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For plant stanol esters: (i) Foods containing at least 1.7 g per serving of plant stanol esters, eaten twice a day with meals for a total daily intake of at least 3.4 g, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease. A serving of [name of the food] supplies ___grams of plant stanol esters. [17]
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 β-sitosterol into their cell membranes instead of cholesterol, though cholesterol is also present in said membranes.
Sterol esters are a heterogeneous group of chemical compounds.They are created when the hydroxyl group of a sterol and a fatty acid undergo an esterification reaction. They can be found in trace amounts in every cell type but are highly enriched in foam cells and are common components of human skin oil.
Stanol esters are a saturated subgroup of sterol esters. Plant stanol esters in Benecol products are fatty acid esters of plant sterols. The sterol part of the molecule is sitostanol or campestanol while the fatty acid residue originates from different vegetable oils. Plant stanol esters have the following physical properties:
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]
The European Commission approved the following statement regarding Benecol products: "Plant stanol esters have been shown to lower/reduce blood cholesterol.Blood cholesterol lowering may reduce the risk of coronary heart disease" but noted that "there are no studies demonstrating that plant stanol esters have an impact on population-based CHD morbidity and mortality rates".
However, dietary therapy is often insufficient to control this disease since plant sterols are constituents of all plant-based foods. Statins have been used, and while these lower cholesterol levels and may ameliorate atherosclerotic disease, plant sterol levels are insufficiently lowered by their use alone. [citation needed]
Brassicasterol (24-methyl cholest-5,22-dien-3β-ol) is a 28-carbon sterol synthesised by several unicellular algae (phytoplankton) and some terrestrial plants, like rape.This compound has frequently been used as a biomarker for the presence of (marine) algal matter in the environment, and is one of the ingredients in stigmasterol-rich plant sterols (Number E499 in the European numbering system).
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