β-sitosterol

Phytosterols (also called plant sterols) are a group of steroid alcohol, phytochemicals naturally occuring in plants. They are white powders with mild, characteristic odor, insoluble in water and soluble in alcohols. They have many applications as food additives, and in medicine and cosmetics. Sterols are a subgroup of steroids with a hydroxyl group in the 3-position of the A-ring. ... Phytochemicals are sometimes referred to as phytonutrients; these terms are often used interchangeably. ... Jump to: navigation, search It has been suggested that Colorings be merged into this article or section. ...

Plants contain a range of phytosterols. They act as a structural component in the cell membrane, a role which in mammalian cells is played by cholesterol. Jump to: navigation, search Drawing of a cell membrane A component of every biological cell, the selectively permeable cell membrane (or plasma membrane or plasmalemma) is a thin and structured bilayer of phospholipid and protein molecules that envelopes the cell. ... Jump to: navigation, search Orders Subclass Multituberculata (extinct) Plagiaulacida Cimolodonta Subclass Palaeoryctoides (extinct) Subclass Triconodonta (extinct) Subclass Placentalia Afrosoricida Artiodactyla Carnivora Cetacea Chiroptera Creodonta (extinct) Dermoptera Desmostylia (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Litopterna (extinct) Macroscelidea Notoungulata (extinct) Perissodactyla Pholidota Primates Proboscidea Rodentia Scandentia Sirenia Tubulidentata Xenarthra Subclass Marsupialia Dasyuromorphia... Cholesterol is a steroid, a lipid, and an alcohol, found in the cell membranes of all body tissues, and transported in the blood plasma of all animals. ...

The molecule shown on the right is β-sitosterol. By removing carbon 24², campesterol is obtained. By removing carbons 24¹ and 24², cholesterol is obtained. Removing a hydrogen from carbons 22 and 23 yields stigmasterol (stigmasta-5,22-dien-3β-ol). Removing carbon 24² and hydrogens from carbons 22 and 23 yields brassicasterol (ergosta-5,22-dien-3β-ol). Further removal of hydrogens from carbons 7 and 8 from brassicasterol yields ergosterol (ergosta-5,7,22-trien-3β-ol). (Refer to the numbering of steroid skeleton.) Cholesterol is a steroid, a lipid, and an alcohol, found in the cell membranes of all body tissues, and transported in the blood plasma of all animals. ... A steroid is a lipid characterized by a carbon skeleton with four fused rings. ...

Ergosterol plays a role of a structural sterol in the cell walls of fungi. As fungi are eucaryotes, this is one of their few significant differences against animal cells, so antifungals often target ergosterol and its synthesis. Ergosterol, a sterol, is the biological precursor to Vitamin D2. ... Jump to: navigation, search A cell wall is a more or less solid layer surrounding a cell. ... Jump to: navigation, search Divisions Chytridiomycota Zygomycota Glomeromycota Ascomycota Basidiomycota Yellow fungus Fungus growing on a tree in Borneo For the fictional character, see Fungus the Bogeyman. ... Kingdoms Eukaryotes are organisms with complex cells, in which the genetic material is organized into membrane-bound nuclei. ... Something antifungal kills or inhibits the growth of fungus. ...

Presence of brassicasterol, together with auxiliary markers α-linolenic acid and erucic acid, is a marker of adulteration of soybean oil and sunflower oil with rapeseed oil. As there is no brassicasterol in sunflower and soybean oil, but its concentration in rapeseed oil is about 1400 mg/kg, the amount of rapeseed oil added can be calculated. [1] Linolenic acid is an 18-carbon polyunsaturated fatty acid with three double bonds. ... Erucic acid Erucic acid is a fatty acid found in rapeseed, wallflower seed, and mustard seed, making up 40 to 50 percent of their oil. ... Adulterants are chemical impurities or substances that by law do not belong in a food or pesticide. ... Binomial name Glycine max Merr. ... Jump to: navigation, search Binomial name Helianthus annuus L. The sunflower (Helianthus annuus) is an annual plant in the Family Asteraceae with a large flower head (inflorescence). ...

As a food additive, phytosterols have cholesterol-lowering properties (reducing cholesterol absorption in intestines), and may act in cancer prevention. Phytosterols naturally occur in small amount in vegetable oils, especially soybean oil. One such phytosterol complex, isolated from vegetable oil, is cholestatin, composed of campesterol, stigmasterol, and brassicasterol, and is marketed as a dietary supplement. Binomial name Glycine max Merr. ... // United States In the United States, a dietary supplement is defined under the Dietary Supplement Health and Education Act of 1994 as a product that meets each of the following criteria: It is intended to supplement the diet and bears or contains one or more of the following dietary ingredients...