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Comparison of the main compounds in Fuding white tea infusions from various tea types

机译:各种类型的福鼎白茶浸泡液中主要成分的比较

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摘要

The purpose of this study was to compare the main components, and particularly catechins, caffeine, theanine, free amino acids, and water extracts, in Bai Hao Yin Zhen, Bai Mu Dan, and Shou Mei Fuding white tea infusions brewed at different temperatures, and their contributions to taste were estimated by dose-over-threshold value. Infusion temperature had a distinct effect on the main components extracted, and 100 °C was found to be optimal for extracting catechins and caffeine. However, the effect of temperature on theanine, free amino acids, and water extracts varied with tea type. Bai Mu Dan and Shou Mei yielded a higher content of the major compounds than did Bai Hao Yin Zhen. Thus, infusion temperature had a large effect on extracting the main compounds, and the differences in content between the three white teas presumably reflected differences in the harvest time, processing method or leaf shape.
机译:这项研究的目的是比较在不同温度下酿造的白好音珍,白木丹和寿美福鼎白茶中的主要成分,尤其是儿茶素,咖啡因,茶氨酸,游离氨基酸和水提取物,并通过剂量超过阈值估算其对味道的贡献。浸入温度对提取的主要成分有明显的影响,发现100°C最适合提取儿茶素和咖啡因。然而,温度对茶氨酸,游离氨基酸和水提取物的影响随茶类型而变化。与白好音珍相比,白木丹和寿梅的主要化合物含量更高。因此,浸泡温度对提取主要化合物有很大的影响,这三种白茶之间的含量差异可能反映了收获时间,加工方法或叶片形状的差异。

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