title: Phenolic characterization of malbec wines from mendoza province (Argentina).
abstract: Malbec is a wine grape variety that is now mainly produced in Mendoza and considered to be the emblematic cultivar of Argentina. Forty-four phenolic compounds, including hydroxybenzoic and hydroxycinnamic acids and different flavonoids, were identified and quantified in 61 monovarietal Malbec wines from 11 geographical zones of Mendoza province, using a reversed phase high-performance liquid chromatography system coupled to a diode array detector (HPLC-DAD). Among non-flavonoids, gallic, cis-caftaric, trans-coutaric, and caffeic acids presented the higher concentrations in all of the samples, whereas trans-resveratrol glucoside was present at concentrations from 0.6 to 1.3 mg/L. For the flavonoids, (+)-catechin and (-)-epicatechin presented the higher concentrations among flavan-3-ols with a ratio (+)-catechin/(-)-epicatechin from 1.3 to 2.1. An astilbin derivative and quercetin presented the higher concentrations for flavonols, whereas malvidin-3-glucoside and its derivatives were the major anthocyanins. For the first time the phenolic composition of Malbec wines from Mendoza province has been characterized.
authors.affiliation: Laboratorio de Aromas y Sustancias Naturales, Estacíon Experimental Agropecuaria Mendoza, Instituto Nacional de Tecnologia Agropecuaria, San Martín 3853, 5507 Lujan de Cuyo, Mendoza, Argentina. mfanzone@mendoza.inta.gov.ar
authors.forename: Martín
authors.initials: M
authors.lastname: Fanzone
authors.forename: Alvaro
authors.initials: A
authors.lastname: Peña-Neira
authors.forename: Viviana
authors.initials: V
authors.lastname: Jofré
authors.forename: Mariela
authors.initials: M
authors.lastname: Assof
authors.forename: Fernando
authors.initials: F
authors.lastname: Zamora
mesh_terms: D000872:Anthocyanins / Q000032:analysis; D016588:Anticarcinogenic Agents / Q000032:analysis; D000975:Antioxidants / Q000032:analysis; D001118:Argentina; D002980:Climate; D003116:Color; D005843:Geography; D006801:Humans; D010636:Phenols / Q000032:analysis*; D012987:Soil; D013634:Tannins / Q000032:analysis; D027843:Vitis; D014887:Weather; D014920:Wine / Q000032:analysis*
chemical_list: D000872:Anthocyanins; D016588:Anticarcinogenic Agents; D000975:Antioxidants; D010636:Phenols; D012987:Soil; D013634:Tannins