title: Classification of red wines using suitable markers coupled with multivariate statistic analysis.
abstract: Methodologies for chemometric classification of five authentic red wine varieties from Murfatlar wine center, Romania, young and aged are reported. The discriminant analysis based on several anthocyanins, organic acids, (13)C/(12)C, (18)O/(16)O and D/H isotopic ratios, (1)H and (13)C NMR fingerprints revealed a very satisfactory categorization of the wines, both in terms of variety and vintage, thus illustrating the validity of selected variables for wine authentication purposes. LDA applied to the combined data shows 85.7% classification of wines according to grape variety and 71.1% classification of wines according to vintage year, including a control wine set for each categorization, thus allowing an accurate interpretation of the data. Thereby, anthocyanins, certain anthocyanin ratios, oxalic, shikimic, lactic, citric and succinic acids, sugars like glucose, amino acids like histidine, leucine, isoleucine and alanine, and also 2,3-butanediol, methanol, glycerol and isotopic variables were significant for classification of wines.
authors: National R&D Institute of Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, 4 Uzinei St., 240050 Rm. Valcea, Romania; Department of Analytical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania.
authors: Elisabeta Irina
authors: EI
authors: Geana
authors: National R&D Institute of Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, 4 Uzinei St., 240050 Rm. Valcea, Romania.
authors: Raluca
authors: R
authors: Popescu
authors: National R&D Institute of Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, 4 Uzinei St., 240050 Rm. Valcea, Romania.
authors: Diana
authors: D
authors: Costinel
authors: National R&D Institute of Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, 4 Uzinei St., 240050 Rm. Valcea, Romania.
authors: Oana Romina
authors: OR
authors: Dinca
authors: National R&D Institute of Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, 4 Uzinei St., 240050 Rm. Valcea, Romania.
authors: Roxana Elena
authors: RE
authors: Ionete
authors: National R&D Institute of Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, 4 Uzinei St., 240050 Rm. Valcea, Romania.
authors: Ioan
authors: I
authors: Stefanescu
authors: Research Station for Viticulture and Oenology Murfatlar, Murfatlar, Romania.
authors: Victoria
authors: V
authors: Artem
authors: Department of Analytical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania; LaborQ, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania. Electronic address: camelia.bala@g.unibuc.ro.
authors: Camelia
authors: C
authors: Bala
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000872:Anthocyanins / Q000032:analysis; D002072:Butylene Glycols; D002264:Carboxylic Acids / Q000032:analysis; D016002:Discriminant Analysis; D006801:Humans; D007554:Isotopes / Q000032:analysis; D009682:Magnetic Resonance Spectroscopy; D015999:Multivariate Analysis; D019815:Oxalic Acid; D012383:Romania; D027843:Vitis / Q000737:chemistry; D014920:Wine / Q000032:analysis* / Q000145:classification*
chemical_list: D000596:Amino Acids; D000872:Anthocyanins; D002072:Butylene Glycols; D002264:Carboxylic Acids; D007554:Isotopes; C026978:2,3-butylene glycol; D019815:Oxalic Acid
keywords: 2,3-Butanediol (PubChem CID: 262); Alanine (PubChem CID: 5950); Anthocyanins; Beta-d-glucose (PubChem CID: 64689); Citric acid (PubChem CID: 611); Histidine (PubChem CID: 6274); Isotopic ratio; Leucine (PubChem CID: 6106); Malvidin-3-O-glucoside (PubChem CID: 5464047); Multivariate statistics; NMR fingerprints; Organic acids; Shikimic acid (PubChem CID: 8742); Succinic acid (PubChem CID: 1110); Wine classification