Silymarin80%

Milk thistle extract is a natural plant extract made from the dried, mature seeds of the herbaceous plant *Silybum marianum* (family Asteraceae), after removing the pappus. The core raw material is the seed, which undergoes standardized industrial extraction, purification, and drying. The achenes used are slightly flattened and elongated oval, with a regular black and white striped pattern on the surface. The raw material is of stable quality with extremely low impurity content. This extract does not have a single fixed chemical formula; its core effective complex is a flavonoid lignan-silymarin, which is also a key indicator for product grading in the industry. It mainly contains various characteristic monomeric components such as silymarin A, silymarin B, isosilymarin, silymarinine, and silymarinine, while naturally retaining small amounts of plant fatty acids, polyphenols, phytosterols, sugars, and trace amounts of fumaric acid and other associated excipients. The most widely circulated industrial standard in the market is a standardized product with a total silymarin content of 80%. This standard is refined through defatting and precise chromatographic purification processes, resulting in a balanced component ratio and extremely low impurity content. In terms of appearance and physicochemical properties, the 80% purity milk thistle extract is a uniform and fine brownish-yellow powder. The powder is loose and free of lumps, with a uniform color, no irritating odor, a slightly bitter taste, and slight natural hygroscopicity. It has stable physicochemical solubility properties, is extremely difficult to dissolve in pure water and chloroform at room temperature, is slightly soluble in low-concentration methanol and ethanol solutions, and is completely soluble in acetone, ethyl acetate, and alkaline aqueous solutions.