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黄芪和当归在出口贸易中需炮制除去根皮。为了进一步开发利用药源，我们对黄芪、当归加工除去的根皮与其对应的药材进行了水溶性浸出物的含量测定，发现二者与其药材的水溶性浸出的含量较为接近，均符合《中国药典》所规定的含量要求。
Huangqi and Chinese angelica need to be processed to remove root bark in the export trade. In order to further develop and utilize drug sources, we determined the content of water-soluble extracts from the root bark and its corresponding medicinal materials removed from the roots of Astragalus membranaceus and Chinese angelica. We found that the contents of the water-soluble extracts of the two herbs and their medicinal materials were close to each other and were in compliance with the Chinese Pharmacopoeia. The content requirements stipulated.