Production method of tea rich in selenium

Abstract

The invention relates to a process for growing selenium-rich tea characterized in that, spraying sodium selenate aqueous solution onto tree plant foliage before collection, then collecting the spring tea within 7-12 days after spraying, and finishing collection of the summer and autumn tea within 10-20 days after spraying, and finally preparing the final tea using the conventional tea-making process.

Description

technical field [0001] The invention relates to a method for increasing the content of trace elements in crop products, in particular to a method for controlling the residual inorganic selenium on the surface of tea leaves and increasing the content of organic selenium in the tea leaves. technical background [0002] Selenium is one of the essential trace elements for the human body. Selenium deficiency in the human body can cause various diseases. There are 22 provinces, municipalities, and autonomous regions in my country that lack selenium in the soil, which has caused serious endemic diseases in many areas of our country. In recent years, it has been found that tea has the function of enriching selenium. At present, selenium-enriched tea is mainly produced in selenium-enriched areas. Due to the rich content of inorganic selenium in the soil, tea trees absorb the inorganic selenium in the soil and convert it into organic selenium, which increases the content of organic s...

AI Technical Summary

Problems solved by technology

However, there are very few selenium-rich areas that can produce tea, and most of the tea areas are selenium-deficient areas, so the production of selenium-enriched tea is limited, which is far from meeting market demand

Selenium-enriched tea is produced by applying selenium-containing fertilizers to the soil. The selenium content in the tea leaves produced by this method cannot reach the specified index value, and this method will increase production costs and easily cause environmental pollution, so it is not used by people.

[0003] Announced on May 4th, 1994, the announcement number is CN1024388C Chinese patent discloses a kind of artificial cultivation method of selenium-enriched tea, is to spray 150-750ppm sodium selenite aqueous solution in tea bud growth and development period, this method is due to its spraying The concentration of the sodium selenite aqueous solution applied is high, causing the residual amount of inorganic selenium on the surface of tea leaves to be large, and inorganic selenium belongs to toxic substances, which will be poisoned after being absorbed by the human body. Therefore, the artificial cultivation method of this selenium-enriched tea cannot be accepted by people and is difficult promotional use