The saccharide was extracted with hot water, and purified with Fehling reagent and 95% ethanol.

利用铜沉和醇沉法提取纯化多糖。

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More worrying still, the Ministry of International Trade and Industry has warned makers of 24-hour baths, which keep supposedly purified water hot all day, that their products may harbour Legionnaires' disease.

ECONOMIST: The Japanese are a super-clean lot. Obsessively so?