A kind of extraction method of tea chrysanthemum volatile oil

An extraction method and volatile oil technology, which are applied in the field of extraction of volatile oil from chrysanthemum for tea, can solve problems such as easy solidification, influence on yield, n-hexane residue, etc., and achieve the effects of improving scientific and technological content, shortening extraction time, and increasing added value.

Active Publication Date: 2018-05-15
JIANGHAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These factors not only affect the extraction and yield of volatile oil, but also affect the quality, value and quality stability of volatile oil, thus directly affecting the production cost and economic benefits of volatile oil
[0004] With the continuous development of technology, some new volatile oil extraction technologies are also being produced, but considering the extraction cost, output, operation, environmental protection, safety and other aspects, the selection of low cost, simple operation, environmental protection, and high product safety factor The steam distillation method to extract the volatile oil of chrysanthemum for tea is the method commonly used in the volatile oil extraction process at present, but in the extraction process, the coking of the chrysanthemum fragments directly affects the quality and color of the volatile oil under the azeotropic condition of the extract; in addition, the melting point of the volatile oil is relatively high Low, it is easy to solidify at room temperature, and the distilled volatile oil will adhere to the inner wall of the measuring device, resulting in low analysis results; at the same time, with the prolongation of the extraction time, some volatile oil components with higher density will continue to accumulate, resulting in the volatile oil falling Shen is not easy to collect
The Chinese invention patent with application number 200810019638.4 discloses the preparation method of chrysanthemum volatile oil. During the extraction process, cyclohexane is used to dissolve the volatile oil, and then the n-hexane is removed by natural volatilization. If the volatilization is not complete, some n-hexane residues will be formed. In the process of human use in the future, it will cause certain toxicity and affect the health of users
Moreover, in this application, it is necessary to keep the liquid in a slightly boiling state for 10-15 hours, which takes a long time and consumes a lot of energy. On the one hand, if the time is too long, some dense volatile oil components will continue to accumulate, and the volatile oil will sink and be difficult to collect; on the other hand, the volatile oil will condense. Adhering to the inner wall of the analyzer, affecting the yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] a. The acquisition of chrysanthemum powder for tea:

[0023] In mid-November every year when the chrysanthemums for tea bloom, when the outer 2-3 round-shaped flowers of the inflorescence are open, pick fresh flowers (without flower stalks) from the plants and spread them on the bamboo mat for 3-4 hours In order to remove the heat in the field, then place it layer by layer on the greening frame, and use water vapor to kill the green, and the time for killing the green is 1-2min. After the chrysanthemum for tea is greened, it is dried by airflow drying for 12 hours to obtain the dried flower material of chrysanthemum for tea, and the moisture content of the material is lower than 8%;

[0024] The dried flower material of chrysanthemum for tea is pulverized with a high-speed traditional Chinese medicine pulverizer, and the crushing time is 1-2min each time, and repeated 2-3 times to prevent the high temperature generated by high-speed rotation from destroying the nutritio...

Embodiment 2

[0028] a. The acquisition of chrysanthemum powder for tea:

[0029] In mid-November every year when the chrysanthemums for tea bloom, when the outer 2-3 round-shaped flowers of the inflorescence are open, pick fresh flowers (without flower stalks) from the plants and spread them on the bamboo mat for 3-4 hours In order to remove the heat in the field, then place it layer by layer on the greening frame, and use water vapor to kill the green, and the time for killing the green is 1-2min. After the chrysanthemum for tea is greened, it is dried by airflow drying for 16 hours to obtain the dried flower material of chrysanthemum for tea, and the moisture content of the material is lower than 8%;

[0030] The dried flower material of chrysanthemum for tea is pulverized with a high-speed traditional Chinese medicine pulverizer, and the crushing time is 1-2min each time, and repeated 2-3 times to prevent the high temperature generated by high-speed rotation from destroying the nutritio...

Embodiment 3

[0034] a. The acquisition of chrysanthemum powder for tea:

[0035] In mid-November every year when the chrysanthemums for tea bloom, when the outer 2-3 round-shaped flowers of the inflorescence are open, pick fresh flowers (without flower stalks) from the plants and spread them on the bamboo mat for 3-4 hours In order to remove the heat in the field, then place it layer by layer on the greening frame, and use water vapor to kill the green, and the time for killing the green is 1-2min. After the tea chrysanthemum is greened, it is dried by airflow drying for 14 hours to obtain the dried flower material of the tea chrysanthemum, and the moisture content of the material is lower than 7%;

[0036] The dried flower material of chrysanthemum for tea is pulverized with a high-speed traditional Chinese medicine pulverizer, and the crushing time is 1-2min each time, and repeated 2-3 times to prevent the high temperature generated by high-speed rotation from destroying the nutritional co...

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PUM

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Abstract

The invention discloses a method for extracting the volatile oil of chrysanthemum for tea, which comprises the following steps: obtaining chrysanthemum powder for tea; extracting the volatile oil of chrysanthemum for tea; and obtaining the volatile oil of chrysanthemum for tea. The present invention utilizes the steam distillation method to extract the volatile oil of chrysanthemum for dry tea, and through the steam distillation method, the volatile components are distilled out together with the water vapor, and then the volatile components are separated by condensation, the equipment is simple and convenient, and the extraction cost of the volatile oil is reduced. cost. The distillation time is short and only sodium chloride solution is used as the extractant. The whole process is environmentally friendly and energy-saving, and the cumbersome steps of filtration, decompression, concentration, alcohol precipitation, and purification when using organic solvents are reduced. At the same time, it avoids pollution of volatile oil caused by incomplete removal of organic solvent, so as to avoid impact on human safety in later use.

Description

technical field [0001] The invention relates to a method for extracting volatile oil, in particular to a method for extracting volatile oil from chrysanthemum flowers for tea. Background technique [0002] Chrysanthemum morifolium for tea (Chrysanthemum morifolium) is a perennial herbaceous flower of the genus Chrysanthemum in the family Compositae. my country's tea chrysanthemum resources are very rich, mainly including 'Hangzhou white chrysanthemum', 'Gongju', 'Chuju', 'Huaiju', 'Yeju', 'Shennongxiangju' and other species or varieties. The main components of chrysanthemum for tea are volatile oil, flavonoid glycosides, coumarin, alkaloids, various amino acids necessary for human body, vitamins, and various macro and trace elements. Heat, calm liver yang, lower fat and blood pressure, lose weight and beautify, resist aging and prolong life. Volatile oil, also known as essential oil, is one of the main functional components of chrysanthemum for tea. It has antibacterial, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/02
CPCC11B9/027
Inventor 蒋细旺宋彦丽
Owner JIANGHAN UNIVERSITY
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