Trans fatty acids are a kind of unsaturated fatty acids which are harmful to health

Fat acid metabolism is an important and complex biochemical reaction in the body

Water soluble vitamins is a group of vitamins that dissolve in water

Bile acid analysis is of great importance to the research and development of clinical chemistry and bile acid drugs. As early as the ancient Chinese contain animal bile acids. Studies on bile acids in western countries began in the early 19th century, and quantitative studies began in 1970.

Fat soluble vitamins are insoluble in water but soluble in fats and some organic solvents, including vitamin A, vitamin D, vitamin E and vitamin K. Fat soluble vitamins can be stored in large amounts in the body, mainly in the liver, so excessive intake will cause poisoning. Fat-soluble vitamins are becoming increasingly popular in clinical field. Thus, It is necessary to give reasonable attention to the analysis of the content and function of fat-soluble vitamins so that ensure the safety of use, maintain physical health.

Fatty acid is a kind of carboxylic acid compound also called free fatty acid when it exists alone. Three long chain fatty acids and glycerol form three acid as the main components of the fat. The lower fatty acids are colorless liquids with pungent odors, while the higher fatty acids are waxy solids with no obvious smell. Fatty acids are the simplest of fats and the constituents of many more complex fats. With sufficient oxygen supply, fatty acids can be oxidized and decomposed into carbon dioxide and water, releasing a lot of energy. Therefore, fatty acids are one of the main energy sources of the body. Fatty acids can be used as emulsifiers , lubricants and gloss agents . Can also be used in the production of advanced soap, transparent soap,

host cell proteins is a type of protein mixture that is produced by genetic engineering strain or cell line with nothing to do with the purpose of genetic engineering, some of these proteins is necessary in the production process, engineering strains or cell lines survival, reproduction, and other normal physiological activities, with the objective product purification and cannot be removed, meanwhile, the composition and abundance of the host cell proteins at all stages of production and the final product are quite different, it is up to many different factors.