Lachenmeier Dirk W, Nathan-Maister David, Breaux Theodore A, Kuballa Thomas
Chemisches und Veterinaruntersuchungsamt Karlsruhe, Weissenburger Strasse 3, D-76187 Karlsruhe, Germany.
J Agric Food Chem. 2009 Apr 8;57(7):2782-5. doi: 10.1021/jf803975m.
Research was conducted to ascertain whether analyses of vintage absinthe samples represent their original composition in the early 1900s. Absinthe stored in traditional green glass bottles and irradiated with ultraviolet light for up to 200 h exhibited unchanged composition. Samples stored in clear glass exhibited an 18% reduction in beta-thujone content and a concurrent decoloration. These experiments indicate the stability of thujone in vintage absinthes, as these were stored in green glass bottles. The preserved color of the preban absinthes subjected to analysis indicates that no significant light exposure occurred throughout the duration of storage, and therefore provides indirect proof that no loss of terpenes occurred. The stability of absinthe was further demonstrated through the reanalysis of samples from 2001-2005, which exhibited no changes in thujone content as of 2008. A previous evaluation of preban absinthe was therefore valid and not confounded by significant thujone deterioration over time.
开展了相关研究，以确定对古老苦艾酒样品的分析是否能代表其在20世纪初的原始成分。储存在传统绿色玻璃瓶中并接受长达200小时紫外线照射的苦艾酒，其成分未发生变化。储存在透明玻璃瓶中的样品，β-侧柏酮含量降低了18%，同时发生了褪色。这些实验表明，由于古老苦艾酒储存在绿色玻璃瓶中，侧柏酮具有稳定性。接受分析的禁令前苦艾酒保存的颜色表明，在整个储存期间没有发生显著的光照，因此间接证明没有萜烯损失。通过对2001年至2005年样品的重新分析，进一步证明了苦艾酒的稳定性，截至2008年，这些样品的侧柏酮含量没有变化。因此，之前对禁令前苦艾酒的评估是有效的，且没有因侧柏酮随时间的显著变质而受到干扰。
