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Fenggang Zinc and Selenium Rich Tea
Basic Introduction to Fenggang Zinc and Selenium Rich TeaFenggang Zinc and Selenium Rich Tea is produced in Fenggang County, Zunyi City, Guizhou Province. The tea production history of Fenggang dates back a long way and is mentioned by the tea sage Lu Yu in his book "The Classic of Tea." Fenggang Zinc and Selenium Rich Tea is characterized by its green and lustrous color, bright green infusion, rich flavor, and tender, vibrant green leaves at the bottom. In January 2006, the General Administration of Quality Supervision, Inspection and Quarantine (GAQSIQ) approved the implementation of geographical indication product protection for Fenggang Zinc and Selenium Rich Tea. Product CharacteristicsThe Fenggang Zinc and Selenium Rich Tea has tightly twisted Maojian tea with a fine, flat, and smooth appearance, a green and lustrous color, a high aroma, a bright green infusion, a rich flavor, and tender, vibrant green leaves at the bottom. The tea is rich in 17 amino acids required by the human body and multiple trace elements such as zinc and selenium, with zinc content ranging from 40mg/kg to 100mg/kg, and selenium content from 0.25mg/kg to 3.5mg/kg. Historical FolkloreThe tea production history of Fenggang is extensive. In his world's first book on… -
Is the foam on tea related to the quality of the tea?
When brewing tea, a layer of foam may appear on the surface of the tea liquor, known as tea foam. Opinions about this foam have been divided throughout history. Tea sage Lu Yu believed that this layer of foam contained the essence of the tea, but not everyone appreciates this layer of foam. There is even a saying that "foam indicates high levels of pesticide residues." So what causes the foam? Is there any relationship between the foam in the tea and the quality of the tea? Image What is tea foam? The formation of foam in tea liquor is mainly due to the presence of a substance called tea saponin. Tea saponin, also known as tea sapogenin, is a fine columnar crystal found in the roots, stems, leaves, and seeds of tea plants. Its aqueous solution can produce persistent, soap-like foam when shaken. Tea saponins are a class of structurally complex glycoside compounds with a bitter and pungent taste. They have strong foaming properties and are not affected by the hardness of the water, so teas with abundant foam tend to have a relatively rich flavor. In the Wei-Jin era, Du Yu wrote in a poem: "The foam forms…
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