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- W3022045920 abstract "This chapter discusses the biological properties of lipids. Lipids are simple or complex esters or amides of long-chain carboxylic acids. They are characterized by insolubility in water, and solubility in the fat solvents—ether, light petroleum (petrol), chloroform, carbon tetrachloride, carbon disulfide, benzene, toluene, and hot acetone or alcohol. All lipid esters can be saponified, or hydrolyzed by alkalies into their constituent acids and alcohols. Lipids are mutually intersoluble and are universally distributed as mixtures, partly as structural lipid of cell membranes and cell contents and partly as storage lipid in adipose tissue, in liver, and in plant seeds rich in oil. The family is conveniently divided into simple lipids, including the true fats, phosphohpids, glycolipids, and lipoids or non-saponifiable lipids, which are included in a larger group. After successive extraction of the dried material with alcohol and ether, or other solvent, the combined extracts are saponified by boiling with aqueous alkali. This results in the separation of the unsaponifiable lipids. The aqueous mixture is acidified with hydrochloric acid. This results in the separation of the water-insoluble lipid acids, which can be extracted by ether. The water-soluble lipid derivatives remain in the aqueous phase and are separated individually." @default.
- W3022045920 created "2020-05-13" @default.
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- W3022045920 date "1961-01-01" @default.
- W3022045920 modified "2023-09-25" @default.
- W3022045920 title "Lipids" @default.
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- W3022045920 doi "https://doi.org/10.1016/b978-1-4831-6808-1.50013-4" @default.
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