Retinol is a fat-soluble vitamin that exists in animal foods in the form of free aldehydes or esters and is abundant in fat, protein, milk, and liver.
Plants do not contain vitamin A, but the precursor of vitamin A (provitamin A) exists in vegetables such as carrots and tomatoes. After being absorbed by animals, it can be converted into vitamin A.
Retinol is necessary for maintaining the stability of human growth, development, reproduction, and cell membranes, and plays an important role in the visual process.
Retinal is consumed due to continuous metabolism in the body, and it needs to be replenished by oxidized vitamin A in time. Vitamin A is related to the normal structure and function of the upper and lower cells.
When it is lacking, it will lead to the conjunctiva, dry cornea, inflammation, and even blindness.
It will also cause damage to the respiratory epithelium, which is prone to respiratory infections, hair loss, and infant development. delay etc.
As a nutritional supplement, vitamin A oil is a fatty oil obtained from the liver and pylorus pylorus of aquatic animals or its concentrate. Crush the fresh fish liver and pylorus pendant, add 1-2% sodium hydroxide solution to pH 8-9. Retinol can be used in sausage, margarine, bread, dairy products, fruit juice powder, peanut butter, etc.