Method used for extracting chamomille extract by supercritical carbon dioxide extraction

Abstract

The invention provides a method used for extracting chamomille extract by supercritical carbon dioxide extraction. The method comprises following steps: collected fresh chamomile flowers are dried naturally in the shade until the water content is 20% or less; the dried chamomile flowers are smashed and the smashed chamomile flowers are sieved by 20 to 60 meshes sieves; the smashed chamomile flowers are delivered into an extraction kettle, and is extracted for 1 to 3.5h, wherein the flow velocity of carbon dioxide is 20 to 60L / h, ethanol is used as a carrying agent, the flow velocity of ethanol is 0.2 to 2L / h, the temperature is kept at 30 to 60 DEG C, and the pressure is 9 to 16MPa; the obtained extract is delivered into a column-type separation kettle for separation so as to obtain a mixture of chamomile, residual water and organic solvents; the mixture is delivered into a reduced-pressure low-temperature concentrator, the pressure is reduced to -0.04 to -0.09MPa, and the residual water is removed and the organic solvents are recycled at a temperature of 20 to 55 DEG C so as to obtain the chamomille extract. Carbon dioxide is used as a supercritical extraction agent; no toxic or organic matters are left, and no side-effects exist; extraction yield can reach 2.8%; and the method is suitable for industrialized production.

Description

technical field

[0001] The invention relates to supercritical carbon dioxide extraction technology, is especially suitable for chamomile extract, and belongs to the extraction method of effective part components of plants. Background technique

[0002] The traditional chamomile extract is obtained by steam distillation at room temperature or by organic solvent extraction such as petroleum ether, benzene, and aldehyde. The extraction rate of active ingredients is low, and often contains organic solvent residues such as ether, benzene, and aldehyde. adversely affect users. The main components of single chamomile essential oil are volatile aromatic esters, aromatic alcohols, terpenoids, and cyclic hydrocarbons obtained by traditional steam distillation, and the extraction rate is ≤1.5%. As a spice plant, chamomile flower contains not only chamomile flower essential oil, but also a large amount of plant waxes, proteins, glycosides, sugars, natural pigments and other components ...

Examples

Embodiment 1

[0015] Take 10kg of dried chamomile flowers with a water content of ≤20%, crush them through a 40-mesh sieve, and place them in supercritical CO 2 In the extraction kettle, feed carbon dioxide at a flow rate of 50L / h, and at the same time use an auxiliary pump to inject 95% ethanol as a carrier agent at a rate of 1L / h, extract for 2.5 hours at 50°C and a pressure of 15MPa, and put the extract into a column separation kettle Separation to obtain the residual water chamomile extract, and then place the extract in a vacuum low-temperature concentration equipment, reduce the pressure to -0.098MPa, and remove the residual water at 50°C to obtain 0.26kg of chamomile extract. The yield is 2.6%.

Embodiment 2

[0017] Take 10kg of dried chamomile flowers with a water content of ≤20%, crush them through a 60-mesh sieve, and place them in supercritical CO 2 In the extraction kettle, feed carbon dioxide at a flow rate of 55L / h, and at the same time use an auxiliary pump to inject 95% ethanol as a carrier agent at a rate of 1L / h, extract for 2 hours at 50°C and a pressure of 16MPa, and put the extract into a column separation kettle for separation , to obtain a chamomile ethanol residual water mixture, and then place the mixture in a reduced-pressure low-temperature concentration device, reduce the pressure to -0.08MPa, and recycle the organic solvent to remove the residual water at 45°C to obtain 0.28kg of chamomile extract. The rate was 2.8%.

[0018] The HL-2X25L / 40MPa-IIA supercritical CO used in this method 2 The extraction kettle and column separation kettle are produced by Hangzhou Huali Pump Industry Co., Ltd.; the R501 decompression and low temperature concentration equipment i...

example 1

[0021] Addition of chamomile handmade soap:

[0022] In the production of handmade soap, after the saponification reaction process is completed, 2.5% (kg / kg) of rose extract is added to the saponification solution when the temperature of the saponification solution is kept at 60°C, stirred evenly at a constant temperature, injected into the molding mold, cooled, divided, and packaged to obtain chamomile handmade soap. The chamomile extract is used in the production of handmade soaps, replacing the use of chemical essences and pigments in ordinary soaps. After use, the body surface can retain fragrance continuously, and can play the role of whitening, moisturizing, moisturizing, antibacterial, and anti-allergic. .

technical field

[0001] The invention relates to supercritical carbon dioxide extraction technology, is especially suitable for chamomile extract, and belongs to the extraction method of effective part components of plants. Background technique

[0002] The traditional chamomile extract is obtained by steam distillation at room temperature or by organic solvent extraction such as petroleum ether, benzene, and aldehyde. The extraction rate of active ingredients is low, and often contains organic solvent residues such as ether, benzene, and aldehyde. adversely affect users. The main components of single chamomile essential oil are volatile aromatic esters, aromatic alcohols, terpenoids, and cyclic hydrocarbons obtained by traditional steam distillation, and the extraction rate is ≤1.5%. As a spice plant, chamomile flower contains not only chamomile flower essential oil, but also a large amount of plant waxes, proteins, glycosides, sugars, natural pigments and other components ...

Examples

Embodiment 1

[0015] Take 10kg of dried chamomile flowers with a water content of ≤20%, crush them through a 40-mesh sieve, and place them in supercritical CO 2 In the extraction kettle, feed carbon dioxide at a flow rate of 50L / h, and at the same time use an auxiliary pump to inject 95% ethanol as a carrier agent at a rate of 1L / h, extract for 2.5 hours at 50°C and a pressure of 15MPa, and put the extract into a column separation kettle Separation to obtain the residual water chamomile extract, and then place the extract in a vacuum low-temperature concentration equipment, reduce the pressure to -0.098MPa, and remove the residual water at 50°C to obtain 0.26kg of chamomile extract. The yield is 2.6%.

Embodiment 2

[0017] Take 10kg of dried chamomile flowers with a water content of ≤20%, crush them through a 60-mesh sieve, and place them in supercritical CO 2 In the extraction kettle, feed carbon dioxide at a flow rate of 55L / h, and at the same time use an auxiliary pump to inject 95% ethanol as a carrier agent at a rate of 1L / h, extract for 2 hours at 50°C and a pressure of 16MPa, and put the extract into a column separation kettle for separation , to obtain a chamomile ethanol residual water mixture, and then place the mixture in a reduced-pressure low-temperature concentration device, reduce the pressure to -0.08MPa, and recycle the organic solvent to remove the residual water at 45°C to obtain 0.28kg of chamomile extract. The rate was 2.8%.

[0018] The HL-2X25L / 40MPa-IIA supercritical CO used in this method 2 The extraction kettle and column separation kettle are produced by Hangzhou Huali Pump Industry Co., Ltd.; the R501 decompression and low temperature concentration equipment i...

example 1

[0021] Addition of chamomile handmade soap:

[0022] In the production of handmade soap, after the saponification reaction process is completed, 2.5% (kg / kg) of rose extract is added to the saponification solution when the temperature of the saponification solution is kept at 60°C, stirred evenly at a constant temperature, injected into the molding mold, cooled, divided, and packaged to obtain chamomile handmade soap. The chamomile extract is used in the production of handmade soaps, replacing the use of chemical essences and pigments in ordinary soaps. After use, the body surface can retain fragrance continuously, and can play the role of whitening, moisturizing, moisturizing, antibacterial, and anti-allergic. .

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