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Preparation method for subcritical fennel essential oil water extraction

A technology of fennel essential oil and subcritical water, which is applied in the direction of fat oil/fat production, fat production, etc., can solve the problems of component damage, affecting the quality of essential oil, low recovery rate, etc., and achieve an easy-to-achieve effect

Inactive Publication Date: 2013-10-02
SUZHOU TIANLING CHINESE TRADITIONAL MEDICINE SLICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve many difficult problems existing in traditional essential oil extraction methods, such as residual extraction solvent, component damage caused by too long extraction time, low recovery rate, etc., which seriously affect the quality of essential oil, the present invention provides a low-cost, production The process is simple, the yield is high, and the preparation method of the subcritical water extraction fennel essential oil suitable for commercial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The Effect of Extraction Time on the Yield of Essential Oil

[0020] According to the above method, take 100 g of fennel powder with a crushing degree of 40 mesh, put it into an extraction tank, extract under the conditions of 15, 25, 35, 45, and 60 min at an extraction pressure of 10 MPa, and an extraction temperature of 150 ° C, respectively, and calculate the yield of the extract.

[0021] Table 1 Effect of extraction time on yield of essential oil

[0022] Extraction time (min) Extraction rate (%) 15 4.12 25 4.98 35 5.98 45 4.56 60 4.07

Embodiment 2

[0023] Embodiment 2 The influence of extraction temperature on the yield of essential oil

[0024] According to the above method, take 100g of fennel powder with a crushing degree of 40 mesh, put it into the extraction tank, extract the extraction pressure at 10MPa, extract at 100, 110, 130, 150, and 180°C, and extract at an extraction temperature of 35 minutes, and calculate the extract Yield.

[0025] The influence of table 2 extraction temperature on essential oil yield

[0026] Extraction temperature ℃ Extraction rate% 100 3.04 110 4.05 130 5.72 150 4.74 180 4.01

Embodiment 3

[0028] The fennel seeds were dried with hot air for 24 h, crushed through a 40-mesh sieve, sealed and stored at room temperature for later use. Put 100g of powder into the extraction tank, send the deionized water to the preheater for preheating through the pressure pump, heat the deionized water to 130°C and enter the extraction tank, the mass of deionized water and powder is 10:1, The pressure of the extraction tank is 10Mpa. After extracting for 35 minutes, add a certain amount of potassium chloride and stir thoroughly, add absolute ethanol, the ratio of extract to absolute ethanol is 1:1, mix evenly and let stand for 40 minutes to separate layers, collect absolute ethanol and evaporate to concentrate Get fennel essential oil. The extraction rate was 5.87%, and the essential oil content determined by GC method was 95.2%.

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Abstract

The invention provides a preparation method for subcritical fennel essential oil water extraction, which comprises the following steps: hot-air drying fennel seeds for 24 h, smashing the fennel seeds, enabling the smashed fennel seeds to pass through a 40-mesh sieve, sealing and storing the final product at ordinary temperature for standby; to be specific, putting pre-processed powder into an extraction tank; conveying deionized water to a pre-heater to preheat through a pressure pump, and enabling the heated deionized water to enter the extraction tank when the deionized water is heated to 100-180 DEG C, wherein the mass ratio of the deionized water and the powder is 10 : 1, and the pressure is 10 Mpa; adding a certain amount of potassium chloride to fully stir and adding absolute alcohol after extraction for a while, wherein the proportion of the extracting solution and the absolute alcohol is 1 : 1; uniformly mixing and still standing the extracting solution and the absolute alcohol for 40 min for delamination; obtaining the fennel essential oil after the alcohol evaporates and concentrates. According to the invention, the problems of element breakage, low recovery ratio and the like caused by extraction solvent residue and overlong extraction time in the traditional essential oil extraction technology can be solved, the cost is low, the production technology is simple, the yield is high and the preparation method is suitable for commercial production.

Description

technical field [0001] The invention relates to an essential oil extraction method, in particular to a preparation method for subcritical water extraction of fennel essential oil. Background technique [0002] European fennel (Pimpinella anisum L.) is native to continental Europe and the west coast of the United States. Fennel is a perennial herb of Umbelliferae, with yellow flowers, sown in spring and autumn, with a growth period of 100 days, and is resistant to cold, drought and barrenness. It has a special fragrance, and the stems and leaves are edible. The leaves can nourish the brain and improve memory. They can also be used as ingredients for seafood and salads to increase the taste. The seeds can be used to flavor bread, coffee, fish sauce, etc. The seeds can be chewed to freshen the breath and help digestion and resolve constipation. Germination of leaves, stems, seeds [0003] Afterwards, it can be mixed with cold dishes. The essential oil can be used to make t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10
Inventor 李建华
Owner SUZHOU TIANLING CHINESE TRADITIONAL MEDICINE SLICE
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