Abstract
ABSTRACT The aim of this research was to determine the changes in the organic acids and phenolic compounds in fruits of red currant due to maturity. It was harvested two cultivars (Red Lake and Rovada cv.) during four different maturity stages (green color, veraison, pink color, and red color) in red currant orchard in Bolu province. In red currant fruits 12 phenolic compounds (gallic acid, protocatechuic acid, catechin, chlorogenic acid, vanillic acid, syringic acid, p-coumaric acid, ferulic acid, o-coumaric, rutin, phloridzin, and quercetin), 6 organic acids (malic, succinic, citric, fumaric, tartaric, and oxalic acid), and vitamin C were determined depending on maturity. All ripening times were found to be rich in catechin and rutin. It was determined that the contents of vanillic acid, ferulic acid, routine, phloridzin, and quercetin increased with maturation. In the study, the highest organic acids contents were determined at green stages. The content of vitamin C varied depending on the ripening. The results suggest that red currant fruits were richest in organic acids and phenolic compounds in red maturity period.
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