介绍了用水提取、醇沉淀和离子交换树脂精制等工艺从甜叶菊中提取甜菊苷的方法。
The paper put forwards the way of extracting refining stevioside by boiling water from the leaves of stevia rebaudiana bertoni and removing impurities from extract by alcohol and ion exchanger.
介绍对比了几种新型的工业废水处理技术：混凝沉淀法、 吸附法、 生物降解法和离子交换树脂法。
Several new technologies of industrial waste water treatment including coagulation, absorption, biodegradation and ion exchange resinare compared.
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