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公开时间: 2011-03-09      申请时间: 2010-10-19
申请人: UNIV ZHEJIANG

CN101984314A
patent for invention


标题(英语)

Preparation method for dry extract of total saponins of rehmannia leaves


摘要(英语)

The invention provides a preparation method for a dry extract of total saponins of rehmannia leaves, which comprises the following steps: a microwave drying machine is used to dry a rehmannia leaf extract under a vacuum condition, and water evaporates and is drawn out by vacuum after the rehmannia leaf extract absorbs microwave energy. The whole drying process has the advantages of short time andlow environmental temperature, and the obtained dry extract is a medium with uniform and loose pores and has the advantages of light color, low water content, good solubility and the like. The methodhas the advantages of short operating process and convenient cleaning, facilitates the production of multiple batches and multiple varieties and meets the GMP requirements. The preparation method provided by the invention can realize that microwave drying power can be automatically selected to dry the extract in different periods in the drying process and the vacuum degree can be simultaneously subjected to on-line adjustment in the drying process. Compared with the common vacuum hot-air oven method, the quality of the dry extract of total saponins of rehmannia leaves obtained by the invention is greatly improved, thereby being beneficial to the subsequent preparation operation. Besides, the drying time is greatly shortened, the labor intensity is lowered, and the production efficiency isimproved.


申请人详细信息

序号 名称 数据格式
1 UNIV ZHEJIANG docdb

发明人详细信息

序号 名称 数据格式
1 XUESONG LIU docdb
2 YONG CHEN docdb
3 LONGHU WANG docdb
4 YING WANG docdb
5 YERUI LI docdb
6 HONGZHOU TIAN docdb
7 YUNYI WU docdb

法律状态

序号 日期 法律代码 详细信息
1 20110309 C06 PUBLICATION
2 20110420 C10 ENTRY INTO SUBSTANTIVE EXAMINATION
3 20121226 C14 GRANT OF PATENT OR UTILITY MODEL

被引非专利信息

引用阶段 文档类型 文档信息

文档历史

公开时间: 2011-03-09
CN101984314A
申请时间: 2010-10-19
CN201010514049
优先权时间: 2010-10-19
CN201010514049

优先权时间: 2006-09-16
CN200610021877

优先权时间: 2009-11-03
CN200910216153

优先权时间: 2009-11-13
CN200910216223

优先权时间: 2006-08-09
CN200610104355

CPC分类


IPC分类

F26B7/00

专利家族

43641484
专利大数据平台