Method for extracting lutein from fresh marigold flowers as raw materials

A technology of marigold and lutein, applied in the direction of organic chemistry, can solve the problems of large solvent consumption, poor quality of finished products, and long processing technology, and achieve high purity of extract, low loss rate, and high extraction rate Effect

Inactive Publication Date: 2015-04-01
吕梁广汇生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for extracting lutein from marigold flowers in order to solve the problems of long processing technology, large solvent consumption, low extraction rate and poor quality of finished products in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for extracting lutein from marigold flowers, the steps are:

[0023] (1) Cleaning and dehydration: Wash and dehydrate marigold flowers with water, press and dehydrate them with a screw conveyor, send them to a disperser for dispersing, and then send them to a tumble dryer, where they are dried with high-temperature hot air for 9 minutes;

[0024] (2) Granulation: send the dried material to the air cooling system for cooling, then send it to the pulverizer for crushing and then granulate. The water content of the particles is 12-14%, and the particle size is 3-4mm;

[0025] (3) Extraction: Extract the marigold particles with a solvent at 50°C for 3 hours. The solvent is n-hexane:ethanol:tetrahydrofuran with a volume ratio of 10:3:2. The total amount of the solvent is equal to the volume of the marigold particles The ratio is 2:1, and then under the condition of a power of 350W, the ultrasonic extraction is enhanced for 20 minutes. After filtration, the filtrate ...

Embodiment 2

[0029] A method for extracting lutein from marigold flowers, the steps are:

[0030] (1) Cleaning and dehydration: Wash and dehydrate marigold flowers with water, press and dehydrate them with a screw conveyor, send them to a disperser for dispersing, and then send them to a tumble dryer, where they are dried with high-temperature hot air for 10 minutes;

[0031] (2) Granulation: send the dried material to the air cooling system for cooling, then send it to the pulverizer for crushing and then granulate. The water content of the particles is 12-14%, and the particle size is 3-4mm;

[0032] (3) Extraction: Extract the marigold particles with a solvent at 50°C for 3 hours. The solvent is n-hexane:ethanol:tetrahydrofuran with a volume ratio of 10:3:2. The total amount of the solvent is equal to the volume of the marigold particles The ratio is 2.2:1, and then ultrasonically strengthened extraction under the condition of 350W power for 15min, after filtration, the filtrate is heat...

Embodiment 3

[0036] A method for extracting lutein from marigold flowers, the steps are:

[0037] (1) Cleaning and dehydration: Wash and dehydrate marigold flowers with water, press and dehydrate them with a screw conveyor, send them to a disperser for dispersing, and then send them to a tumble dryer, where they are dried with high-temperature hot air for 11 minutes;

[0038] (2) Granulation: send the dried material to the air cooling system for cooling, then send it to the pulverizer for crushing and then granulate. The water content of the particles is 12-14%, and the particle size is 3-4mm;

[0039] (3) Extraction: Extract the marigold particles with a solvent at 50°C for 3 hours. The solvent is n-hexane:ethanol:tetrahydrofuran with a volume ratio of 10:3:2. The total amount of the solvent is equal to the volume of the marigold particles The ratio is 2.5:1, and then ultrasonically strengthened for 25 minutes under the condition of power of 350W. After filtration, the filtrate is heated ...

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Abstract

The invention discloses a method for extracting lutein from fresh marigold flowers as raw materials and belongs to the technical field of deep processing of marigold. The method is used for solving the problems of long processing process, large solvent consumption amount, low extraction rate and poor quality of a finished product in the prior art. The method comprises the following steps: (1) cleaning the fresh marigold flowers with water, dehydrating, squeezing, dispersing and drying; (2) pulverizing the dried materials and granulating; (3) leaching and extracting the particles with a solvent of which the temperature is 50 DEG C, carrying out ultrasonic-wave-enhanced leaching and extracting, filtering, carrying out heating distillation to recover the solvent and carrying out vacuum evaporating under reduced pressure on the concentrate to obtain an extract; (4) adding lye into the extract to obtain a saponified solution; and (5) adding distilled water into the saponified solution, evenly stirring, adding ethyl acetate and carrying out vacuum distillation to obtain lutein. The method has the advantages of short process flow, low loss rate of lutein and no solvent residue in the finished product and the yield of lutein reaches 95-98%.

Description

technical field [0001] The invention belongs to the technical field of deep processing of marigolds, and relates to a method for extracting lutein from marigold flowers as raw materials. Background technique [0002] Marigold is rich in lutein, which is a nutrient that can delay vision degeneration and blindness caused by macular degeneration in the elderly, as well as cardiovascular sclerosis, coronary heart disease and tumor diseases caused by body aging. The United States has been extracting lutein from marigolds since the 1970s. It was first added to chicken feed to improve the nutritional value of eggs. In addition, lutein can also be used in cosmetics, feed, medicine, aquatic products, etc. in the industry. [0003] Marigold is the main source of lutein. Extracting lutein from marigold requires finishing marigold. Generally, marigold is granulated first, and then the granules are extracted to extract lutein and other products. Useful ingredients. However, the existi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C403/24
Inventor 韩旭霍瑞琴粟建荣霍瑞彦
Owner 吕梁广汇生物科技股份有限公司
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