How is bezoar formed?

The ox emperor was naturally born in a sick cow. It is a particle or block formed by bile duct inflammation or bile exclusion disorder in sick cattle, which causes cholesterol, calcium salt and bile pigment in bile to precipitate and coagulate.

Most of these stones are oval, spherical, triangular or square in size. Large ones are like eggs, small ones are like beans, generally 0.6 ~ 4.5 cm in diameter, and a few are tubular or fragmented. Some bovine bile contains many particles, while others only contain 1 particle.

Extended data:

One. chemical composition

Contains cholic acid 5% ~ 1 1%, deoxycholic acid about 2%, chenodeoxycholic acid 0.6% ~ 1.7% and its salts, bilirubin and its calcium salts; It also contains cholesterol, ergosterol, lecithin, fatty acids, vitamin D, water-soluble peptide SMC (which can contract smooth muscle and lower blood pressure) and copper, iron, magnesium and zinc.

Calculus bovis produced in Australia contains carotenoids, alanine, glycine, taurine, aspartic acid, arginine, leucine, methionine and other amino acids.

Second, identify

Character identification shows that this product is mostly oval, spherical and triangular, with a diameter of 0.6-3(-4.5) cm. The surface is golden yellow to brownish yellow, with different shades, delicate and slightly bright. Some of them are covered with a black and shiny film, which is usually called "black gold coat", while others are rough and cracked.

It is light, brittle, easy to delaminate and peel off, light in cross section, with dense concentric ring patterns, and some with white hearts. The smell is fragrant, bitter first and then sweet, with obvious fragrance and cool feeling. It is fragile when chewing and does not stick to teeth.

Bile duct stones are tubular, with uneven surface or transverse curved lines, or broken small pieces, about 3 cm long and 0.5- 1.5 cm in diameter. The surface is reddish brown or yellowish brown, some are brown, with cracks and small protrusions. There are few layers in the section, and some of them are hollow.

Microscopic identification shows that this product is packed with hydrous chloroethanol. Without heating, irregular blocks can be seen, which are made up of most small brown or brownish red particles. When it meets water, the pigment in the chlorinated aldehyde solution quickly dissolves and turns bright golden yellow, and turns green after being left for a long time.

Baidu encyclopedia-Niuhuang