在阿尔卑斯山生长的抗真菌葡萄用不同的加工方案生产的白葡萄酒中的莽草酸浓度

T. Román, G. Nicolini, L. Barp, M. Malacarne, F. Tait, R. Larcher
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引用次数: 4

摘要

莽草酸(SHA)多年来一直被用作欺诈控制的品种标记,特别是对于“黑皮诺”,“灰皮诺”和“白皮诺”的含量非常低。到目前为止,还没有来自德国弗莱堡葡萄栽培研究所的杂交葡萄“Bronner”、“Helios”、“Johanniter”、“Muscaris”、“Solaris”和“Souvignier Gris”的数据发表。这些抗霜霉病和白粉病的白色品种越来越多地种植在意大利的一些阿尔卑斯地区。通过HPLC法对Trentino不同年份和葡萄园的白葡萄酒进行分析,结果表明,“Johanniter”的平均SHA含量最高,而“Solaris”和“Muscaris”的平均SHA含量要低得多。这些数据与之前公布的意大利19种白葡萄酒的数据以及“穆勒-图尔高”和“黄色马斯喀特”葡萄酒的新数据进行了比较。对10个葡萄批次的一个子集,四种不同的酿酒工艺对SHA量的影响进行了研究。从直接压榨到压榨压榨去皮葡萄(+ 28%),压榨前对去皮葡萄进行短时间浸渍(+ 37%)和7天的皮肤接触发酵(+ 107%)的预期顺序依次增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Shikimic acid concentration in white wines produced with different processing protocols from fungus-resistant grapes growing in the Alps
Shikimic acid (SHA) has been used for years as variety marker in fraud control, especially for 'Pinot Noir', 'Pinot Gris' and 'Pinot Blanc' with very low amounts. Until now no data for the hybrid grapes 'Bronner', 'Helios', 'Johanniter', 'Muscaris', 'Solaris' and 'Souvignier Gris' from the Viticultural Institute of Freiburg (Germany) were published. These white varieties with resistance against downy and powdery mildew are increasingly planted in some Alpine Italian regions. Data obtained from white wines of different vintages and vineyards in Trentino by HPLC showed that 'Johanniter' had the highest average content of SHA, while 'Solaris' and 'Muscaris' had much lower levels. These data are compared with previously published data for Italian wines of 19 white varieties and new data for 'Muller-Thurgau' and 'Yellow Muscat' wines. For a subset of 10 grape batches the influence of four different winemaking protocols on the amount of SHA was investigated. Increasing levels were found in the expected order from direct pressing to pressing of crushed-destemmed grapes (+28 %), short maceration of crushed-destemmed grapes before pressing (+37 %) and a 7-day skin-contact fermentation (+107 %).
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