Selenium-rich green tea and its producing method

Abstract

The present invention belongs to the field of tea production technology. It discloses a method for producing selenium-enriched green tea by utilizing selenium-enriched nutrient solution. Said selenium-enriched nutrient solution is made up by using inorganic salt mineral element sodium selenite or sodium selenate as raw material through a certain preparation process. The selenium content of said selenium-enriched green tea is 1-7.5 microgram / gram, and the organic coversion rate of selenium is up to above 80%.

Description

technical field

[0001] The invention belongs to the technical field of tea production, in particular to a selenium-enriched green tea and a production method thereof. Background technique

[0002] Tea is an agricultural product with traditional advantages in our country, and has been a favorite drink of the working people in our country since ancient times. The content of mineral elements in tea mainly depends on the content in the soil. The content and composition of mineral elements in soil in different regions are different, especially the content of trace mineral element selenium is generally low. According to reports, 80% of my country's population lives in 70% of the selenium-deficient soil environment, but there are also a few high-selenium strata, such as Enshi, Hubei.

[0003] Modern medical research shows that selenium deficiency is closely related to more than 40 diseases in the human body (such as malignant tumors, cardiovascular diseases, hepatitis B and diabet...

Examples

Embodiment 1

[0030] Embodiment 1: "Selenium-enriched nutrient solution" is used in the Taiping tea-producing area of ​​Shixing in northern Guangdong, and the production method of spring tea is as follows:

[0031] Preparation of selenium-enriched nutrient solution: use selenium-containing inorganic salt as the preparation raw material, directly add pure water to sodium selenite to prepare a selenium-enriched concentrated nutrient solution with a selenium content (calculated as selenium) of 1000 mg / kg.

[0032] 1. Take 500ml, 1500ml, and 2500ml of 1000mg / kg selenium-enriched concentrated nutrient solution and add 50L of water to dilute respectively to obtain selenium-enriched spray solution with a concentration of 10mg / kg, 30mg / kg, and 50mg / kg (the preparation of other concentrations and dosages can be analogized by analogy) , see Table 1 for details).

[0033] 2. Spraying time: Spray the selenium-enriched spray liquid 7-10 days before the tea tree is picked for the first time. It is requir...

Embodiment 2

[0038] Example 2: "Selenium-enriched nutrient solution" is used in tea-producing regions in eastern Guangdong and Jiexi, and the production method of summer tea is as follows:

[0039]Preparation of selenium-enriched nutrient solution: use selenium-containing inorganic salt as the preparation raw material, add pure water directly to sodium selenate to prepare a selenium-enriched concentrated nutrient solution with a selenium content (calculated as selenium) of 5000 mg / kg.

[0040] 1. Take 100ml, 200ml, and 300ml of 5000mg / kg selenium-enriched concentrated nutrient solution and add 50L of water to dilute them into selenium-enriched spray solutions with concentrations of 10mg / kg, 20mg / kg, and 30mg / kg (other concentrations and dosages can be prepared in the same way, See Table 1 for details).

[0041] 2. Spraying time: Spray the selenium-enriched spray liquid 7-10 days before the tea tree is picked for the first time. It is required to spray on cloudy or sunny days. Spray evenly ...

Embodiment 3

[0046] Embodiment 3: "Selenium-enriched nutrient solution" is used in the tea-producing area of ​​Dungang, Shixing, northern Guangdong, and the production method of autumn tea is as follows:

[0047] Preparation of selenium-enriched nutrient solution: use selenium-containing inorganic salt as the preparation raw material, add pure water directly to sodium selenate to prepare a selenium-enriched concentrated nutrient solution with a selenium content (calculated as selenium) of 2000 mg / kg.

[0048] 1. Take 500ml, 750ml, and 1000ml of 2000mg / kg selenium-enriched concentrated nutrient solution and add 50L of water to prepare selenium-enriched spray solutions with concentrations of 20mg / kg, 30mg / kg, and 40mg / kg (other concentrations and dosages can be prepared in the same way, See Table 1 for details).

