CN103333745A - Method of extracting lemongrass essential oil based on supercritical CO2 extraction technology - Google Patents
Method of extracting lemongrass essential oil based on supercritical CO2 extraction technology Download PDFInfo
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- CN103333745A CN103333745A CN 201310292690 CN201310292690A CN103333745A CN 103333745 A CN103333745 A CN 103333745A CN 201310292690 CN201310292690 CN 201310292690 CN 201310292690 A CN201310292690 A CN 201310292690A CN 103333745 A CN103333745 A CN 103333745A
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- lemon grass
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Abstract
The invention discloses a method of extracting lemongrass essential oil based on a supercritical CO2 extraction technology. The method comprises the steps of screening, drying, smashing and extracting lemongrass, wherein in the step of extracting the lemongrass, a temperature of an extraction kettle is set to be 38 DEG C; extraction pressure is 30Mpa; the extraction time is 120min; a volume flow rate of a solvent CO2 is 16L/h; during extraction, alcohol serves as an entrainer; and a mass concentration of alcohol is 70%. The method is simple to operate; a yield of the separated essential oil is high; and the method is small in equipment size, less in investment, low in energy consumption and short in time, and is an ideal method of extracting the lemongrass essential oil.
Description
Technical field
The present invention relates to a kind of method of from West Indian lemon grass, extracting the West Indian lemon grass essential oil, relate to a kind of supercritical CO that utilizes particularly
2Abstraction technique prepares the method for this essential oil, belongs to West Indian lemon grass essential oil extractive technique field.
Background technology
West Indian lemon grass claims Kang Erxin again, belong to grass, the West Indian lemon grass essential oil is the material that extracts from West Indian lemon grass, the West Indian lemon grass essential oil has the fragrant and sweet flavor of lemon, and lasting fragrance, also have sterilization and disinfection simultaneously, refresh oneself, slow down plurality kinds of health care and medicinal function such as physical fatigue, be widely used in the industries such as spices, medicine, makeup.Traditional West Indian lemon grass essential oil is to adopt distil process to prepare, and this method yield is low, waste is many, energy consumption is big, length consuming time, is not suitable for the West Indian lemon grass extracts essential oil.
Supercritical state refers to that the temperature and pressure of material surpasses its critical temperature and the state of emergent pressure simultaneously, near stagnation point, the density of material is than big two orders of magnitude of gas, close with liquid, but viscosity ratio liquid is little, so velocity of diffusion has good mobility and transmits performance than fast about two orders of magnitude of liquid, utilize supercritical technology to separate purification to mixture, to satisfy industrial demand.
Summary of the invention
The object of the present invention is to provide a kind of yield height, the energy consumption of equipment operation is low, and the time is short, the not a large amount of little restrictions of the amount of being subjected to, the supercritical CO that yield is high
2The method of extraction West Indian lemon grass essential oil.
A kind of based on supercritical CO
2Abstraction technique extracts the method for West Indian lemon grass essential oil, and its step is as follows:
The screening of step 1, West Indian lemon grass: pluck vegetative period and be 4～8 months West Indian lemon grass seedling, remove Lao Ye, Huang Ye, intercepting cleans up from 15～30 centimetres of positions of root;
Step 2, West Indian lemon grass oven dry: with 7.5～15 kilowatts Vegetable drying machine oven dry, bake out temperature is 80～100 ℃, and drying time is 10～60 minutes;
Step 3, West Indian lemon grass are pulverized: with pulverizer West Indian lemon grass is ground into fragment below 2 millimeters;
Step 4, West Indian lemon grass is put into extraction kettle, it is 30MPa that extraction temperature is made as 38 ℃, extracting pressure, and the extraction time is made as 120min, solvent C O
2Flow be 16L/h, use ethanol to do entrainment agent, its mass concentration is 70%.
The present invention is simple to operate, and equipment volume is little, less investment, and energy consumption is low, and the time is short, and the West Indian lemon grass essential oil yield that extracts is 1.6%, is 3 times of common distillation extraction, is the method for desirable extraction West Indian lemon grass essential oil.
Embodiment
A kind of based on supercritical CO
2Abstraction technique extracts the method for West Indian lemon grass essential oil, and its operation steps is as follows:
The screening of step 1, West Indian lemon grass, West Indian lemon grass belong to tropical Gramineae plant, and be 10 months a year vegetative period, therefore should pluck the West Indian lemon grass that be 4～8 months vigorous period vegetative period, reject Lao Ye, Huang Ye, intercepting cleans up from 15～30 centimetres of positions of root;
Step 2, West Indian lemon grass oven dry, use power are that the Vegetable drying machine of 7.5～15KW is dried, and bake out temperature is 80～100 ℃, and drying time is 10～60 minutes;
Step 3, West Indian lemon grass are pulverized, and for reaching effect of extracting preferably, with pulverizer West Indian lemon grass are ground into fragment below 2 millimeters;
Step 4, West Indian lemon grass is put into extraction kettle, it is 30MPa, extraction time to be made as 120min, solvent C O that extraction temperature is made as 38 ℃, extracting pressure
2Flow be 16L/h, use ethanol to do entrainment agent, its mass concentration is 70%.
