title: Sun dried Corinthian currant (Vitis Vinifera L., var. Apyrena) simple sugar profile and macronutrient characterization.
abstract: Corinthian currant simple sugar profile was determined by high-pressure liquid chromatography coupled with refractive index detection; the content in other macroconstituents was also assessed. Corinthian currants analyzed were obtained over three consecutive crop years, while the effect of cultivation area altitude was also evaluated. Sugar extraction was optimized with respect to solvent, process, and time. Simple sugar chromatographic analysis was validated for linearity (R2>0.999), limits of detection (6.23-186.66mg/L) and quantification (18.89-565.65mg/L), precision (%RSD<2.67), and recovery (97.99-101.99%). Fructose, glucose, sucrose, maltose, and total sugar content was 32±1%, 32.5±0.6%, 0.40±0.04%, 0.72±0.07% and 66±2%, respectively; moisture, ash, fat, and protein content was 13.8±0.5%, 2.6±0.7%, 0.43±0.06%, and 2.2±0.4%, respectively. Relatively small variations in sugar and other macroconstituent content were detected over the consecutive crops. Cultivation area altitude affected Corinthian currant sugar, fat, and protein content, yet with no remarkable differences.
authors.affiliation: Laboratory of Chemistry - Biochemistry - Physical Chemistry of Foods, Department of Dietetics and Nutrition, Harokopio University, 70 El. Venizelou Ave., Kallithea, 176 71 Athens, Greece.
authors.forename: Eirini K
authors.initials: EK
authors.lastname: Nikolidaki
authors.affiliation: Laboratory of Chemistry - Biochemistry - Physical Chemistry of Foods, Department of Dietetics and Nutrition, Harokopio University, 70 El. Venizelou Ave., Kallithea, 176 71 Athens, Greece.
authors.forename: Antonia
authors.initials: A
authors.lastname: Chiou
authors.affiliation: Laboratory of Chemistry - Biochemistry - Physical Chemistry of Foods, Department of Dietetics and Nutrition, Harokopio University, 70 El. Venizelou Ave., Kallithea, 176 71 Athens, Greece.
authors.forename: Margarita
authors.initials: M
authors.lastname: Christea
authors.affiliation: Laboratory of Chemistry - Biochemistry - Physical Chemistry of Foods, Department of Dietetics and Nutrition, Harokopio University, 70 El. Venizelou Ave., Kallithea, 176 71 Athens, Greece.
authors.forename: Anastasia P
authors.initials: AP
authors.lastname: Gkegka
authors.affiliation: Corinthian Raisins Cooperative SKOS A.S.E., Maizonos 211, Patra 260 05, Greece.
authors.forename: Michalis
authors.initials: M
authors.lastname: Karvelas
authors.affiliation: Laboratory of Chemistry - Biochemistry - Physical Chemistry of Foods, Department of Dietetics and Nutrition, Harokopio University, 70 El. Venizelou Ave., Kallithea, 176 71 Athens, Greece; Agricultural Cooperatives Union of Aeghion, Korinthou 201, Aeghion 251 00, Greece. Electronic address: vkarath@hua.gr.
authors.forename: Vaios T
authors.initials: VT
authors.lastname: Karathanos
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D005632:Fructose / Q000032:analysis*; D005947:Glucose / Q000032:analysis*; D008320:Maltose / Q000032:analysis*; D013395:Sucrose / Q000032:analysis*; D027843:Vitis / Q000737:chemistry*
chemical_list: D005632:Fructose; D013395:Sucrose; D008320:Maltose; D005947:Glucose
keywords: Altitude; Corinthian currants; Fructose; Glucose; Liquid chromatography; Sugars