A method for preparing cryptoxanthin from marigold extract
A technology of marigold and cryptoxanthin, applied in the direction of organic chemistry, etc., can solve the problems of incapable of large-scale production, difficult process realization, high cost, etc., and achieve the effects of convenient large-scale production, high product purity, and convenient separation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0020] 1) Marigold extract, sodium ethoxide and tea polyphenols were prepared at a mass ratio of 100:22:1.2, and then reacted at 70°C for 2 hours under the protection of nitrogen;
[0021] 2) Add hydrochloric acid to adjust the pH to 2, stir at 75°C for 0.5h, lutein is converted into cryptoxanthin under acid catalysis, and stand to separate the bottom water layer to obtain the upper part including cryptoxanthin;
[0022] 3) Add a mixture of ethanol and n-hexane to the mixture obtained in step 2) for dilution. The mass ratio of ethanol and n-hexane in the mixture is 1:1, heat at 54°C for 2.0h, cool down to 15°C to crystallize, and separate the solid and liquid. Obtained, the yield is 87%, and the content of cryptoxanthin in the product obtained is 89%.
Embodiment 2
[0024] 1) Marigold extract, sodium methoxide and vitamin E were prepared at a mass ratio of 100:25:1, and then reacted at 80°C for 2.5 minutes under the protection of nitrogen;
[0025] 2) Add sulfuric acid to adjust the pH to 3, stir at 80°C for 0.5h, the lutein is converted into cryptoxanthin under acid catalysis, and let stand to separate the bottom water layer to obtain the upper part including cryptoxanthin;
[0026] 3) Add a mixture of ethanol and n-hexane to the mixture obtained in step 2) for dilution. The mass ratio of ethanol and n-hexane in the mixture is 1:0.8, heat at 55°C for 2.0h, cool down to 13°C to crystallize, and separate the solid and liquid. Obtained, the yield is 86%, and the content of cryptoxanthin in the product obtained is 87%.
Embodiment 3
[0028] 1) Marigold extract, potassium ethoxide and TBHQ were prepared at a mass ratio of 100:17:1.5, and then reacted at 55°C for 3 hours under the protection of nitrogen;
[0029] 2) Add hydrochloric acid to adjust the pH to 2, stir at 70°C for 0.7h, the lutein is converted into cryptoxanthin under acid catalysis, and stand to separate the bottom water layer to obtain the upper part including cryptoxanthin;
[0030] 3) Add a mixture of ethanol and n-hexane to the mixture obtained in step 2) for dilution. The mass ratio of ethanol and n-hexane in the mixture is 1:1.2, heat at 53°C for 1.9h, cool down to 17°C to crystallize, and separate the solid and liquid. Obtained, the yield is 85%, and the content of cryptoxanthin in the product obtained is 88%.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com