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Tea leaf aroma extraction method and application

An extraction method and technology of tea leaves, which are applied in the field of food and beverages, can solve the problems of undiscovered patent publications, etc., and achieve the effects of shortening the pretreatment time, reducing the number of uses, and simple steps

Inactive Publication Date: 2014-02-19
上海康识食品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Through the search, no patent publications related to this patent application were found

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  • Tea leaf aroma extraction method and application
  • Tea leaf aroma extraction method and application
  • Tea leaf aroma extraction method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A method for extracting tea aroma, the steps are as follows:

[0053] 1. Tea aroma is extracted by steam distillation in microwave water

[0054] Put 50.0g of tea leaves such as cinnamon oolong tea or its related product samples and deionized water into the sample bottle according to the mass ratio of sample: deionized water of 1:5-10, and heat the sample bottle with microwave as the heat source under stirring conditions. Microwave heating, the microwave power is 200W, and the temperature of the control system is at 90°C. After the distillate is condensed by the condenser, it is continuously heated until there is no distillate. The whole extraction process lasted for 60 minutes, and then 10-15 ml of the tea aroma extract was taken out from the volatile oil collector, collected and protected from light for later use.

[0055] The schematic diagram of the device for extracting tea aroma by steam distillation in microwave water is shown in Picture 1-1 . Wherein, the i...

Embodiment 2

[0069] A method for extracting tea aroma, the steps are as follows:

[0070] 1. Microwave water steam distillation extracts tea aroma

[0071] Put 50.0 g of cinnamon oolong tea or related tea products into a steam generating bottle filled with deionized water (1 / 2 bottle volume) and some glass beads (to prevent bumping), and use microwave as a heat source to heat the steam generating bottle Carry out microwave heating, microwave power is 400W, control system temperature at 90 ℃. The distillate is condensed by the condenser tube, and the heating is continued until there is no distillate. The whole experiment process lasted 45 min. Then take out about 10-15 milliliters of the tea aroma extract from the volatile oil collector, collect and keep away from light for later use.

[0072] The schematic diagram of the device for extracting tea aroma by steam distillation over microwave water is shown in Figure 1-2 . Wherein, glass beads 6 for anti-bumping are housed in the water v...

Embodiment 3

[0085] A method for extracting tea aroma, the steps are as follows:

[0086] 1. Solvent-free microwave steam distillation to extract tea aroma

[0087] Put 50.0 g cinnamon oolong tea sample into the sample bottle, and spray the tea leaves with an appropriate amount of deionized water to make the surface wet (humidity is controlled between 10%-30%). The device is the same as in Example 1. Under stirring conditions, microwave The extraction bottle was heated by microwave as a heat source, the microwave power was 200W, and the temperature of the control system was 90°C. The distillate is condensed by the condenser tube, and the heating is continued until there is no distillate. The whole experiment process took 15 minutes. Collect the volatile oil to obtain tea aroma extract (10-15 ml), keep away from light for later use.

[0088] 2. Purification of tea aroma

[0089] ①Concentrate the tea aroma extract under reduced pressure at 45°C and 40-60mbar to obtain a concentrate, pass...

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Abstract

The invention relates to a tea leaf aroma extraction method comprising the following steps of: (1) extracting the tea leaf aroma by taking microwave as a heat source to obtain a tea leaf aroma extracting solution; and (2) carrying out vacuum concentration on the tea leaf aroma extracting solution to obtain a concentrated solution; filtering the concentrated solution to obtain a filtrate; adsorbing the filtrate by using silver nitrate complex silica gel, and then, eluting by using absolute ethyl alcohol to obtain a tea leaf aroma eluant, namely tea leaf aroma. According to the method provided by the invention, the microwave is used as the heat source, the longest extraction time is up to 60minutes, and therefore, the possibility of generating bad flavor is greatly reduced, and the yield is increased by 2-3 times as comparison with that of the traditional steam distillation method; and in addition, the method is short in treatment time, simple in steps and capable of shortening the pretreatment time.

Description

technical field [0001] The invention belongs to the field of food and beverages, and relates to a method for extracting plant aroma, in particular to an extraction method and application of tea aroma. Background technique [0002] Tea drink has gradually become a popular drink, and is very popular among consumers because of its multiple nutritional and health functions. Tea aroma is the main component of tea quality and an important sensory evaluation index. With the development of modern instrumental analysis techniques, the research on tea aroma and its components has made great progress. Many new compounds that play an important role in the aroma quality of tea were gradually identified although their concentration was low. [0003] The chemical components of tea aroma can be divided into four categories according to their structural characteristics: (1) Fatty derivatives, the representative compound is (Z)-3-hexenol, and there are also jasmone, β-ionone, etc. Alicycli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/02G01N30/02
Inventor 刘宏陈依妍范艳红章啓鹏罗之纲
Owner 上海康识食品科技有限公司
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