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A method for extracting high-purity linalool

A linalool, high-purity technology, applied in the field of extracting high-purity linalool, can solve the problems of low product yield and product quality, insufficient resource utilization, poor technical conditions, etc. Benefit and economic benefits, the effect of low equipment cost

Active Publication Date: 2018-09-28
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the production of natural linalool in my country still adopts the method of steam distillation. Due to the backward technology and poor technical conditions, the product yield and product quality are low, and the resource utilization is extremely insufficient.

Method used

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  • A method for extracting high-purity linalool
  • A method for extracting high-purity linalool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for extracting high-purity linalool, comprising the following steps:

[0030] (1) Raw material pretreatment: Vacuum freeze-dry the fresh leaves of Cinnamomum camphora, crush them to 60 meshes, and obtain powdery materials;

[0031] (2) Solvent extraction: Open the feeding port of the extraction device, add 100kg of powdery material, and then add ethanol and ethyl acetate mixed solvent (ethanol and ethyl acetate The weight ratio is 2:1), cover the feeding port cover, turn on the heater and pump power supply, heat up and cycle extraction, control the temperature at 50 ° C, cycle leaching for 2 hours, discharge the material from the discharge port, and remove the residue after conventional filtration , to get the crude product; the cyclic extraction passes through 6 accelerated leaching mixing zones of pump pressure mixing, nozzle jet mixing, mixing tube mixing, cover reflective mixing, tank flow mixing and pipeline flow mixing to strengthen the leaching of active...

Embodiment 2

[0037] A method for extracting high-purity linalool, comprising the following steps:

[0038] (1) Raw material pretreatment: Vacuum freeze-dry the fresh leaves of Cinnamomum camphora, crush them to 60 meshes, and obtain powdery materials;

[0039] (2) Solvent extraction: Open the feeding port of the extraction device, add 100kg of powdery material, and then add ethanol and ethyl acetate mixed solvent (ethanol and ethyl acetate The weight ratio is 3:1), cover the feeding port cover, turn on the heater and pump power supply, heat up and cycle extraction, control the temperature at 60 ° C, cycle leaching for 1 hour, discharge the material from the discharge port, and remove the residue after conventional filtration , to get the crude product; the cyclic extraction passes through 6 accelerated leaching mixing zones of pump pressure mixing, nozzle jet mixing, mixing tube mixing, cover reflective mixing, tank flow mixing and pipeline flow mixing to strengthen the leaching of active ...

Embodiment 3

[0045] A method for extracting high-purity linalool, comprising the following steps:

[0046](1) Raw material pretreatment: Vacuum freeze-dry the fresh Cinnamomum camphora leaves, crush them to 80 meshes, and obtain powdery materials;

[0047] (2) Solvent extraction: Open the feeding port of the extraction device, add 100kg of powdery material, and then add ethanol and ethyl acetate mixed solvent (ethanol and ethyl acetate The weight ratio is 2:1), cover the feeding port cover, turn on the heater and pump power supply, heat up and cycle extraction, control the temperature at 50°C, cycle leaching for 3 hours, discharge the material from the discharge port, and remove the residue after conventional filtration , to get the crude product; the cyclic extraction passes through 6 accelerated leaching mixing zones of pump pressurization mixing, nozzle jet mixing, mixing tube mixing, cover reflective mixing, tank flow mixing and pipeline flow mixing to strengthen the leaching of active...

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Abstract

The invention discloses a method for extracting high-purity linalool. The method comprises the steps that fresh camphor leaves are subjected to vacuum freezing drying treatment and smashed to be 60-80 meshes; a charging opening of a digestion device is opened, an ethyl alcohol and ethyl acetate mixed solvent is added on the basis of the powdery material to solvent weight ratio being 4-8:1, and residues are removed after conventional filtering to obtain a crude product; the crude product is placed into a distillation tank, distillation is performed under the temperature of 75-78 DEG C, and crude camphor essence oil is obtained; the crude camphor essence oil is dried through anhydrous sodium sulfate, and then conventional filtering is performed to obtain an extract; finally, vacuum concentration is performed in a rotary evaporator to obtain high-purity linalool. The method has the advantages of being high in extraction efficiency and product quality, simple in technology, low in cost and the like. The yield of linalool reaches 1.8-2.2%, the purity reaches 99.8% or above, the fragrance is good, the good social and economic benefits are achieved, and the method is worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of natural plant active ingredient extraction, in particular to a method for extracting high-purity linalool. Background technique [0002] Camphor tree essential oil is generally a colorless or light yellow oily transparent liquid at room temperature, some components can precipitate solid components at room temperature, have a strong special smell, have strong volatility, and mostly have high refractive index and optical rotation ; Specific gravity in O. Between 86-1.065; almost insoluble in water, completely soluble in absolute ethanol, soluble in ether, chloroform, petroleum ether and other less polar organic solvents, sensitive to air, light and temperature, volatile break down. [0003] The most abundant in camphor tree essential oil is linalool, also known as linalool, linalool, etc. Its scientific name is 3,7-dimethyl-1,6-octadien-3-ol, and its chemical formula is C 10 h 18 O. Linalool is a colo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C33/02C07C29/76C07C29/80B01D11/02
CPCB01D11/0249B01D11/0284B01D11/0288C07C29/76C07C29/80C07C33/02
Inventor 杨素华安家成陆顺忠李秋庭邱米黎贵卿杨漓吴建文关继华苏骊华党中广
Owner GUANGXI FORESTRY RES INST
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