A kind of preparation method of lutein
A technology of lutein and dried flowers, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of large amount of organic solvent, complicated process, long time consumption, etc. low effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0026] A preparation method of lutein, characterized in that: using dried marigold flower granules as raw material, comprising the following steps:
[0027] (1) Put the dried marigold flower granules in the extraction tube of the Soxhlet extractor, add petroleum ether, ethanol, and potassium hydroxide in sequence in the extraction bottle of the Soxhlet extractor, and conduct the extraction under the conditions of heating, stirring, and avoiding light. extraction-saponification;
[0028] (2) Filter the mixture in the extraction bottle of the Soxhlet extractor, collect the filter residue, wash the filter residue with an organic solvent until the filtrate is colorless, collect the filtrate, and distill under reduced pressure at 30~55°C to extract 60~50% of the total weight of the organic solvent. 85%, put the concentrated liquid at a temperature of -5~-10°C, let it stand for 15~20 hours, collect the precipitated solid, and dry it in vacuum to obtain the lutein product.
[0029] ...
example 1
[0032] Put 100 grams of marigold dried flower granules into the extraction tube (volume 150 ml) of the Soxhlet extractor, add 180 ml of petroleum ether with a boiling range of 30-60 ° C, 1500 ml Ethanol aqueous solution with a volume concentration of 80%, 0.6 g of potassium hydroxide, extraction-saponification for 12 hours at a heating temperature of 65°C, stirring, and dark conditions; after extraction-saponification, filter the extraction bottle of the Soxhlet extractor The mixture in the mixture, collect the filter residue, wash the filter residue with ethyl acetate until the filtrate is colorless, collect the filtrate, distill under reduced pressure at 45°C, extract 60% of the total weight of the organic solvent, and store the concentrated liquid at a temperature of -5°C Under certain conditions, let it stand for 20 hours, collect the precipitated solid, and dry it in vacuum to obtain 1.1 grams of lutein product with a purity of 91.7%.
example 2
[0034] Put 100 grams of marigold dried flower granules into the extraction tube (volume 150 ml) of the Soxhlet extractor, add 225 ml of petroleum ether with a boiling range of 30-60 ° C, 750 ml Ethanol water solution with a volume concentration of 90%, 0.3 g of potassium hydroxide, extraction-saponification for 8 hours at a heating temperature of 55°C, stirring, and dark conditions; after extraction-saponification, filter the extraction bottle of the Soxhlet extractor The mixture in the mixture, collect the filter residue, wash the filter residue with acetone until the filtrate is colorless, collect the filtrate, distill under reduced pressure at 30°C, extract 80% of the total weight of the organic solvent, and store the concentrated liquid at a temperature of -7°C Next, let it stand for 15 hours, collect the precipitated solid, and vacuum-dry to obtain 0.9 g of lutein product with a purity of 94.1%.
PUM
| Property | Measurement | Unit |
|---|---|---|
| boiling point | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More