发明名称 |
RECOVERY OF L-AMINO ACID ISOMERS FROM THEIR RACEMIC MIXTURES |
摘要 |
<p>A method for the isolation of a substantially pure L-isomer of an amino acid from its D,L racemic mixture does not require the use of a resolving agent, the formation of a derivative of the amino acid or additional enzymic reactions. The method is based upon the concept of the equal saturation point wherein the L-isomer can be separated from the D-isomer by precipitation of the L-isomer when the relative concentration of the D-isomer is less than 7.0% or by precipitation of the D,L racemate when the relative concentration is greater than 7.0%. Selective crystallization through seeding allows for further isolation of pure L-isomer when its relative concentration in solution is very low.</p> |
申请公布号 |
CA2004887(A1) |
申请公布日期 |
1990.06.14 |
申请号 |
CA19892004887 |
申请日期 |
1989.12.07 |
申请人 |
NUTRASWEET COMPANY (THE) |
发明人 |
KIDMAN, GENE E.;GARDNER, WILLIAM E. |
分类号 |
C07B57/00;C07C227/34;C07C229/36;(IPC1-7):C07C227/42;C07C229/02 |
主分类号 |
C07B57/00 |
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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