Cholesterol powder is a derivative of cyclopentane and phenanthrene. The chemical formula is c27h46o. It is a white or light yellow crystal, slightly soluble in water, soluble in ethanol (1:100), absolute ethanol (1:50), ether, acetone, dioxane and petroleum ether. They are the leading steroids in mammals and play an essential role in basic cell life activities. It exists in flue-cured tobacco, burley tobacco and flue gas. It exists in the blood and is an oil-soluble substance that cannot be saponified in the human body. It can also be deposited in the gallbladder and become the main component of gallstones.
Generally, lipid substances are mainly divided into two categories. Fat (primarily triglycerides) is the most abundant lipid in the human body and a primary energy source in the body; The other is called lipid, which is the essential component of biofilm, accounting for about 5% of body weight.
it exists in lipoproteins in the blood. Its existing forms include high-density lipoprotein cholesterol, low-density lipoprotein cholesterol and very-low-density lipoprotein cholesterol. The vast majority of it in the blood is esters bound to fatty acids, and less than 10% of it exists in a free state. HDL helps clear cholesterol in cells, while excessive LDL is generally considered a precursor of cardiovascular disease. The cholesterol content in the blood is between 140 and 199 mg per unit, which is a relatively normal cholesterol level.
Cholesterol powder is composed of a steroid part and alongside chain. The total cholesterol in the human body accounts for about 0.2% of body weight. For every 100g of tissue, the bone contains about 10mg, the skeletal muscle contains about 100mg, the internal organs are primarily between 150 ~ 250mg, and the content of liver and skin is slightly higher, about 300mg. The content in brain and nerve tissue is the highest, about 2 grams per 100 grams of tissue, accounting for about 1 / 4 of the total amount of the whole body.
The basic process of cholesterol synthesis:
The synthesis process is complex. There are nearly 30 enzymatic reactions, which can be roughly divided into three stages: acetyl (C2) → , isoprene (C5) → , squalene (C30) → , cholesterol (C27)
It can be dehydrogenated chemically to produce 7-dehydrocholesterol, which is used to produce vitamin D3. In addition, it is also the primary raw material for preparing artificial bezoar and synthetic hormones. ithas liquid crystal properties, the solution has fluidity, and its molecules can be arranged very regularly under certain conditions. esters made of it and different fatty acids are liquid crystal materials with significant temperature effects. Therefore, the comprehensive utilization of the pig brain to produce cholesterol powder is of great value.