OBJECTIVE To isolate and identify steroidal saponins from the rhizome of Dioscorea nipponica Makino.

目的分离、鉴定穿山龙即穿龙薯蓣(Dioscoreanipponica Makino)根茎中的甾体皂苷类化合物.

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Aim: To determine the trace mercury in Gynostemma Pentaphyllum Makino.

目的: 建立了绞股蓝中痕量汞的测定方法.

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