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The persistence of caffeine in experimentally produced black drink residues

机译:咖啡因在实验产生的黑饮料残留物中的持久性

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摘要

Black drink is a native North American caffeinated tea produced from the leaves of Ilex vomitoria. The beverage was an important part of prehistoric Southeastern culture, as it was the only native source of caffeine in North America. The leaves of I. vomitoria were, therefore, a potentially valuable trade resource during the period. As such, the ability to identify archaeological black drink residues is useful to Southeastern archaeologists. In order to determine the plausibility of detecting I. vomitoria in residues, black drink was repeatedly produced in experimental unglazed pottery. The resulting potsherds were buried in several environmental contexts, recovered, and underwent absorbed pottery residue analysis. After two months of burial in three different soil types, plus a control stored in the freezer, caffeine was well-preserved in all sherds, suggesting that caffeine is a potentially useful biomarker for the detection of black drink.
机译:黑饮料是北美原产的含咖啡因的茶,它是从冬青叶制成的。这种饮料是史前东南文化的重要组成部分,因为它是北美唯一的咖啡因本地来源。因此,在此期间,佛手柑的叶子是潜在的宝贵贸易资源。因此,识别考古黑饮料残留物的能力对东南考古学家很有用。为了确定在残留物中检测伏特酵母的合理性,在实验无釉陶器中反复生产了黑饮料。将所得的陶罐埋在几种环境中,进行回收,然后进行吸收的陶器残渣分析。在三种不同土壤类型中埋葬两个月后,再加上保存在冰箱中的对照,咖啡因在所有棚架中都保存完好,这表明咖啡因是检测黑饮料的潜在有用生物标志物。

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