TY - JOUR T1 - Influence of vine training and sunlight exposure on the 3-alkyl-2-methoxypyrazines content in musts and wines from the Vitis vinifera variety cabernet sauvignon. AU - Sala,Cristina, AU - Busto,Olga, AU - Guasch,Josep, AU - Zamora,Fernando, PY - 2004/5/27/pubmed PY - 2004/7/10/medline PY - 2004/5/27/entrez SP - 3492 EP - 7 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 52 IS - 11 N2 - The influence of vine training and sunlight exposure on the 3-alkyl-2-methoxypyrazines contents in musts and wines was studied by means of two previously reported methods based on headspace solid-phase micro-extraction. Experimental samples were monitored throughout grape ripening and wine making. 3-Isobutyl-2-methoxypyrazine, 3-sec-butyl-2-methoxypyrazine and 3-isopropyl-2-methoxypyrazine were identified. The 3-isobutyl-2-methoxypyrazine content decreased throughout grape ripening in all of the sample types studied. After 1 day of maceration with the skins, there was an increase, but after racking, no further increase was observed. No significant differences between samples were found during grape ripening. Wines from goblet-trained vines, however, contained significantly less 3-isobutyl-2-methoxypyrazine. Clusters protected from sunlight since the beginning of the veraison resulted in wines with a significantly lower content of this compound than the control samples. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/15161221/Influence_of_vine_training_and_sunlight_exposure_on_the_3_alkyl_2_methoxypyrazines_content_in_musts_and_wines_from_the_Vitis_vinifera_variety_cabernet_sauvignon_ DB - PRIME DP - Unbound Medicine ER -