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Preparation method and applications of natural plant hydrolat

A technology of natural plant pure dew and pure dew, which is applied in the field of natural product extraction, and can solve the problems of low quality of plant pure dew, boiled smell, etc.

Pending Publication Date: 2019-07-26
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the preparation of plant pure dew is basically obtained from the by-products in the processing of plant essential oils. The target product prepared by the method is plant essential oils. Therefore, in terms of process considerations, the yield and quality of plant essential oils are considered to the greatest extent. During the preparation process, the material is long. The time is kept above 100°C. Due to the effect of high temperature, many substances are decomposed, so the plant hydrosol prepared as a by-product is not high in quality, and even has a boiled smell.

Method used

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  • Preparation method and applications of natural plant hydrolat
  • Preparation method and applications of natural plant hydrolat
  • Preparation method and applications of natural plant hydrolat

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preparation example Construction

[0026] The first aspect of the present invention provides a method for preparing natural plant hydrosol, at least including the following steps,

[0027] (1) Raw material pretreatment: select uniform, non-rotten plant raw materials, remove impurities, and pulverize to obtain plant raw material powder;

[0028] (2) Supercritical CO 2 Extraction: put the plant raw material powder into the extraction kettle for supercritical CO 2 extraction;

[0029] (3) Pure dew collection: put deionized water in the separation kettle, 2 After the extraction is completed, the extraction kettle is depressurized, and the CO in the extraction kettle is 2 The entrained plant components are released into the separation tank to form upper and lower layers, the upper layer is an essential oil layer, and a saturated aqueous solution is obtained in the lower layer, and the aqueous solution in the separation tank is collected repeatedly to obtain a pure dew aqueous solution;

[0030] (4) Purification ...

Embodiment 1

[0057] A preparation method of natural plant pure dew, at least comprising the following steps,

[0058] (1) Raw material pretreatment: select uniform, non-rotten plant raw materials, remove impurities, and pulverize to obtain plant raw material powder;

[0059] (2) Supercritical CO 2 Extraction: put the plant raw material powder into the extraction kettle for supercritical CO 2 extraction;

[0060] (3) Pure dew collection: put deionized water in the separation kettle, 2 After the extraction is completed, the extraction kettle is depressurized, and the CO in the extraction kettle is 2 The entrained plant components are released into the separation tank to form upper and lower layers, the upper layer is an essential oil layer, and a saturated aqueous solution is obtained in the lower layer, and the aqueous solution in the separation tank is collected repeatedly to obtain a pure dew aqueous solution;

[0061] (4) Pure dew refining: the collected pure dew aqueous solution is ...

Embodiment 2

[0064] A preparation method of natural plant pure dew, at least comprising the following steps,

[0065] (1) Raw material pretreatment: select uniform, non-rotten plant raw materials, remove impurities, and pulverize to obtain plant raw material powder;

[0066] (2) Supercritical CO 2 Extraction: put the plant raw material powder into the extraction kettle for supercritical CO 2 extraction;

[0067] (3) Pure dew collection: put deionized water in the separation kettle, 2 After the extraction is completed, the extraction kettle is depressurized, and the CO in the extraction kettle is 2 The entrained plant components are released into the separation tank to form upper and lower layers, the upper layer is an essential oil layer, and a saturated aqueous solution is obtained in the lower layer, and the aqueous solution in the separation tank is collected repeatedly to obtain a pure dew aqueous solution;

[0068] (4) Pure dew refining: the collected pure dew aqueous solution is ...

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Abstract

The invention belongs to the technical field of natural product extraction, and discloses a preparation method of a natural plant hydrolat. The preparation method comprises following steps: 1, raw material pre-treatment, wherein uniform unrotten plant raw materials are selected, impurities are removed, and crushing is carried out so as to obtain a plant raw material powder material; 2, supercritical CO2 extraction, wherein the plant raw material powder material is introduced into an extraction vessel for supercritical CO2 extraction; 4, hydrolat collecting, wherein, deionized water is introduced into a separation vessel, after supercritical CO2 extraction, the pressure in the extraction vessel is reduced, the CO2 and the extracted plant component are introduced into the separation vessel so as to obtain an upper layer phase and a lower layer phase, the upper layer phase is an essential oil layer, and the lower layer phase is a saturated aqueous solution, the saturated aqueous solutionin the separation vessel is collected so as to obtain a hydrolat aqueous solution; and 4, hydrolat refining, wherein the collected hydrolat aqueous solution is delivered through a chromatography column for filtering and impurity removing, an obtained filtrate is collected so as to obtain refined hydrolat.

Description

technical field [0001] The invention belongs to the technical field of natural product extraction, and more relates to a preparation method and application of natural plant pure dew. Background technique [0002] Plant pure dew refers to an aqueous solution separated during the process of extracting plant essential oils. Plant pure dew is generally prepared as a by-product in the process of extracting plant essential oils, and is usually prepared simultaneously during the process of extracting essential oils with water vapor. According to different densities, the oil and water are separated, and the separated oil layer is plant essential oil, and the water layer is plant pure dew. Because the ingredients of plant hydrosol are natural and pure, the aroma is light and pleasant, and it also contains a small amount of plant essential oil, which has a mild essential oil effect and is easily absorbed by the skin. volume increased. [0003] At present, the preparation of plant pu...

Claims

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Application Information

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IPC IPC(8): C11B9/02
CPCC11B9/025C11B9/022
Inventor 林丽静黄晓兵李积华周伟廖良坤
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI