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Method for continuously extracting effective components in cyperus alternifolius leaves by using ultrasonic-assisted supercritical carbon dioxide

A technology for carbon dioxide and active ingredients, which is applied in the field of continuous extraction of active ingredients in windmill grass leaves by ultrasonic-assisted supercritical carbon dioxide extraction technology, can solve the problems of complicated and tedious processes, large amount of organic solvents, residual toxic and harmful solvents, etc., and achieves a simple process flow. Reliable, short cycle times and low solvent usage

Active Publication Date: 2013-11-20
嘉文丽(福建)化妆品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, water extraction and organic solvent (such as methanol, ethanol, chloroform, etc.) are mainly used to extract the active ingredients of windmill grass leaves. The disadvantages of water extraction are high energy consumption, difficult concentration, serious damage to active ingredients, and poor appearance and odor of the product. etc. However, the organic solvent extraction method has problems such as large amount of organic solvent, great impact on the environment, complex and cumbersome process, serious residual toxic and harmful solvents, and poor quality. The ultrasonic-assisted supercritical carbon dioxide extraction method can effectively solve the above problems and maximize Protect the active ingredients in the windmill grass leaves from being destroyed, and it is green and environmentally friendly, and the process is simple

Method used

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  • Method for continuously extracting effective components in cyperus alternifolius leaves by using ultrasonic-assisted supercritical carbon dioxide
  • Method for continuously extracting effective components in cyperus alternifolius leaves by using ultrasonic-assisted supercritical carbon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] After mixing 1 kg of dried 40-mesh windmill grass leaf powder with 200ml of 80% edible ethanol (the weight ratio of the two is about 100:17), put it in an ultrasonic instrument at 35°C and 53KHz for 20 minutes of ultrasonic treatment, The raw materials are taken out and put into the extraction kettle I7 and the extraction kettle II10 of the supercritical carbon dioxide extraction equipment. Set the extraction pressure to 35MPa, the extraction temperature to 50°C, the temperature of the separation kettle I13 to 55°C, and the pressure to 10MPa, the pressure of the separation kettle II16 to 4.5Mpa, and the temperature of the separation kettle II16 to 35°C. After dynamic extraction for 2 hours, the extract was collected and concentrated to obtain 57g of Herba Fructus extract.

Embodiment 2

[0031] After mixing 1 kg of dried 100-mesh windmill grass leaf powder with 600ml of 95% edible ethanol (the weight ratio of the two is about 100:48), put it in an ultrasonic instrument at 60°C and 37KHz for 60 minutes of ultrasonic treatment, The raw materials are taken out and put into the extraction kettle I7 and the extraction kettle II10 of the supercritical carbon dioxide extraction equipment. The extraction pressure is set to 22MPa, the extraction temperature is 40°C, the temperature of the separation tank I13 is 45°C, the pressure is 8MPa, the pressure of the separation tank II16 is 5Mpa, and the temperature of the separation tank II16 is 40°C. Static extraction for 1 hour, dynamic extraction for 1 hour, the extract was collected and concentrated to obtain 52g of Herba Fructus extractum.

Embodiment 3

[0033] After mixing 1 kg of dry 60-mesh windmill grass leaf powder with 1000 ml of 70% edible ethanol (the weight ratio of the two is about 100:87), put it in an ultrasonic instrument at 40 °C and 40 KHz for 30 minutes, and then put The raw materials are taken out and put into the extraction kettle I7 and the extraction kettle II10 of the supercritical carbon dioxide extraction equipment. The extraction pressure is set to 40MPa, the extraction temperature is 65°C, the temperature of the separation tank I13 is 75°C, the pressure is 6MPa, the pressure of the separation tank II16 is 5Mpa, and the temperature of the separation tank II16 is 45°C. Static extraction for 0.5 hours, dynamic extraction for 1.5 hours, the extract was collected and concentrated to obtain 60 g of Herba chinensis extract.

[0034] The following is to observe the content of flavonoids in the windmill grass leaf extract obtained by the comparative test, to observe the ultrasonic assisted supercritical CO 2 A...

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Abstract

The invention provides a method for extracting effective components in cyperus alternifolius leaves by using an ultrasonic-assisted supercritical carbon dioxide extracting technology. The method comprises the following steps of finely grinding and extracting raw materials by using ultrasonic waves, then, extracting the raw materials at the temperature of 32-90 DEG C and the pressure of 20-60MPa by using the supercritical carbon dioxide, and then, extracting the raw materials under the conditions that a separation kettle I has the pressure of 5-12Mpa and the temperature of 32-90 DEG C and a separation kettle II has the pressure of 4-6Mpa and the temperature of 30-50 DEG C for 1-4h to obtain a safe, pollution-free and high-quality cyperus alternifolius leaf extract. The method can be used for realizing continuous extraction and shortening the production period and is high in extracting efficiency, free of damaging active components, high in repeatability, short in process flow and convenient in operation.

Description

technical field [0001] The invention relates to a method for extracting and separating effective components of plants, in particular to a method for continuously extracting effective components in windmill grass leaves by ultrasonic-assisted supercritical carbon dioxide extraction technology. Background technique [0002] Graptopetalum paraguayense (Graptopetalum paraguayense) is a perennial succulent plant of the genus Echlossia in the family Sedum, also known as lotus palm and cactus lotus. It is not only resistant to high temperature and drought, but also more resistant to cold, with strong vitality and strong adaptability. It can be used in the folk to treat and relieve liver disorders, diuresis, and pain relief. Modern studies have shown that the main active ingredients of windmill grass leaves are flavonoids and polyphenols, which have the functions of protecting the liver, anti-inflammation, inhibiting hypertension, anti-oxidation, and whitening. The acute toxicity t...

Claims

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Application Information

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IPC IPC(8): A61K36/41A61K8/97
Inventor 饶焕文林建平萧自智潘发伍陈康
Owner 嘉文丽(福建)化妆品有限公司
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