发明名称 |
Encapsulation method. |
摘要 |
<p>Biological material such as proteins and microbes is encapsulated by a method which comprises a) admixing the biological material with an aqueous non-ionic polymer solution in which the polymer is present at a concentration of at least 3% w/v; b) forming polymeric beads by adding the mixture of part (a) dropwise into a water-immiscible non-solvent for said polymer, said non-solvent being maintained at a temperature sufficient to freeze the bead but not so low to cause freeze fracture; and c) drying the beads of step (b) to remove substantially all unbound water in said beads. Freeze-drying produces a stable encapsulated product which in the case of microbes retains a high level of viability. The method provides a means of using microbes as agricultural agents since the encapsulated product is acceptable and useful to the farmer.</p> |
申请公布号 |
EP0320483(A2) |
申请公布日期 |
1989.06.14 |
申请号 |
EP19880870182 |
申请日期 |
1988.12.08 |
申请人 |
MONSANTO COMPANY |
发明人 |
BAKER, CAROL ANN;BROOKS, ALBERT ARTHUR;GREENLEY, ROBERT ZIOLKOWSKI;HENIS, JAY MYLS STUART |
分类号 |
A01N25/28;C12N1/14;C12N1/20;C12N11/04;C12N11/08;C12N11/12 |
主分类号 |
A01N25/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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