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Method for extracting uranidin from marigold flower

A technology for marigold flowers and yellow pigment, which is applied in the field of yellow pigment extraction, can solve the problems of high solvent residue, easy oxidative degradation, inability to meet high-quality pigments, etc., and achieves the effects of high extraction efficiency and fast extraction speed.

Inactive Publication Date: 2013-12-25
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional method of extracting natural pigments with organic solvents has many defects, such as high solvent residue, low product purity, odor, etc., which cannot meet the international market's demand for high-quality pigments
In addition, marigold yellow pigment belongs to carotenoids, which is easy to be oxidized and degraded

Method used

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  • Method for extracting uranidin from marigold flower
  • Method for extracting uranidin from marigold flower
  • Method for extracting uranidin from marigold flower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Fresh marigold flowers were picked, dried at 40°C, and crushed to a particle size of 100 mesh. The pulverized petals are mixed according to the ratio of 1:10 of the material and the extraction solvent n-hexane, and vacuum-packed. Put the vacuum-packed material in an ultra-high pressure treatment device, treat it at 250Mpa and 30°C for 6min, and repeat the treatment twice. After the treatment is completed, open the vacuum packaging bag, filter and separate the residue and feed liquid. Concentrate the feed solution in vacuum to obtain the marigold flower yellow pigment extract. Product packaging. The extraction rate of the obtained marigold flower yellow pigment was 8.49%.

Embodiment 2

[0021] Example 2 Fresh marigold flowers were picked, dried at 40° C., and crushed to a particle size of 50 mesh. The pulverized petals are mixed according to the ratio of 1:20 of the material and the extraction solvent tetrahydrofuran, and vacuum-packed. The vacuum-packed materials were placed in an ultra-high pressure treatment device, and treated at 300Mpa and 40°C for 65min, and the treatment was repeated 3 times. After the treatment is completed, open the vacuum packaging bag, filter and separate the residue and feed liquid. Concentrate the feed solution in vacuum to obtain the marigold flower yellow pigment extract. Product packaging. The extraction rate of the obtained marigold flower yellow pigment was 7.99%.

Embodiment 3

[0022] Example 3 Fresh marigold flowers were picked, dried at 40°C, and crushed to a particle size of 200 mesh. The pulverized petals are mixed according to the ratio of 1:15 of the material and the extraction solvent acetone, and vacuum packed. The vacuum-packed materials were placed in an ultra-high pressure treatment device, and treated at 300Mpa and 40°C for 65min, and the treatment was repeated 3 times. After the treatment is completed, open the vacuum packaging bag, filter and separate the residue and feed liquid. Concentrate the feed solution in vacuum to obtain the marigold flower yellow pigment extract. Product packaging. The extraction rate of the obtained marigold flower yellow pigment is 10.25%.

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Abstract

The invention discloses a method for extracting uranidin from a marigold flower by utilizing an ultra-high pressure technique, wherein the method has the advantages of short extracting time, high extracting efficiency and no solvent consumption. The method provided by the invention is characterized by comprising the following steps: crushing the marigold flower, immersing in a solvent, carrying out vacuum packaging, placing in an ultra-high pressure processor, depressurizing after carrying out ultra-high processing for a while, and then carrying out filtration, concentration and the like to obtain the uranidin of the marigold flower. The method provided by the invention is an effective method for extracting the uranidin from the marigold flower.

Description

technical field [0001] The invention relates to a method for extracting yellow pigment from marigold flowers, in detail, it is a method for extracting yellow pigment from marigold flowers by using an ultra-high pressure treatment method. Background technique [0002] Marigold (Tagetse erecta L.), also known as stinky hibiscus, ten thousand lanterns, honeycomb chrysanthemum, etc., belongs to the annual herbaceous flowers of Compositae. Its yellow pigments are mainly lutein esters, lutein and other trace carotenoids such as zeaxanthin and cryptoxanthin. Many foreign scholars have devoted themselves to the research on the physiological effects of lutein, and found that the high content of lutein in marigold flower yellow pigment not only has coloring effect, but also has many important physiological functions: anti-oxidation, protecting the human body from singlet oxygen and free The damage caused by the role of the base; prevent retinal jaundice, relieve senile vision loss; p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B61/00
Inventor 陈利梅孙小凡李德茂
Owner LIAOCHENG UNIV