Processing Technology of Sichuan Border Tea
The production of border tea in Sichuan has a long history. The "Tea-Horse Law" was carried out by the officials of all dynasties since the Song Dynasty, and the "Tea-Horse Division" was set up in Ya'an, Tianquan and other places in Sichuan Province in the Ming Dynasty (AD 1371-1541).
South roadside tea is made by cutting the branches and leaves of tea trees. The raw materials of fresh leaves of South roadside tea are thicker and old, which can be picked by hand or cut by knife, and the old leaves or current year branches and leaves can be picked by hand; the knife cuts the mature new branches and leaves of the current season or year. South roadside tea can be divided into Maozhuang tea and Zhuangzhuang tea due to different processing methods. The fresh branches and leaves cut off and dried directly without steaming and kneading are called "Maozhuang tea". After picking the cut branches and leaves, after killing the green, they have to go through gathering, drying tea, steaming tea,
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Determination of aminophylline tablets
Take 20 tablets of anhydrous theophylline ┄, weigh them precisely, grind them fine, take an appropriate amount (about equivalent to aminophylline lOOmg), put them in a 200ml measuring bottle, add 0.1mol/L sodium hydroxide solution 20ml and water 60ml, shake for 10 minutes to dissolve aminophylline, dilute it with water to scale, shake well. Filter, refine the filtrate 5ml, place it in a 250ml flask, dilute it to scale with 0.01mol/L sodium hydroxide solution, shake well, and use spectrophotometry (page 17, appendix).
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Processing and application of tea seed shell
Camellia oleifera is a unique woody oil in China. According to statistics, Camellia oleifera has an area of more than 3.47 million hectares and an annual output of 56.6 billion kg. In the tea seed shell, it contains 52.15% lignin, 30.27% pentose, 5.43% diosgenin, 2.47% tannin, 0.43% water, 0.13% oil and 9.12% other ingredients. Due to the high content of lignin and pentoses in tea seed shell, the research on the utilization of tea seed shell is still focused on the preparation of furfural, activated carbon and xylitol. 1. Tea seed
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