发明名称 |
PRODUCTION OF IMPROVED STORAGE-STABLE EX- TRACT FROM INDIAN MELIACEOUS SEED |
摘要 |
PURPOSE: To improve storage stability of an extract containing azadirachtin as an active insecticidal component by treating the extract of seeds of neem with a molecular sieve and selectively removing water contained therein. CONSTITUTION: Neem seeds are dried and the dried seeds are ground and a water-containing azadirachtin extract solution is extracted from the powder with a solvent capable of dissolving azadirachtin (e.g. an alcohol or an aprotic solvent). An effective amount of 3-4Åmolecular sieve is added to the solution and water is selectively removed from the extract to provide stable azadirachtin solution containing <=5vol.%, especially <=1vol.% water.
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申请公布号 |
JPH0338505(A) |
申请公布日期 |
1991.02.19 |
申请号 |
JP19900164330 |
申请日期 |
1990.06.25 |
申请人 |
W R GRACE & CO |
发明人 |
JIEIMUZU FUREDERITSUKU UORUTAA |
分类号 |
A01N25/22;A01N43/90;A61K36/58;C07J71/00 |
主分类号 |
A01N25/22 |
代理机构 |
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