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Method for extracting chestnut flower volatile substances by using supercritical CO2 fluid

A technology of volatile substances and chestnut flowers, applied in the field of chemical extraction of natural products, to avoid the loss or reduction of some compounds, improve utilization, prevent loss and structural changes

Inactive Publication Date: 2012-10-31
HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if supercritical CO 2 The method of extracting volatile substances in chestnut flowers by fluid extraction technology has not yet been reported in this regard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Take fresh chestnut flowers in full flowering stage, dry them at a low temperature of 5°C, crush them to 40 mesh, store them at a low temperature of -30°C, and store them for later use;

[0018] 2. Weigh 1Kg of dried chestnut flowers and add them to the extraction kettle. The volume of dried chestnut flowers should not be less than 4 / 5 of the extraction kettle. 2 Extractor;

[0019] 3. Turn on the incubator and the air pump, adjust the temperature of the extraction kettle to 30°C, and introduce supercritical CO 2 And check for leaks, adjust the pressure of the extraction kettle to 15MPa, and start static extraction for 1 hour;

[0020] 4. Convert the above static extraction to dynamic extraction, and at the same time, the pressure of the extraction kettle is increased from 15MPa to 25MPa, the temperature of the extraction kettle is raised from 30°C to 50°C, and the dynamic extraction is performed for 1 hour;

[0021] 5. After the dynamic extraction process, start t...

Embodiment 2

[0023] 1, also adopt the step 1 of embodiment 1 to process standby;

[0024] 2. Weigh 1Kg of dried chestnut flowers and add them to the extraction kettle. The volume of dried chestnut flowers added is not less than 4 / 5 of the extraction kettle. 2 Extractor;

[0025] 3. Turn on the incubator and the air pump, adjust the temperature of the extraction kettle to 30°C, and introduce supercritical CO 2 And check for leaks, adjust the pressure of the extraction kettle to 15MPa, and start static extraction for 1 hour;

[0026] 4. Change the above static extraction to dynamic extraction, and at the same time, the pressure of the extraction kettle is increased from 15MPa to 35MPa, the temperature of the extraction kettle is raised from 30°C to 50°C, and the dynamic extraction is performed for 1 hour;

[0027] 5. After the dynamic extraction process, start to collect the extract of volatile substances to the collection device, and collect an extract with an extract quality of 11 g.

Embodiment 3

[0029] 1, also adopt the step 1 of embodiment 1 to process standby;

[0030] 2. Weigh 1Kg of dried chestnut flowers and add them to the extraction kettle. The volume of dried chestnut flowers should not be less than 4 / 5 of the extraction kettle. 2 Extractor;

[0031] 3. Turn on the incubator and the air pump, adjust the temperature of the extraction kettle to 30°C, and introduce supercritical CO 2 And check for leaks, adjust the pressure of the extraction kettle to 15MPa, and start static extraction for 1 hour;

[0032] 4. The static extraction is converted to dynamic extraction, while the pressure of the extraction kettle is increased from 15MPa to 35MPa, the temperature of the extraction kettle is increased from 30°C to 40°C, and the dynamic extraction is performed for 1 hour;

[0033] 5. After the dynamic extraction process of the extraction kettle, start to collect the extract of volatile substances to the collection device, and collect the extract with an extract quali...

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Abstract

The invention discloses a method for extracting chestnut flower volatile substances by using a supercritical CO2 fluid. The method comprises the following steps of: picking fresh chestnut flowers at a full-bloom stage; drying at a low temperature; smashing; storing at a low temperature; adding into an extraction kettle; connecting a CO2 supercritical extracting instrument; adjusting the pressure and temperature of the extraction kettle; extracting in a static state; turning static extraction into dynamic extraction; simultaneously, raising the pressure and the temperature of the extraction kettle; and collecting an extract in a dynamic extracting process, wherein an extract product is a yellow-green oily substance. In the method, volatile substances in chestnut flowers are extracted by using a supercritical CO2 fluid extracting technology, and extracting conditions are changed alternatively through a programmed temperature raising and programmed pressure raising method for extracting and collecting chestnut flower volatile substances. In the method, chestnut flowers are taken as a raw material; the extraction method has the characteristics of rapidness, easiness, convenience, environment friendliness, high efficiency and the like; and the extracted chestnut flower volatile substances can be applied to plant protection, medical and functional foods.

Description

technical field [0001] The invention belongs to natural product chemical extraction technology, specifically relates to a method of using supercritical CO 2 Fluid extraction of volatile substances from chestnut flowers. The application of chestnut flower volatile substances in essence, medicine and functional food has been improved. Background technique [0002] The natural raw material chestnut flower is the male catkin of the plant chestnut (Castanea mollissima) of the family Fagaceae (Fagaceae). Its combustion smoke has a strong effect of repelling mosquitoes. In addition, it has been used clinically as a folk medicine, and has a certain therapeutic effect. The chestnut flower is sweet, flat, non-toxic, and can treat laryngitis and swelling. According to "Compendium of Materia Medica", it can treat scrofula and dysentery. [0003] Supercritical CO 2 Fluid extraction technology is the latest international high-tech project in the 1990s. It uses liquid CO 2 Extraction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/185A61P11/04A61P31/04A61P31/06A61K133/00
Inventor 王同坤杨越冬杜彬张建旺侯文龙
Owner HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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