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Selenium-rich herbal coffee leaf tea and preparation method thereof

A technology of herbal coffee leaves and herbal coffee, which is applied in the field of food processing, can solve the problems that the aroma and taste of coffee leaves and tea cannot be brought out, and achieve the effects of uniform distribution of aroma and taste components, easy temperature control, and improved taste

Pending Publication Date: 2020-09-22
常德中旺农业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a selenium-enriched herbal coffee leaf tea and its preparation method, aiming to solve the problem that the existing preparation method cannot fully bring out the aroma and taste of the coffee leaf tea

Method used

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preparation example Construction

[0021] The embodiment of the present invention provides a preparation method of selenium-enriched herbal coffee leaf tea, comprising:

[0022] Using selenium-enriched herbal coffee leaves as raw materials, fresh leaves with complete buds and leaves, uniform size, and no pests and diseases are selected for use to ensure the quality of coffee leaves and tea.

[0023] Spread the screened coffee leaves flat to dry. The thickness of the spread leaves is 2-3cm. Remove impurities.

[0024] After drying, the coffee leaves are quickly heated to 270°C by infrared rays to finish greening, then stop heating and quickly cool to 110°C, and then heat to 180°C by infrared rays after the heat is dissipated. Ventilation during the heating process reduces the moisture content of coffee leaves to 35-49%, obtain the coffee leaf after finishing treatment.

[0025] Fixing at high temperature denatures and inactivates the polyphenol oxidase and peroxidase in coffee leaves, prevents the oxidation of...

Embodiment 1

[0033] The embodiment of the present invention provides a preparation method of selenium-enriched herbal coffee leaf tea, comprising:

[0034] Selenium-enriched herbal coffee leaves are used as raw materials, and fresh leaves with complete buds and leaves, uniform size, and no disease and insect leaves are selected for use.

[0035] The coffee leaves screened out were spread flat and air-dried, the thickness of the spread leaves was 2cm, the air-drying temperature was 25°C, the air-drying time was 90min, and the moisture content of the controlled coffee leaves was 65%.

[0036] After drying, the coffee leaves are quickly heated to 270°C by infrared rays, and the heating rate is 30°C / min. Then stop heating and quickly cool to 110°C. The cooling rate is 10°C / min. to 180° C., the heating rate is 5° C. / min, and ventilation is performed during the heating process, so that the water content of the coffee leaves is reduced to 35%, and the coffee leaves after greening treatment are ob...

Embodiment 2

[0041] The embodiment of the present invention provides a preparation method of selenium-enriched herbal coffee leaf tea, comprising:

[0042] Selenium-enriched herbal coffee leaves are used as raw materials, and fresh leaves with complete buds and leaves, uniform size, and no disease and insect leaves are selected for use.

[0043] The coffee leaves screened were spread flat to dry, the thickness of the spread leaves was 3cm, the temperature of the leaves was 30°C, the time of drying was 120min, and the moisture content of the coffee leaves was controlled to be 75%.

[0044] After drying, the coffee leaves are quickly heated to 270°C by infrared rays, and the heating rate is 35°C / min, then stop heating and quickly cool to 110°C, the cooling rate is 15°C / min, and then heat by infrared rays after the heat is dissipated. to 180° C., the heating rate is 10° C. / min, and ventilation is performed during the heating process, so that the water content of the coffee leaves is reduced t...

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Abstract

The invention is suitable for the technical field of food processing, and provides selenium-rich herbal coffee leaf tea and a preparation method thereof. The preparation method comprises the steps ofscreening, airing, enzyme deactivating, rolling and oven-drying. In the preparation method, enzyme deactivating at a high temperature is performed to make enzymes in coffee leaves be denatured and inactivated, and polyphenol substances are prevented from being oxidized so as to prevent the leaves from becoming red. Infrared heating is adopted for enzyme deactivating, so that the coffee leaves canbe evenly heated, the sterilization effect is achieved, and the temperature is easy to control. A manner of rapid cooling after rapid heating is performed, so that the denaturation and inactivation ofthe enzymes can be guaranteed, chlorophyll in the coffee leaves can be prevented from being damaged due to the fact that the coffee leaves are treated for a long time at the high temperature, and thereby the quality of the coffee leaf tea can be prevented from being reduced. The water content of the coffee leaves after enzyme deactivating is gradually reduced in a multi-time rolling-baking manner, at the same time, after each time of rolling, a coffee leaf juice is squeezed to be attached to the surfaces of the leaves, and is fixed through baking, the aroma and taste components in the coffeeleaves can be evenly distributed through multi-time rolling-baking, and thereby the taste of the coffee leaf tea can be improved.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a selenium-enriched herbal coffee leaf tea and a preparation method thereof. Background technique [0002] Herbal coffee is a kind of wild leguminous plant, also known as Zuomang cassia, which belongs to the subfamily of mangosiaceae and belongs to the genus Jumonia. After many years of selection and breeding by Chinese scientific and technological personnel, Zuomang Cassia has cultivated herbal coffee. [0003] Herbal coffee leaf tea is made from herbal coffee leaves. In recent years, consumers have begun to drink herbal coffee leaf tea in addition to drinking herbal coffee beverages. Herbal coffee leaf tea is rich in nutrition, containing starch, protein, amino acid, caffeine, fat, zinc, calcium, iron, selenium and other nutrients. The selenium-enriched herbal coffee leaf tea has higher selenium content, is rich in nutrition, and has obvious health care ef...

Claims

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Application Information

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IPC IPC(8): A23F3/34
CPCA23F3/34
Inventor 胡淑云邓正春傅阳冒锐
Owner 常德中旺农业股份有限公司
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