The goal of the research was quantitative determination biochemical compounds (ascorbic acid, reducing sugars, tannins and titratable acidity) in Rubus fruticosus L. fruits – blackberries ('Melana', 'Triple Crown', 'Arapaho' 'Thornfree'), propagated by tissue culture cultivated under ecological conditions Republic Moldova. spectrophotometric ascorbic acid revealed that highest content this phyt...