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Method for extracting lycium barbarum extract by supercritical CO2

A supercritical and plant extract technology, which is applied in the direction of pharmaceutical formulations, plant raw materials, medical preparations containing active ingredients, etc., to achieve the effect of convenient operation, obvious extraction effect and large diffusion coefficient

Inactive Publication Date: 2013-03-27
山西五台山沙棘制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of high-efficiency extraction of wolfberry polysaccharides, the present invention provides a supercritical CO 2 Method for extracting wolfberry extract

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] 2. Preparation of the standard curve Accurately measure 1.0, 2.0, 3.0, 4.0, 5.0 mL of the reference substance solution, place them in a 50 mL volumetric flask, add water to the volume, and obtain the reference substance for the test solution. In addition, take 1.0mL of the test solution of the reference substance in a 25mL graduated test tube with stopper, add 1.0mL of 5% phenol solution, shake well, and add 5.0mL of concentrated sulfuric acid (when adding concentrated sulfuric acid, do not add it along the wall. Pipette The tube is suspended in the mouth of the test tube so that the concentrated sulfuric acid is flushed vertically into the liquid surface), and shake up immediately. Heated in a boiling water bath for 10 minutes, took it out, cooled it in an ice-water bath and placed it at room temperature. Use the reagent blank as a reference to measure the absorbance at a wavelength of 485nm, draw the standard curve with the absorbance as the ordinate and the concentra...

Embodiment 1

[0028] Embodiment 1. The present invention is described in detail below in conjunction with examples.

[0029] Supercritical CO 2 A method for extracting wolfberry plant extract, wherein, the steps of the method are as follows: dry wolfberry in an oven at 80°C for 1.5 hours, the water content of the dried wolfberry is 10%, and crush the dried wolfberry for 40 mesh sieve, and then put the sieved wolfberry into a supercritical extraction kettle for extraction. At a temperature of 50°C and a pressure of 1.7Mpa, CO 2 Under the condition of a flow rate of 0.12L / min, the extract was extracted for 4 hours, and the wolfberry plant extract was dissolved in supercritical CO 2 In the fluid, it enters the separation tank, and after adjusting the temperature and pressure, it dissolves in supercritical CO 2 Lycium barbarum plant extract was isolated from the fluid, CO 2 recycle.

[0030] Detect the active ingredients in the wolfberry plant extract, the content of the wolfberry...

Embodiment 2

[0032] Embodiment 2, supercritical CO 2 A method for extracting a wolfberry plant extract, wherein the steps of the method are as follows: dry the wolfberry in an oven at 70° C. for 2 hours, the water content of the dried wolfberry is 6%, and crush the dried wolfberry for 40 mesh sieve, and then put the sieved wolfberry into a supercritical extraction kettle for extraction. At a temperature of 45°C and a pressure of 2.0Mpa, CO 2 Under the condition of a flow rate of 0.10L / min, the extract was extracted for 4 hours, and the wolfberry plant extract was dissolved in supercritical CO 2 In the fluid, it enters the separation tank, and after adjusting the temperature and pressure, it dissolves in supercritical CO 2 Lycium barbarum plant extract was isolated from the fluid, CO 2 recycle.

[0033] The effective components in the wolfberry plant extract were detected, and the content of the wolfberry polysaccharide in the wolfberry plant extract extracted by this process was 17.1%....

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Abstract

The invention relates to an extraction method for lycium barbarum polysaccharide, and particularly relates to a method for extracting a lycium barbarum extract by supercritical CO2, which is used for achieving the purpose of high-efficiency extraction for lycium barbarum polysaccharide. The method comprises the following steps of: a, drying and crushing lycium barbarum, and then placing the lycium barbarum in an extraction kettle; b, injecting CO2 in a supercritical state in the extraction kettle, and extracting for 3.5-4.5 hours in the conditions of a temperature of 45-55 DEG C, a pressure of 1.2-2.0 Mpa and a CO2 flow velocity of 0.10-0.15 L / min; and c, conveying a CO2 fluid dissolved with the lycium barbarum plant extract in a separation kettle to separate a CO2 gas, compressing the CO2 gas, and then conveying the CO2 gas in the extraction kettle for cycle use. The content of lycium barbarum polysaccharide in the lycium barbarum plant extract obtained by extraction adopting the method for extracting a lycium barbarum extract by supercritical CO2 is up to 17%.

Description

technical field [0001] The invention relates to a method for extracting wolfberry polysaccharides, in particular to a supercritical CO 2 A method for extracting wolfberry extract. Background technique [0002] It is the dry ripe fruit of the plant Lycium barbarum. Oval or cylindrical, slightly pointed at both ends, 1-1.5 cm long, 3-5 mm in diameter. The surface is bright red or dark red, with irregular wrinkles and dull. The texture is soft and slightly moist, with many seeds inside, including many yellow seeds, which are flat and kidney-shaped. Lycium barbarum is a precious medicinal material and tonic, which can be eaten or used as wolfberry tea. According to modern research, wolfberry has the effect of lowering blood sugar, anti-fatty liver, and can resist atherosclerosis. Lycium barbarum contains a small amount of precious functional nutrients Lycium barbarum polysaccharide, which cannot be dissolved in water and cannot be well retained. How to preserve this part of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/815C08B37/00
CPCY02P20/544Y02P20/54
Inventor 赵志侃
Owner 山西五台山沙棘制品有限公司
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