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β-sitosterol, a prototypical phytosterol. Phytosterols are phytosteroids, similar to cholesterol, that serve as structural components of biological membranes of plants. [1] They encompass plant sterols and stanols. [1] More than 250 sterols and related compounds have been identified. [2] Free phytosterols extracted from oils are insoluble in ...
Plant sterols were first shown in the 1950s to lower LDLs and cholesterol. [7] Since then, numerous studies have reported the lipid-lowering effects of dietary phytosterols, including campesterol. [8] In basic research, campesterol competes with cholesterol, thus reducing the absorption of cholesterol in the human intestine. [9]
β-sitosterol is widely distributed in the plant kingdom.It is found in vegetable oil, nuts, avocados, and derived prepared foods such as salad dressings. [2] Olavius algarvensis, a species of marine annelid, predominantly incorporate sitosterol into their cell membranes instead of cholesterol, though cholesterol is also present in said membranes.
More specifically, research supports the heart-healthy effects of soy, nuts, plant sterols, and fiber, says Keri Gans, M.S., R.D., registered dietitian and author of The Small Change Diet ...
Stanol ester. Stanol esters is a heterogeneous group of chemical compounds known to reduce the level of low-density lipoprotein (LDL) cholesterol in blood when ingested, [1] though to a much lesser degree than prescription drugs such as statins. [2] The starting material is phytosterols from plants.
Sitosterolemia is a rare autosomal recessively inherited lipid metabolic disorder. It is characterized by hyperabsorption and decreased biliary excretion of dietary sterols (including the phytosterol beta-sitosterol). Healthy persons absorb only about 5% of dietary plant sterols, but sitosterolemia patients absorb 15% to 60% of ingested ...