Glucose

Tea plant frost damage refers to the freezing injury that occurs when tea plants are exposed to temperatures below 0°C during the winter dormancy period. The parts of the tea plant most susceptible to frost damage are often the current year's shoots, flower buds, young fruits, and root necks. When a young shoot is slightly damaged by frost, only the pith of the branch may change color. With moderate frost damage, the xylem changes color, and severe frost damage can result in damage to the phloem. When the cambium layer changes color, the branch loses its ability to recover. Damage to the root neck can lead to weakened or complete death of the tea plant. 1. How is tea plant frost damage classified? What are the main symptoms? Frost damage can be categorized based on the cause into snow frost, wind frost, and frost. (1) Snow Frost. Snow damage is a common form of frost damage to tea plants, particularly in high-latitude and high-altitude tea gardens. Tea plants suffering from snow damage show branches broken under the weight of accumulated snow, as well as freezing injury due to alternating freeze-thaw cycles during melting periods, causing uneven temperature changes. In severe…

In recent years, Anhua dark tea and its active components have been proven to be effective in improving hyperuricemia by inhibiting key enzymes involved in uric acid regulation in the body and modulating the expression of uric acid transport proteins. This article systematically discusses the uric acid lowering effect and mechanism of Anhua dark tea, aiming to provide a theoretical basis for scientifically regulating uric acid levels through tea consumption and to offer research ideas for the development of functional tea products that lower uric acid. 1. What is Hyperuricemia? Hyperuricemia (HUA) is a condition where an excessive amount of uric acid is produced or too little is excreted by the kidneys, leading to a supersaturated state of urate in the extracellular fluid and causing elevated uric acid levels in the blood. It is closely related to cardiovascular diseases and organ damage. Hyperuricemia can be diagnosed when fasting serum uric acid levels are above 420 μmol/L on two separate occasions. It is reported that there are approximately 177 million people with hyperuricemia in China, primarily affecting middle-aged and elderly men and postmenopausal women, with a trend toward younger individuals in recent years. 1.1 Hyperuricemia and Its Causes Hyperuricemia can be…