02384naa a2200385 a 450000100080000000500110000800800410001910000270006024500970008726000090018450000410019352012680023465000170150265000200151965000110153965000330155065000160158365000180159965000330161765000080165065000160165865000190167465300210169365300230171465300400173765300170177765300310179465300140182565300150183965300160185470000190187070000170188970000220190677300700192819979412014-10-21       2014    bl uuuu     u00u1 u    #d1 aNASSUR, R. de C. M. R.  aChemical characteristics of grape juices from different cultivar and rootstock combinations.  c2014  aDOI: 10.1590/S0100-204X2014000700006  aThe objective of this work was to evaluate the influence of different combinations of grape cultivars and rootstocks on chemical characteristics of grape juices. Six treatments were evaluated, consisting of combinations between the Isabel Precoce and BRS Cora grape cultivars and the 'IAC 766', 'IAC 313', and 'IAC 572' rootstocks. Approximately 10 L of juice were obtained per treatment. Analyses of color, total soluble solids content, pH, anthocyanins, total phenolics, total sugars, and quantification and identification of biogenic amines by HPLC were performed. Biogenic amines, such as putrescine, cadaverine, spermidine, and spermine, were found in all evaluated cultivars. By principal component analysis (PCA), treatments can be divided into two groups, according to the cultivar. Juices obtained from 'Isabel Precoce' are characterized by higher levels of total sugar content and soluble solids; however, juices from 'BRS Cora' are positively correlated with phenolic content, anthocyanins, and color and acidity parameters. The differences found by PCA for juices from the Isabel Precoce and BRS Cora cultivars indicate that, regardless of the rootstock used, the most important factor in the chemical characterization of juices is the grape cultivar.  aAnthocyanins  aBiogenic amines  aGrapes  aPrincipal component analysis  aAntocianina  aPorta enxerto  aPropriedade físico-química  aUva  aViticultura  aVitis Labrusca  aAmina biogência  aAminas biogênicas  aAnálise de componenetes principais  aAntocianinas  aCaracterísticas químicas  aFenólico  aFenólicos  aSuco de uva1 aPEREIRA, G. E.1 aALVES, J. A.1 aLIMA, L. C. de O.  tPesquisa Agropecuária Brasileiragv. 49, n. 7, p. 540-545, 2014.