Because of the short extraction time, the extraction of unwanted substances such as caffeine and tannin is reduced!

由于萃取时间很短，有一些不希望萃取出来的物质含量就会减少。

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The results showed that much of caffeine in green tea could be removed using supercritical CO2 and better moisture content of green tea for extraction is 40%.

试验结果表明，超临界CO2萃取技术可以有效地脱除绿茶中大部分的咖啡碱； 较佳的茶叶含水量为40%左右；

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