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1·Three-tower continuous distillation process of ethyl acetate from aldehyde condensation and purification by gas-phase oxidation of acetic acid and ethylene were also discussed.

加恒沸剂共沸蒸馏和乙酸萃取反应精馏过程。 乙醛缩合法生产乙酸乙酯的三塔连续精馏过程以及乙烯与乙酸气相催化反应的加水精制工艺过程。

2·The activity of aldehyde dehydrogenase (ALD6) of saccharomyces cerevisiaes controls the content of acetic acid in beer.

酿酒酵母中乙醛脱氢酶(ALD6)活性的高低控制着啤酒中乙酸含量的多少。