After extraction finished, the yield that calculates the West Indian lemon grass essential oil was 1.6%, and the yield of the West Indian lemon grass essential oil of common distillation extraction method preparation is 0.53%, is its 3 times.
Claims (1)
1. one kind is extracted the method for West Indian lemon grass essential oil based on the supercritical CO 2 abstraction technique, and its step is as follows:
The screening of step 1, West Indian lemon grass: pluck vegetative period and be 4～8 months lemon cogongrass seedling, remove Lao Ye, Huang Ye, intercepting cleans up from 15～30 centimetres of positions of root;
Step 2, West Indian lemon grass oven dry: with 7.5～1 kilowatts Vegetable drying machine oven dry, bake out temperature is 80～100 ℃, and drying time is 10～60 minutes;
Step 3, West Indian lemon grass are pulverized: with pulverizer West Indian lemon grass is ground into fragment below 2 millimeters;
Step 4, West Indian lemon grass is put into extraction kettle, it is 30MPa, extraction time to be made as 120min that extraction temperature is made as 38 ℃, extracting pressure, and the flow of solvent C O2 is 16L/h, uses ethanol to do entrainment agent, and its mass concentration is 70%.
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| CN 201310292690 CN103333745A (en) | 2013-07-12 | 2013-07-12 | Method of extracting lemongrass essential oil based on supercritical CO2 extraction technology |
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| CN 201310292690 CN103333745A (en) | 2013-07-12 | 2013-07-12 | Method of extracting lemongrass essential oil based on supercritical CO2 extraction technology |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893816A (en) * | 2015-05-13 | 2015-09-09 | 钱万标 | Method used for refining essential oil from lemongrass |
| CN104911031A (en) * | 2015-06-04 | 2015-09-16 | 海南科技职业学院 | Extraction method for citronella oil antibacterial substances |
| CN104928039A (en) * | 2015-05-30 | 2015-09-23 | 防城港市防城区那梭香料厂 | Preparation method for lemongrass essential oil |
| CN104946395A (en) * | 2015-05-25 | 2015-09-30 | 江苏耐雀生物工程技术有限公司 | Method for extracting lemongrass essential oil |
| CN106256892A (en) * | 2016-08-31 | 2016-12-28 | 防城港市绿华源农林科技有限公司 | Herba Cymbopogonis Citrari extracts the method for essence |
| CN107987968A (en) * | 2017-11-25 | 2018-05-04 | 防城港市润禾农林科技有限公司 | It is a kind of to be used to extract the aromatic oil processing technology that essence processing uses |
| CN108559633A (en) * | 2018-03-18 | 2018-09-21 | 黄振忠 | A kind of lemon-grass extraction of essential oil technique |
| CN108635265A (en) * | 2018-06-25 | 2018-10-12 | 广东名辰堂健康产业股份有限公司 | A kind of externally applied spray and preparation method thereof for miliaria of dispelling |
| CN114097776A (en) * | 2021-11-26 | 2022-03-01 | 苏州农业职业技术学院 | Preparation method of mixed extract based on plant material and application of mixed extract in seed antifungal |
-
2013
- 2013-07-12 CN CN 201310292690 patent/CN103333745A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893816A (en) * | 2015-05-13 | 2015-09-09 | 钱万标 | Method used for refining essential oil from lemongrass |
| CN104946395A (en) * | 2015-05-25 | 2015-09-30 | 江苏耐雀生物工程技术有限公司 | Method for extracting lemongrass essential oil |
| CN104928039A (en) * | 2015-05-30 | 2015-09-23 | 防城港市防城区那梭香料厂 | Preparation method for lemongrass essential oil |
| CN104911031A (en) * | 2015-06-04 | 2015-09-16 | 海南科技职业学院 | Extraction method for citronella oil antibacterial substances |
| CN106256892A (en) * | 2016-08-31 | 2016-12-28 | 防城港市绿华源农林科技有限公司 | Herba Cymbopogonis Citrari extracts the method for essence |
| CN107987968A (en) * | 2017-11-25 | 2018-05-04 | 防城港市润禾农林科技有限公司 | It is a kind of to be used to extract the aromatic oil processing technology that essence processing uses |
| CN108559633A (en) * | 2018-03-18 | 2018-09-21 | 黄振忠 | A kind of lemon-grass extraction of essential oil technique |
| CN108635265A (en) * | 2018-06-25 | 2018-10-12 | 广东名辰堂健康产业股份有限公司 | A kind of externally applied spray and preparation method thereof for miliaria of dispelling |
| CN114097776A (en) * | 2021-11-26 | 2022-03-01 | 苏州农业职业技术学院 | Preparation method of mixed extract based on plant material and application of mixed extract in seed antifungal |
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Application publication date: 20131002 |