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Extraction method for artemisia argyi essential oil

A wormwood essential oil and extraction technology, applied in the directions of essential oil/spice, fat production, etc., can solve the problems of high solvent consumption and low extraction purity, and achieve the effects of improving purity, improving extraction rate and purity, and reducing the generation of impurities

Pending Publication Date: 2019-03-22
贵州鼎立生物科技香料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of high solvent consumption and low extraction purity in the extraction of wormwood essential oil existing in the prior art, the present invention provides an extraction method of wormwood essential oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of extracting method of wormwood essential oil is characterized in that, comprises the following steps:

[0024] Step 1: Pretreatment of raw materials: weigh the wormwood leaves and put them into distilled water for ultrasonic treatment. After 10 minutes, replace the distilled water with ultrasonic treatment for 10 minutes. Repeat 2 to 3 times until it is cleaned, then dry and pulverize to obtain the raw material crushed material, and perform ultrasonic treatment The ultrasonic frequency is 25KHz. Using ultrasonic cleaning can easily and effectively remove protein, glucose and other impurities on the surface of wormwood leaves, reduce the generation of impurities in the extraction process of wormwood essential oil, and improve the purity of wormwood essential oil. Moreover, it avoids the use of traditional solvents, such as ethanol, sodium hydroxide aqueous solution and other cleaning methods to increase the extraction cost and these solvents remain on the surface...

Embodiment 2

[0031] A kind of extracting method of wormwood essential oil is characterized in that, comprises the following steps:

[0032] Step 1: Pretreatment of raw materials: weigh the wormwood leaves and put them into distilled water for ultrasonic treatment. After 10 minutes, replace the distilled water with ultrasonic treatment for 10 minutes. Repeat 2 to 3 times until it is cleaned, then dry and pulverize to obtain the raw material crushed material, and perform ultrasonic treatment The ultrasonic frequency is 30KHz. Using ultrasonic cleaning can easily and effectively remove protein, glucose and other impurities on the surface of wormwood leaves, reduce the generation of impurities in the extraction process of wormwood essential oil, and improve the purity of wormwood essential oil. Moreover, it avoids the use of traditional solvents, such as ethanol, sodium hydroxide aqueous solution and other cleaning methods to increase the extraction cost and these solvents remain on the surface...

Embodiment 3

[0039] A kind of extracting method of wormwood essential oil is characterized in that, comprises the following steps:

[0040] Step 1: Pretreatment of raw materials: weigh the wormwood leaves and put them into distilled water for ultrasonic treatment. After 10 minutes, replace the distilled water with ultrasonic treatment for 10 minutes. Repeat 2 to 3 times until it is cleaned, then dry and pulverize to obtain the raw material crushed material, and perform ultrasonic treatment The ultrasonic frequency is 35KHz. Ultrasonic cleaning can easily and effectively remove protein, glucose and other impurities on the surface of wormwood leaves, reduce the generation of impurities in the extraction process of wormwood essential oil, and improve the purity of wormwood essential oil. Moreover, it avoids the use of traditional solvents, such as ethanol, sodium hydroxide aqueous solution and other cleaning methods to increase the extraction cost and these solvents remain on the surface of worm...

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Abstract

The invention discloses an extraction method for artemisia argyi essential oil. The method comprises the following steps: raw material pretreatment, microwave assisted extraction, compound enzyme assisted extraction, steam distillation extraction, condensation and refining. According to the method, artemisia argyi leaves are placed in distilled water for ultrasonic cleaning, so that impurities such as protein and glucose can be simply, conveniently and effectively removed from surfaces of the artemisia argyi leaves, the generation of the impurities during essential oil extraction is reduced, the aim of improving purity of the essential oil is achieved, and extraction cost increase resulting from traditional solvent cleaning and the influence on the purity of the essential oil caused by solvent residual are avoided. Then, microwave assisted extraction, compound enzyme assisted extraction, steam distillation extraction and molecular distillation are combined, cell wall rupture and localswelling of intercellular substances are achieved by microwave assisted extraction and compound enzyme assisted extraction, and thus, intracellular substances are more easily dissolved out; subsequently, the essential oil is thoroughly refined by steam distillation extraction; finally, refining is carried out by molecular distillation, the separation of lightweight molecules from heavy molecules is achieved by dint of difference among mean free paths of molecular movement of different substances, and thus, the purity of the artemisia argyi essential oil is greatly improved.

Description

technical field [0001] The invention relates to the technical field of plant essential oil extraction, in particular to an extraction method of wormwood essential oil. Background technique [0002] The essential oil extraction method refers to the method of extracting essential oils from plants. Common essential oil extraction methods include steam distillation, freeze compression (pressing), chemical solvent extraction, oil separation (fat absorption), carbon dioxide extraction, and immersion. Among them, steam distillation is the most commonly used method for extracting aromatic plant essential oils, and 95% of aromatic plant essential oils are extracted by distillation. This method is to put the plant parts (flowers, leaves, wood chips, resin, root bark, etc.) containing aromatic substances into a large container (distiller), and heat combustion or pass steam at the bottom of the container. When the hot steam fills the container, the aromatic essential oil components in...

Claims

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Application Information

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IPC IPC(8): C11B9/02
CPCC11B9/025C11B9/027
Inventor 潘焕玲
Owner 贵州鼎立生物科技香料有限公司
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