Method for extracting tea essential oil from oolong tea stalks

A technology for tea essential oil and oolong tea, which is applied in the field of extracting tea essential oil by using oolong tea stems, can solve the problems of low content of tea essential oil and high cost of extracting tea essential oil, and achieves the effects of less impurity content, avoiding water replenishment process and high efficiency

Active Publication Date: 2012-06-20
HUAXIANG YUAN TEA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tea essential oil is usually obtained by extracting tea leaves. However, the tea itself has high economic value and the essential oil content in tea leaves is extremely low. Therefore, a large amount of tea leaves are usually required as raw materials in the process of obtaining tea essential oils, resulting in the cost of extracting tea essential oils. very high

Method used

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  • Method for extracting tea essential oil from oolong tea stalks
  • Method for extracting tea essential oil from oolong tea stalks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 40 g of pulverized tea stems into a 250 mL round bottom flask 11, add 160 mL of distilled water, and adjust the temperature of the electric heating mantle 12 to 95°C. At the same time, 120 mL of petroleum ether was placed in a 250 mL round bottom flask 21, and the temperature of the electric heating mantle 22 was adjusted to 40°C. After the tea steam in the round bottom flask 11 reaches the air storage bag 4 through the glass conduit 13, it is mixed with the petroleum ether vapor that reaches the air storage bag 4 through the glass conduit 23 in the round bottom flask 21, and enters the condensation pipe 3 to condense, and the condensate Backflow to the 150mL separatory funnel 5, open the main on-off valve 53 and the first reflux on-off valve 51 of the separatory funnel 5 every 12 minutes to reflux the lower layer aqueous solution into the flask 11, when the aqueous solution is exhausted, first close the total switch valve 53, and then close the first backflow swi...

Embodiment 2

[0031] Weigh 30 g of pulverized tea stems into a 250 mL round bottom flask 11, add 180 mL of distilled water, and adjust the temperature of the electric heating mantle 12 to 100°C. At the same time, 150 mL of petroleum ether was placed in a 250 mL round bottom flask 21, and the temperature of the electric heating mantle 22 was adjusted to 60°C. After the tea steam in the round bottom flask 11 reaches the air storage bag 4 through the glass conduit 13, it is mixed with the petroleum ether vapor that reaches the air storage bag 4 through the glass conduit 23 in the round bottom flask 21, and enters the condensation pipe 3 to condense, and the condensate Backflow to the 150mL separatory funnel 5, open the main switch valve 53 and the first reflux switch valve 51 of the separatory funnel 5 every 8 minutes to return the lower aqueous solution to the flask 11, when the aqueous solution is drained, first close the total switch valve 53, and then close the first backflow switch valve ...

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Abstract

The invention discloses a method for extracting tea essential oil from oolong tea stalks. The method comprises the following steps of: putting the oolong tea stalks serving as raw materials into a tea stalk distillation device, adding distilled water, and distilling; measuring petroleum ether, adding into a petroleum ether distillation device, and distilling; connecting the tea stalk distillation device and the petroleum ether distillation device through a glass guide pipe, fully mixing volatile gas distilled from the tea stalks and petroleum ether steam in a gas storage bag, introducing mixed steam into a condensation pipe, condensing to form oil-water mixed liquid, and refluxing the mixed liquid to a separating funnel; refluxing a water phase and an oil phase in the separating funnel to a first flask and a second flask respectively, so that the circular extraction process is finished once; repeating the process to fully extract the essential oil from the tea stalks; and taking the second flask with the petroleum ether out, concentrating a solution in the second flask, and collecting to obtain tea essential oil paste. By the method, the extraction cost of the tea essential oil can be reduced, and the economic benefit of tea processing is improved.

Description

[0001] Technical field [0002] The present invention involves the method of extract of tea essential oils, and specifically involves a method to extract tea essential oil with oolong tea stalks. [0003] Background technique [0004] The concentration of tea aroma elements is called essential oil or tea essential oil, and the content is extremely low.Tea essential oils have strong anti -infection, anti -inflammatory sterilization, treatment of colds, cough, and athletes.Tea essential oils are usually extracted from tea. However, tea itself has high economic value, and the essential oil content in tea is extremely low. Therefore, a large amount of tea is usually required as raw materials in the process of obtaining tea essential oils, resulting in the cost of extracting tea essential oilExtremely high.Therefore, it is of great significance to find a cheap tea essential oil extraction and establish a comprehensive method of tea essential oil extraction. [0005] Tea stalks contain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 何素萍王海斌陈荣山谢基雄张宁叶陈英叶秋萍
Owner HUAXIANG YUAN TEA IND
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