title: Polysaccharide composition of Monastrell red wines from four different Spanish terroirs: effect of wine-making techniques.
abstract: Monastrell wines made from grapes grown in four different Spanish "terroirs" (Cañada Judı́o, Albatana, Bullas, and Montealegre) were studied. Different wine-making techniques were also used, including different refrigeration techniques (prefermentative cold maceration and dry ice addition) and the addition of two different enzymes (β-galactosidase and commercial pectinase enzyme). The results pointed to significant differences in the Monastrell wine polysaccharide fractions according to the geographical origin of the grapes. The Rhamnogalacturonan II (RG-II) concentration was 2-fold higher in the Montealegre terroir than in the Bullas terroir. The use of enzymes also modified the polysaccharide content of the wines. RG-II levels were higher in the wines from three terroirs when commercial enzymes were added. The arabinose/galactose ratio of one of the wines was modified by the use of enzymes during wine-making, and some prefermentative cold maceration samples showed high values for several polysaccharides. This study shows the great importance of the "terroir effect" in the polysaccharide composition of wines.
authors: Departamento de Tecnología de Alimentos, Nutrición y Bromatología, Facultad de Veterinaria, Universidad de Murcia , E-30100 Murcia, Spain.
authors: Rafael
authors: R
authors: Apolinar-Valiente
authors: Pascale
authors: P
authors: Williams
authors: Inmaculada
authors: I
authors: Romero-Cascales
authors: Encarna
authors: E
authors: Gómez-Plaza
authors: José María
authors: JM
authors: López-Roca
authors: José María
authors: JM
authors: Ros-García
authors: Thierry
authors: T
authors: Doco
mesh_terms: D005524:Food Technology / Q000379:methods*; D011134:Polysaccharides / Q000737:chemistry* / Q000378:metabolism; D013030:Spain; D027843:Vitis / Q000737:chemistry* / Q000382:microbiology; D014920:Wine / Q000032:analysis* / Q000382:microbiology; D015003:Yeasts / Q000378:metabolism
chemical_list: D011134:Polysaccharides