Method for extracting cinnamomum longepaniculatum leaf essential oil

An extraction method, the technology of camphor leaves, which is applied in the field of extraction of camphor leaf essential oil, can solve the problems of low purity, low extraction rate, high impurity content, etc., and achieve the effect of obvious smell, improved extraction rate, and good quality of essential oil

Inactive Publication Date: 2019-04-12
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0005] Therefore, in view of the problems existing in the prior art and the emergence of new extraction techniques, it is necessary for us to develop a method for extracting camphor leaf essential oil to solve the problems of low extraction rate, high impurity content and low purity in the extraction of camphor essential oil. The problem

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  • Method for extracting cinnamomum longepaniculatum leaf essential oil

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Embodiment 1

[0031] The invention provides a method for extracting camphor leaf essential oil, which is carried out in the following steps:

[0032] (1) Drying: put the camphor leaves at room temperature and dry them in the shade out of light until the water content is 3%.

[0033] (2) Pulverization: pulverize the dried camphor tree leaves with a pulverizer, and pass through a 20-mesh sieve to obtain camphor camphor leaf powder.

[0034] (3) Enzymolysis: Add appropriate amount of water and cellulase to the camphor leaf powder obtained in step (2), the mass ratio of the added water to the camphor leaf powder is 8:1, and the consumption of the cellulase is 0.5 %, after stirring evenly, place it in a water bath at 45°C for 1 h, and keep stirring during this period.

[0035] (4) Simultaneous distillation and extraction: the connection is as good as figure 1 The simultaneous distillation and extraction device shown in the figure performs simultaneous distillation and extraction on the mixture...

Embodiment 2

[0040] The invention provides a method for extracting camphor leaf essential oil, which is carried out in the following steps:

[0041] (1) Drying: place the leaves of the camphor tree at room temperature and dry in the shade out of light until the water content is 4%.

[0042] (2) Pulverization: pulverize the leaves of camphor oleifera dried in the shade with a pulverizer, and pass through a 40-mesh sieve to obtain camphor leaf powder.

[0043] (3) Enzymolysis: Add appropriate amount of water and cellulase to the camphor leaf powder obtained in step (2), the mass ratio of the added water to the camphor leaf powder is 9:1, and the consumption of the cellulase is 0.6 %, after stirring evenly, place it in a water bath at 45°C for 1 h, and keep stirring during this period.

[0044] (4) Simultaneous distillation and extraction: the connection is as good as figure 1 The simultaneous distillation and extraction device shown, the specific steps are the same as in Example 1. The mixtu...

Embodiment 3

[0049] The invention provides a method for extracting camphor leaf essential oil, which is carried out in the following steps:

[0050] (1) Drying: place the leaves of camphor oleifera at room temperature and dry in the shade out of light until the water content is 5%.

[0051] (2) Pulverization: pulverize the dried camphor tree leaves with a pulverizer, and pass through a 60-mesh sieve to obtain camphor camphor leaf powder.

[0052] (3) Enzymolysis: Add appropriate amount of water and cellulase to the camphor leaf powder obtained in step (2), the mass ratio of the added water to the camphor leaf powder is 10:1, and the consumption of the cellulase is 0.6 %, after stirring evenly, place it in a water bath at 45°C for 1 h, and keep stirring during this period.

[0053] (4) Simultaneous distillation and extraction: the connection is as good as figure 1 The simultaneous distillation and extraction device shown, the specific steps are the same as in Example 1, the mixture obtain...

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Abstract

The invention provides a method for extracting cinnamomum longepaniculatum leaf essential oil. The method comprises the following steps of A, pulverizing, wherein dried cinnamomum longepaniculatum leaves are pulverized and screened to obtain cinnamomum longepaniculatum leaf powder; B, enzymolysis, wherein an appropriate amount of water and cellulase are added into the cinnamomum longepaniculatum leaf powder obtained in the step A, water bath treatment is executed after even stirring, and continuous stirring is executed in the process; C, simultaneous distillation and extraction, wherein the mixture obtained in step B is simultaneously distilled and extracted in an organic solvent; D, oil-water separation and solvent removal, wherein an organic solvent phase is obtained through separation after the treatment in the step C, and then the organic solvent is removed to obtain crude extracted essential oil; E, dehydration, wherein the crude extracted essential oil obtained in the step D is subjected to dehydration treatment to obtain the essential oil. The essential oil in the cinnamomum longepaniculatum leaves can be fully released out by pulverization and cellulase treatment; meanwhile, the essential oil which is dissolved in a water phase by a conventional steam distillation can be extracted out by adopting a distillation extraction method. Thereby, the extraction rate of the cinnamomum longepaniculatum leaf essential oil can be significantly improved, and a cinnamomum longepaniculatum leaf essential oil product with better quality can be obtained.

Description

technical field [0001] The invention relates to the technical field of essential oil extraction; in particular, it relates to a method for extracting camphor leaf essential oil. Background technique [0002] Oil camphor (Cinnamomum longipaniculatum (Gamble) N.Chao ex H.W.Li) is an evergreen tree belonging to the genus Cinnamomum lauraceae. It is specially produced in Sichuan and western Shaanxi, and is naturally distributed in evergreen broad-leaved forests at an altitude of 600-2000m. Camphor oil is a plant volatile oil extracted from the leaves, branches or roots of the camphor tree, and the actual production is mainly based on the extraction of leaves. The content of volatile oil in camphor leaves is 3.8-4.5%, and also contains flavonoids, polysaccharides, steroids and glycosides. Camphor oil is mainly composed of terpenoids, and the main component is 1,8-cineole. Camphor oil is an important chemical raw material, which has the functions of antibacterial, insecticidal, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/02C11B9/027
Inventor 岳进尹浩焦顺山王丹凤王小红吴建军王晨笑
Owner SHANGHAI JIAO TONG UNIV
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