Method for preparing high-purity Hangzhou white chrysanthemum essential oil

A high-purity, Chrysanthemum white chrysanthemum technology is applied in the direction of essential oils/fragrances, fat production, etc., which can solve the problems of low extraction yield and purity, easy residual harmful solvents, and damage to aroma quality, so as to achieve simple operation, avoid heat damage, Effect of preventing oxidation and dissipation

Active Publication Date: 2014-12-03
HUBEI CHINA TOBACCO IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Our country has abundant plant-based natural spice resources, but due to the backward extraction technology, only part of the spice resources have been developed and utilized
Many plant-based natural f

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of high-purity Chrysanthemum chrysanthemum essential oil of the present invention, its steps are as follows:

[0027] (1) Get 3 kg of white chrysanthemum raw material, spray it with 300 kg of water, and keep it at room temperature for 5 hours; place the white chrysanthemum that has been sprayed in a vacuum freeze dryer for pre-freezing, set the temperature at -25 ° C, keep 0.5h; the temperature for sublimation drying by vacuuming is -15°C, and keep for 1h; use a pulverizer to pulverize the freeze-dried Chrysanthemum chrysanthemum to 80 mesh;

[0028] (2) The Chrysanthemum chrysanthemum raw material after pulverizing is packed in the extraction kettle, and the CO of the supercritical state of 5kg / h flow velocity is added 2 Inject into the extraction kettle, and extract for 2 hours under the conditions of extraction pressure 20MPa and extraction temperature 30°C to obtain the crude oil extracted by supercritical fluid of Chrysanthemum chrysanthemum....

Embodiment 2

[0031] The preparation method of high-purity Chrysanthemum chrysanthemum essential oil of the present invention, its steps are as follows:

[0032] (1) Get 5 kg of white chrysanthemum raw material, spray it with 500 kg of water, and keep it at room temperature for 8 hours; place the white chrysanthemum sprayed in a vacuum freeze dryer for pre-freezing, and set the temperature at -30°C. Keep it for 1 hour; the temperature for sublimation drying by vacuuming is -20°C, keep it for 2 hours; use a pulverizer to crush the freeze-dried Chrysanthemum chrysanthemum to 100 mesh;

[0033] (2) the chrysanthemum chrysanthemum raw material after pulverizing is packed in the extraction kettle, and then the NO of the supercritical state of 8kg / h flow velocity 2 Inject into the extraction kettle and extract for 4 hours under the conditions of extraction pressure 30MPa and extraction temperature 40°C to obtain the crude oil extracted by supercritical fluid of Chrysanthemum chrysanthemum.

[00...

Embodiment 3

[0036] The preparation method of high-purity Chrysanthemum chrysanthemum essential oil of the present invention, its steps are as follows:

[0037] (1) Get 8 kg of white chrysanthemum raw material, spray it with 800 kg of water, and keep it at room temperature for 10 hours; place the white chrysanthemum that has been sprayed in a vacuum freeze dryer for pre-freezing, and set the temperature at -35°C. Keep it for 2 hours; the temperature for sublimation drying by vacuuming is -25°C, keep it for 3 hours; use a pulverizer to pulverize the freeze-dried Chrysanthemum chrysanthemum to 120 mesh;

[0038] (2) The Chrysanthemum chrysanthemum raw material after pulverizing is packed in the extraction kettle, and the CO of the supercritical state of 10kg / h flow velocity is added 2 Inject into the extraction kettle, and extract for 6 hours under the conditions of extraction pressure 50MPa and extraction temperature 60°C to obtain the crude oil extracted by supercritical fluid of Chrysanth...

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Abstract

The invention discloses a method for preparing high-purity Hangzhou white chrysanthemum essential oil. The method comprises the following steps: (1) carrying out spraying treatment on Hangzhou white chrysanthemum raw materials by using water; (2) pre-freezing the Hangzhou white chrysanthemum after being subjected to the spraying treatment and carrying out vacuum sublimation drying; (3) smashing the Hangzhou white chrysanthemum after being subjected to the freeze drying; (4) putting the smashed Hangzhou white chrysanthemum raw materials and a fluid in a super-critical state into an extraction kettle and extracting to obtain Hangzhou white chrysanthemum crude oil through supercritical fluid extraction; and (5) purifying and separating the Hangzhou white chrysanthemum crude oil obtained through the supercritical fluid extraction through secondary molecular distillation to collect the high purity Hangzhou white chrysanthemum essential oil. The method has the advantages that the shortages of traditional extraction methods are avoided and effective constituents of plants are protected from being heated and damaged to the maximum limit; the extraction requirements of rapidness, high efficiency, fullness and completeness are achieved; and the method is simple and convenient in operation and high in separating speed and the working efficiency is greatly increased.

Description

technical field [0001] The invention relates to the technical field of extracting natural plant essential oils, in particular to a preparation method of high-purity chrysanthemum essential oil. Background technique [0002] Our country has rich botanical natural spice resources, but due to the backward extraction technology, only part of the spice resources have been developed and utilized. Many plant-based natural flavors can only be initially extracted, and the extraction yield and purity are low, the quality of aroma is seriously damaged, and harmful solvents are easy to remain, resulting in a serious waste of resources. [0003] Supercritical fluid extraction and molecular distillation technology is a new generation of extraction technology in recent years. Supercritical fluid extraction is to use supercritical state fluid to have a special dissolution effect on some special natural products. It can be extracted under the cover of fluid close to room temperature and sup...

Claims

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Application Information

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IPC IPC(8): C11B9/02
Inventor 苗丽坤程书锋喻世涛肖龙恩熊国玺朱巍
Owner HUBEI CHINA TOBACCO IND
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