title: Phenolics of Selected Cranberry Genotypes (Vaccinium macrocarpon Ait.) and Their Antioxidant Efficacy.
abstract: Free, esterified, and bound phenolic fractions of berries from five different cranberry genotypes and two market samples were evaluated for their total phenolic, flavonoid, and monomeric anthocyanin contents as well as their antioxidant efficacy using TEAC, ORAC, DPPH radical, reducing power, and ferrous ion chelation capacity assays. HPLC-MS/MS analysis was performed for two of the rich sources (Pilgrim and wild clone NL2) of phenolics and high antioxidant activity. Among the genotypes, Pilgrim showed the highest phenolic and flavonoid contents and wild clones NL3 and NL2 showed the highest monomeric anthocyanin and proanthocyanidin content, respectively. Protocatechuic and syringic acids were detected only in Pilgrim, whereas luteolin 7-O-glucoside, quercetin 3-O-rhamnoside, quercetin 3-O-galactoside, proanthocyanidin B-type, and myricetin 3-O-galactoside were found in wild clone NL3 genotype. Moreover, proanthocyanin trimer A-type and dimer B-type predominated in the wild clone NL2, whereas proanthocyanidin dimer B and trimer A were predominant in Pilgrim.
authors.forename: Gihan
authors.initials: G
authors.lastname: Abeywickrama
authors.affiliation: St. John's Research and Development Centre, Agriculture and Agri-Food Canada , St. John's, Newfoundland and Labrador, Canada A1E 0B2.
authors.forename: Samir C
authors.initials: SC
authors.lastname: Debnath
authors.forename: Priyatharini
authors.initials: P
authors.lastname: Ambigaipalan
authors.forename: Fereidoon
authors.initials: F
authors.lastname: Shahidi
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005638:Fruit / Q000737:chemistry* / Q000145:classification / Q000235:genetics; D010636:Phenols / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D053719:Tandem Mass Spectrometry; D029799:Vaccinium macrocarpon / Q000737:chemistry* / Q000145:classification / Q000235:genetics
chemical_list: D000975:Antioxidants; D010636:Phenols; D010936:Plant Extracts
keywords: antioxidant efficacy; cranberry; genotypes; insoluble-bound phenolics; phenolic compounds; proanthocyanidns