sunflower oil, the addition of any foreign substances is impossible. Moreover, it's impossible during its export, as the oil is checked thoroughly," he said in an interview with Interfax-Ukraine on Monday.