市售茶酒中5种高级醇含量的检测与分析

目的 检测并分析市售茶酒中5种高级醇含量。方法 随机购买9款茶酒,按其酒精度进行不同程度的稀释,采用静态顶空-气相色谱法测定高级醇含量(包括异丁醇、异戊醇、正丙醇、正丁醇、正戊醇等5个指标),以2款普通黄酒进行检测方法的准确性验证,同时将茶酒中高级醇含量与2款普通白酒进行对比。结果 2款普通黄酒的高级醇含量测定结果与文献报道相符,表明本研究方法具有科学性,数据可靠;换算成相同酒精度(100%vol)后,研究所用茶酒中白酒的高级醇含量显著高于啤酒、配制酒和露酒,均在2000 mg/L以上;研究所用同类型酒中茶酒的高级醇含量相对随机购买的普通酒更低。结论 本研究中不同类型的市售茶酒中高级醇含量差异明显,含茶白酒高于其他类型含茶酒,而低于普通酒,这有助于为茶酒等新型功能酒的进一步开发提供数据参考。

Detection and analysis of 5 kinds of higher alcohols content in commercially available tea wine

Objective To detect and analyze 5 kinds of higher alcohols content in commercially available tea wine. Methods 9 kinds of tea wines were randomly purchased and detected by static headspace-gas chromatography after diluted to different levels of alcohol (including isobutyl alcohol, isoamyl alcohol, n-propyl alcohol, n-butyl alcohol, n-amyl alcohol). The accuracy of the detection method was verified by 2 kinds of common rice wine, and the content of high alcohols in tea wine were compared with that of 2 kinds of common Baijiu. Results The higher alcohols content of 2 kinds of common rice wines measured by this method was consistent with the literature reports, proving that the method is scientific and the data is reliable. Converted to the same alcohol content (100%vol), the higher alcohols content of Baijiu was above 2000 mg/L, higher than that of beer, integrated alcoholic beverage and Lujiu in the study. For the same type of wine in this study, the higher alcohols content of tea wine was lower than that of common wine randomly purchased. Conclusion In this study, the higher alcohols content of different types of commercially available tea wines are significantly different. The content of tea Baijiu is higher than that of other tea wine types, but lower than that of common wine, which is helpful to provide data reference for the further development of new functional wines such as tea wine.