title: Quality and chemical composition of ten red raspberry (Rubus idaeus L.) genotypes during three harvest seasons.
abstract: Colour and chemical composition of fruits of 10 red raspberry genotypes grown in Nordic climate during three harvest seasons were studied. The main phenolic compounds in the fruits were ellagitannins and anthocyanins, contributing 57% and 42% to the quantified phenolic compounds, respectively. Cyanidin-3-sophoroside was the most abundant anthocyanin (61%). All quality parameters were significantly affected by genotype. The genotypes could be categorised into three groups. 'Veten' and 'RU984 06038' were characterised by high concentrations of flavonoids, i.e., anthocyanins and quercetin glycosides, and dark red colour. 'Octavia', 'Glen Magna', 'RU004 03067', 'Glen Ample' and 'RU974 07002' were characterised by light colour, high titratable acids and low flavonoid concentrations. 'Malling Hestia', 'RU024 01003' and 'RU004 04095' had high content of dry matter, soluble solids, ascorbic acid and ellagic acid containing compounds, in addition to high hue and chroma values. All quality parameters, except ascorbic acid and lambertianin C, varied significantly between harvest seasons. The lowest seasonal variation in fruit quality was observed in 'RU024 01003' and 'Glen Ample' and the highest 'RU004 03067' and 'Glen Magna'.
authors.affiliation: Bioforsk, Norwegian Institute for Agricultural and Environmental Research, N-1432 Ås, Norway; Department of Plant Sciences, Norwegian University of Life Sciences, P.O. Box 5003, N-1432 Ås, Norway. Electronic address: sebastian.mazur@bioforsk.no.
authors.forename: Sebastian Piotr
authors.initials: SP
authors.lastname: Mazur
authors.affiliation: Bioforsk, Norwegian Institute for Agricultural and Environmental Research, N-1432 Ås, Norway.
authors.forename: Arnfinn
authors.initials: A
authors.lastname: Nes
authors.affiliation: Department of Plant Sciences, Norwegian University of Life Sciences, P.O. Box 5003, N-1432 Ås, Norway.
authors.forename: Anne-Berit
authors.initials: AB
authors.lastname: Wold
authors.affiliation: Department of Plant Sciences, Norwegian University of Life Sciences, P.O. Box 5003, N-1432 Ås, Norway.
authors.forename: Siv Fagertun
authors.initials: SF
authors.lastname: Remberg
authors.affiliation: Nofima, Norwegian Institute of Food, Fisheries and Aquaculture Research, Osloveien 1, N-1430 Ås, Norway.
authors.forename: Kjersti
authors.initials: K
authors.lastname: Aaby
mesh_terms: D000872:Anthocyanins / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D005838:Genotype; D010636:Phenols / Q000032:analysis; D065856:Rubus / Q000737:chemistry*
chemical_list: D000872:Anthocyanins; D005419:Flavonoids; D010636:Phenols
keywords: Anthocyanins; Colour; Dry matter; Fruit quality; Genotypes; Polyphenols; Rubus idaeus; Seasonal variation; Soluble solids; Titratable acids; pH