title: Phenolic compounds in strawberry (Fragaria x ananassa Duch.) fruits: Composition in 27 cultivars and changes during ripening.
abstract: Phenolic compounds in fruits of 27 cultivars of strawberry (Fragaria x ananassa Duch.) grown in Norway were characterised and quantified by HPLC-DAD-MS(n). Total phenolic content, calculated as the sum of the individual compounds, varied 2.3-fold among cultivars, i.e., from 57 to 133mg/100g of fw. There were significant differences among cultivars in concentration of all phenolic compounds. The highest variation between cultivars was found for cinnamoyl glucose (0.6-24.9mg/100g of fw). Concentration of anthocyanins, the most abundant class of phenolic compounds in the majority of the cultivars, varied from 8.5 to 65.9mg/100g of fw. Flavan-3-ols (11-45mg/100g of fw) and ellagitannins (7.7-18.2mg/100g of fw) contributed on average 28% and 14% to total phenolic contents in the strawberry cultivars, respectively. In three cultivars harvested at three stages of ripeness, anthocyanins and cinnamic acid conjugates were the compounds most affected by ripening. The anthocyanin profile for the individual cultivars was only slightly affected by ripening and growing conditions.
authors.affiliation: Nofima AS, The Norwegian Institute of Food, Fisheries and Aquaculture Research, Osloveien 1, N-1430 Aas, Norway. Electronic address: kjersti.aaby@nofima.no.
authors.forename: Kjersti
authors.initials: K
authors.lastname: Aaby
authors.affiliation: Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, P.O. Box 5003, N-1430 Aas, Norway; Arable Crops Division, Norwegian Institute for Agricultural and Environmental Research, N-2849 Kapp, Norway.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Mazur
authors.affiliation: Arable Crops Division, Norwegian Institute for Agricultural and Environmental Research, N-2849 Kapp, Norway.
authors.forename: Arnfinn
authors.initials: A
authors.lastname: Nes
authors.affiliation: Nofima AS, The Norwegian Institute of Food, Fisheries and Aquaculture Research, Osloveien 1, N-1430 Aas, Norway.
authors.forename: Grete
authors.initials: G
authors.lastname: Skrede
mesh_terms: D000872:Anthocyanins / Q000032:analysis*; D031985:Fragaria / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D010636:Phenols / Q000032:analysis*
chemical_list: D000872:Anthocyanins; D010636:Phenols
keywords: Anthocyanins; Cinnamic acid conjugates; Ellagic acid glycosides; Ellagitannins; Flavan-3-ols; Flavonols; Fragaria x ananassa; HPLC-DAD-MS(n); Phenolic compounds; Strawberry