Co-extraction of azadirachtin and neem oil
    3.
    发明授权
    Co-extraction of azadirachtin and neem oil 失效
    共同提取印苦楝子素和楝树油

    公开(公告)号:US5503837A

    公开(公告)日:1996-04-02

    申请号:US311379

    申请日:1994-09-23

    CPC分类号: C07H19/01 C11B1/10 C11B1/108

    摘要: Disclosed is an improved method of extracting neem seeds. The method involves co-solvent extracting neem seeds with a solvent mixture of a nonpolar, aliphatic hydrocarbon solvent and a polar solvent to simultaneously remove the hydrophilic and hydrophobic extracts from the neem seeds. The method provides novel neem extract mixtures which contain both the hydrophobic and hydrophilic portion of the neem seeds. The extract mixtures may be further extracted to yield an azadirachtin-containing solid product having greater than 10 weight percent of azadirachtin.

    摘要翻译: 公开了一种提取楝树种子的改进方法。 该方法包括用非极性,脂族烃溶剂和极性溶剂的溶剂混合物共溶剂萃取楝树种子,以同时从楝树种子中除去亲水和疏水的提取物。 该方法提供新颖的楝树提取物混合物,其含有楝树种子的疏水部分和亲水部分。 可以进一步提取提取物混合物,以产生具有大于10重量%的印苦楝子素的含楝树精的固体产物。

    Stability of azadirachtin-containing solid
    4.
    发明授权
    Stability of azadirachtin-containing solid 失效
    含印楝素的固体的稳定性

    公开(公告)号:US5635193A

    公开(公告)日:1997-06-03

    申请号:US482048

    申请日:1995-06-07

    摘要: The stability of an azadirachtin-containing solid preparation is increased if the preparation contains about 5% or less volatile polar solvents and 1% or less water. Reduction of the percentage of volatile polar solvents present in preparations of azadirachtin-containing solids to such levels improves the storage-stability of the solids without significantly degrading the azadirachtin in the solid. Solvents are preferably removed by drying the preparation at a suitable temperature for a time sufficient to reduce the level of water and volatile polar solvents to acceptable levels.

    摘要翻译: 如果制剂含有约5%或更少的挥发性极性溶剂和1%或更少的水,则含印楝素的固体制剂的稳定性增加。 将存在于含印楝素的固体的制剂中的挥发性极性溶剂的百分比降低到这样的水平可以改善固体的储存稳定性,而不会显着降解固体中的印苦楝子素。 优选通过在合适的温度下干燥该制剂足以将水和挥发性极性溶剂的水平降低至可接受水平的时间来除去溶剂。

    Co-extraction of azadirachtin and neem oil
    5.
    发明授权
    Co-extraction of azadirachtin and neem oil 失效
    共同提取印苦楝子素和楝树油

    公开(公告)号:US5397571A

    公开(公告)日:1995-03-14

    申请号:US36795

    申请日:1993-03-25

    CPC分类号: C07H19/01 C11B1/10 C11B1/108

    摘要: Disclosed is an improved method of extracting neem seeds. The method involves co-solvent extracting neem seeds with a solvent mixture of a nonpolar, aliphatic hydrocarbon solvent and a polar solvent to simultaneously remove the hydrophilic and hydrophobic extracts from the neem seeds. The method provides novel neem extract mixtures which contain both the hydrophobic and hydrophilic portion Of the neem seeds. The extract mixtures may be further extracted to yield an azadirachtin-containing solid product having greater than 10 weight percent of azadirachtin.

    摘要翻译: 公开了一种提取楝树种子的改进方法。 该方法包括用非极性,脂族烃溶剂和极性溶剂的溶剂混合物共溶剂萃取楝树籽,以同时从楝树种子中除去亲水和疏水的提取物。 该方法提供新颖的楝树提取物混合物,其含有楝树种子的疏水部分和亲水部分。 可以进一步提取提取物混合物,以产生具有大于10重量%的印苦楝子素的含楝树精的固体产物。