不同容器贮藏对普洱熟茶品质的影响

目的 探究不同容器贮藏对普洱熟茶品质的影响。方法 以绵纸对照, 选择纸箱、木箱、陶罐、铁罐4种容器对普洱熟茶进行12个月的贮藏。通过感官审评、香气成分测定和理化分析比较贮藏过程中普洱熟茶的品质变化。结果 贮藏过程中, 不同容器贮藏对普洱熟茶感官品质影响较大, 其中, 陶罐和木箱贮藏后普洱熟茶陈香馥郁; 陶罐贮藏后滋味甜醇; 不同容器贮藏的普洱熟茶香气组分的组成差异较大; 贮藏过程中, 不同容器贮藏对普洱熟茶呈味物质变化差异较大, 贮藏12个月后, 其中, 陶罐中普洱熟茶的可溶性糖、氨基酸含量最高, 咖啡碱含量最低, 与感官滋味有纯甜味相一致, 铁罐中普洱熟茶的茶多酚、儿茶素、黄酮、茶黄素含量升高, 可溶性糖的含量降低, 导致滋味出现粗、涩。结论 在贮藏过程中茶样之间的品质变化差异显著, 12个月之内存放普洱熟茶品质最优的贮藏容器为陶罐, 但长期贮藏普洱熟茶的容器选择需要进一步研究。

Effects of different storage containers on the quality of fermented Pu-erh tea

Objective To explore the effects of different storage containers on the quality of fermented Pu-erh tea. Methods Compared with original cotton paper, the fermented Pu-erh tea samples were stored for 12 months in 4 kinds of containers: Paper box, wooden box, pottery pot, iron can. The quality changes of fermented Pu-erh tea during storage were compared by sensory evaluation, aroma composition determination and physicochemical analysis. Results There are significant differences in sensory evaluation among tea samples in different storage containers during storage. Among them, the tea in pottery pot and wooden box had strong scent of fermented Pu-erh tea, the tea in pottery pot tasted sweet and mellow; There are great differences in the composition of aroma components among tea samples in different storage containers; There are significant differences in content of physicochemical components among tea samples in different storage containers during storage. After 12months among them the tea in pottery, the content of soluble and amino acids have the highest, and the content of caffeine have the lowest, it is consistent with pure sweet taste of the tea sensory evaluation. The tea in iron can, the contents of polyphenols, catechins, flavonoids, theaflavins have increased, and the content of soluble sugar decreased, to cause to taste rough and astringent. Conclusion There are significant differences in quality among tea samples during storage, the best quality storage container for fermented Pu-erh tea is pottery pot within 12 months, but the choice of container for long-term storage of fermented Pu-erh tea requires further investigation.