Variety of tea: Biyun
It belongs to asexual reproduction system. It is a national improved breed. It is selected by Tea Research Institute of Chinese Academy of Agricultural Sciences. There are 12 provinces introduced. Morphological features: small tree type, middle leaf, middle bud species. The tree is erect and the branches are high. Spring buds germinate from late March to early April. In the middle of April, one bud and three leaves are in full bloom, and 100 buds weigh 51.7 grams. The bud leaves are green and hairy. The production of famous green tea is characterized by tight strings, emerald green color, high aroma and mellow taste. The quality characteristics of spring tea with one bud and two leaves: tea polyphenols 17.1%, amino acids 3.4%, caffeine 3.7%, total catechins 160.37 mg / g.
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Tea dregs can treat wastewater.
Tea residue deodorization, as fertilizer, but also can be used to treat wastewater! Weng Zhihuang, a professor at Yishou University in Taiwan, found that tea residue can effectively absorb heavy metals such as hexavalent chromium in sewage and is a cheap and effective biosorbent. In the experiment, Weng Zhihuang found that the waste water can be treated by repeatedly steaming tea with pressure cooker and deionized water, removing organic acids from tea, and then drying and grinding powder. The maximum adsorption capacity of black tea powder is as high as 117 mg / g, which is more effective than traditional chemical treatment agents.
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Pu'er tea
The concept of Pu'er tea Pu'er tea is a unique historical tea in Yunnan. It is a product made from Yunnan big-leaf green tea as raw material after natural long-term fermentation or artificial rapid fermentation. That is, we are now commonly known in the market as Shengpu and ripe Pu, and there are two types of scattered tea and pressed tea in the system; after the finished product, they all continue to carry out the natural aging process, with the unique quality of getting better and better. 1.1 Classification of Pu'er Tea 1.1.1 Raw tea is classified according to the method of preparation: after picking and processing, it is natural.
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