发明名称 |
Lutein to zeaxanthin isomerization process and product |
摘要 |
A lutein to zeaxanthin isomerization process which includes a saponification or alkali treatment of a plant extract containing lutein followed by a heating period under controlled conditions, is carried out in the presence of a surface active agent having an HLB of from 1 to 40 as a catalyst for the lutein to zeaxanthin isomerization reaction, at a temperature between 70 to 140° C., in order to obtain a reaction product with high zeaxanthin concentrations of up to 80% of the total carotenoids.
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申请公布号 |
US6376722(B1) |
申请公布日期 |
2002.04.23 |
申请号 |
US19980181657 |
申请日期 |
1998.10.29 |
申请人 |
SANZ VICENTE ERNESTO RIDAURA;CORREA OSCAR RUBéN GARCíA;NARANJO ARMANDO PRADO |
发明人 |
SANZ VICENTE ERNESTO RIDAURA;CORREA OSCAR RUBéN GARCíA;NARANJO ARMANDO PRADO |
分类号 |
C07C403/24;C09B61/00;(IPC1-7):C07C35/21 |
主分类号 |
C07C403/24 |
代理机构 |
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