[0049] 2. Spraying time: Spray the selenium-enriched spray liquid 7-10 days before the tea tree is picked for the first time. It is required to spray on cloudy or sunny days. Spray...

technical field

[0001] The invention belongs to the technical field of tea production, in particular to a selenium-enriched green tea and a production method thereof. Background technique

[0002] Tea is an agricultural product with traditional advantages in our country, and has been a favorite drink of the working people in our country since ancient times. The content of mineral elements in tea mainly depends on the content in the soil. The content and composition of mineral elements in soil in different regions are different, especially the content of trace mineral element selenium is generally low. According to reports, 80% of my country's population lives in 70% of the selenium-deficient soil environment, but there are also a few high-selenium strata, such as Enshi, Hubei.

[0003] Modern medical research shows that selenium deficiency is closely related to more than 40 diseases in the human body (such as malignant tumors, cardiovascular diseases, hepatitis B and diabet...

Examples

Embodiment 1

[0030] Embodiment 1: "Selenium-enriched nutrient solution" is used in the Taiping tea-producing area of ​​Shixing in northern Guangdong, and the production method of spring tea is as follows:

[0031] Preparation of selenium-enriched nutrient solution: use selenium-containing inorganic salt as the preparation raw material, directly add pure water to sodium selenite to prepare a selenium-enriched concentrated nutrient solution with a selenium content (calculated as selenium) of 1000 mg / kg.

[0032] 1. Take 500ml, 1500ml, and 2500ml of 1000mg / kg selenium-enriched concentrated nutrient solution and add 50L of water to dilute respectively to obtain selenium-enriched spray solution with a concentration of 10mg / kg, 30mg / kg, and 50mg / kg (the preparation of other concentrations and dosages can be analogized by analogy) , see Table 1 for details).

[0033] 2. Spraying time: Spray the selenium-enriched spray liquid 7-10 days before the tea tree is picked for the first time. It is requir...

Embodiment 2

[0038] Example 2: "Selenium-enriched nutrient solution" is used in tea-producing regions in eastern Guangdong and Jiexi, and the production method of summer tea is as follows:

[0039]Preparation of selenium-enriched nutrient solution: use selenium-containing inorganic salt as the preparation raw material, add pure water directly to sodium selenate to prepare a selenium-enriched concentrated nutrient solution with a selenium content (calculated as selenium) of 5000 mg / kg.

[0040] 1. Take 100ml, 200ml, and 300ml of 5000mg / kg selenium-enriched concentrated nutrient solution and add 50L of water to dilute them into selenium-enriched spray solutions with concentrations of 10mg / kg, 20mg / kg, and 30mg / kg (other concentrations and dosages can be prepared in the same way, See Table 1 for details).

[0041] 2. Spraying time: Spray the selenium-enriched spray liquid 7-10 days before the tea tree is picked for the first time. It is required to spray on cloudy or sunny days. Spray evenly ...

Embodiment 3

[0046] Embodiment 3: "Selenium-enriched nutrient solution" is used in the tea-producing area of ​​Dungang, Shixing, northern Guangdong, and the production method of autumn tea is as follows:

[0047] Preparation of selenium-enriched nutrient solution: use selenium-containing inorganic salt as the preparation raw material, add pure water directly to sodium selenate to prepare a selenium-enriched concentrated nutrient solution with a selenium content (calculated as selenium) of 2000 mg / kg.

[0048] 1. Take 500ml, 750ml, and 1000ml of 2000mg / kg selenium-enriched concentrated nutrient solution and add 50L of water to prepare selenium-enriched spray solutions with concentrations of 20mg / kg, 30mg / kg, and 40mg / kg (other concentrations and dosages can be prepared in the same way, See Table 1 for details).

[0049] 2. Spraying time: Spray the selenium-enriched spray liquid 7-10 days before the tea tree is picked for the first time. It is required to spray on cloudy or sunny days. Spray...

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