DISTRIBUTION OF AROMATIC SUBSTANCES IN BLACK-CURRANTS

The study of the content of aromatic substances in individual parts of the black current plant [Ribes nigrum L.] shows, that the volatile aroma components are abundantly represented in dormant buds. If the buds open the content of aromatic substances depending on the stage of budding is even higher. Pronounced differences in the content of aromatic substances were found in the branches with removed buds after budding. The leaves contain about 25 % of the total amount of aromatic substances in the buds. Fractioning of aromatic substances to the acid, alkaline and neutral fractions confirmed that from the point of view of organoleptic characters the neutral fraction is the richest and most acceptable. Comparing five varieties of black currents we found out that the variety Mendip cross, NA [number of aroma] 1894 and the variety Roodknop, NA 1004, contained the highest and the lowest amount of aromatic substances respectively. Medium content of aromatic substances was detected in our variety Eva, NA 1461.