Method for preparing high purity xanthophyll crystal
The invention provides a method for preparing high purity xanthophyll crystal. The method includes that: firstly ethanol and alkali are adopted to saponify marigold extract under the conditions of heating and stirring, reaction product is diluted by distilled water, and centrifugation, washing and v...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a method for preparing high purity xanthophyll crystal. The method includes that: firstly ethanol and alkali are adopted to saponify marigold extract under the conditions of heating and stirring, reaction product is diluted by distilled water, and centrifugation, washing and vacuum drying are carried out, thus obtaining xanthophyll crystal crude product, wherein the content of xanthophylls is 70-80%, and the xanthophyll crystal is recrystallized by virtue of weak polar organic solvent and water, thus high purity xanthophyll product with the xanthophyll content of more than 90% is obtained. The process of the invention is simple, reaction condition is mild, and industrialized production is easy to realize. Xanthophyll product produced by the invention can be applied to the industries of feed, food, cosmetic and medicine. |
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