CAS 57-87-4 98% Ergosterol Powder
What is ergosterol?
Ergosterol, with the chemical formula C₂₈H₄₄O (molecular weight 396.65), is a key sterol compound mainly found in fungal cell membranes. It is a white or colorless crystalline powder that plays a crucial role in maintaining the structural stability of fungal cell membranes, substance transport, and cell viability. Under ultraviolet radiation, it can be converted into vitamin D₂ and possesses various biological activities, including antioxidant, antibacterial, and immunomodulatory effects, making it an important natural ingredient in pharmaceuticals and functional foods.

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Ergosterol: Multiple Health Benefits
Boosts Immunity
Ergosterol helps regulate the immune system, enhancing the body's ability to fight pathogens while preventing overactive immune responses, thus playing a dual regulatory role.
Protects the Cardiovascular System
Studies have shown that it helps lower the level of bad cholesterol in the blood and reduce lipid deposits in blood vessels, playing a positive role in preventing arteriosclerosis and related cardiovascular diseases.
Antioxidant and Anti-aging
Ergosterol can eliminate harmful free radicals in the body, reduce oxidative stress damage to cells, and possesses anti-inflammatory properties, helping to slow down the cellular aging process.
Promotes Bone Health
Under ultraviolet radiation, ergosterol can be converted into vitamin D2, which promotes calcium absorption and is essential for maintaining bone strength and health.
Protects the Liver
Experiments have shown that ergosterol can reduce liver damage caused by toxic substances, helping to maintain normal liver function and demonstrating a good liver-protective effect.
Neuroprotective Potential
Preliminary studies have found that it may have a beneficial effect on cerebrovascular diseases such as stroke, helping to reduce nerve damage caused by cerebral ischemia.
Antifungal Drug Target
Because it is a component unique to fungi, it becomes an ideal target for antifungal drugs, which kill pathogenic fungi by disrupting its synthesis.
Ergosterol: Multiple Applications
Food and Nutrition:
In the food industry, ergosterol, as a safe fortifier, is used to fortify basic foods such as milk and cereals with vitamin D2, effectively improving the vitamin D nutritional status of the population. In addition, traditional food and medicinal materials containing ergosterol, such as Ganoderma lucidum and red yeast rice, have been developed into health foods with lipid-regulating and antioxidant functions.
Pharmaceutical and Health:
Ergosterol is a natural precursor to vitamin D2 synthesis. It can be efficiently converted into vitamin D2 after ultraviolet irradiation and is widely used in the prevention and treatment of vitamin D deficiency diseases such as rickets and osteoporosis. Simultaneously, as a key component unique to fungal cell membranes, it has become an important target for antifungal drug development. Clinically used antifungal drugs such as azoles and allylamines exert their effects by inhibiting the ergosterol synthesis pathway. Recent research has also found that its derivatives show potential medicinal value in immunomodulation, anti-inflammation, and anti-tumor effects.
In the agricultural production sector:
In animal husbandry, ergosterol, as a feed additive, can significantly improve animal growth performance and enhance immunity, and has a marked effect on improving the reproductive performance of sows and the health of piglets. In crop protection, fungicides developed based on the principle of ergosterol synthesis inhibition provide effective control measures against fungal diseases such as wheat powdery mildew and grape downy mildew.













