Methods of domestication and UV mutagenesis were used to prepare tea wine yeast.

采用驯化与紫外线诱变并用的方法研制茶酒酵母。

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Combining the ion precipitation with column chromatography to prepare tea polyphenol was studied.

研究了离子沉淀法和大孔吸附树脂层析法结合制备茶多酚的工艺。

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Although there are many ways to prepare tea catechins, the solvent extraction and the iron-precipitation are mainly applied in the industrial technology.

制备儿茶素的方法很多，但目前工业化制备技术主要集中于溶剂萃取法和金属离子沉淀法。

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The tour starts in Plaza Congreso where Jed gives tour participants an overview of local history, shares insights into the surrounding architecture and teaches the group how to formally prepare, serve and drink mate, traditional Argentinean tea.

BBC: Buenos Aires�� Man Tour