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脂类包括脂肪和类脂,它是一类不溶于水而溶于乙醚、氯仿等有机溶剂的物质。脂肪又称真脂、中性脂肪,其化学名称为甘油三酯,是由一分子甘油和三分子的脂肪酸结合而成。如脂肪中所含的脂肪酸以不饱和的脂肪较多,即在脂肪酸的烃链中双键较多,在室温中呈液体状态,如各种植物油。反之,含不饱和脂肪酸较少,而含饱和脂肪酸较多,在室温中呈固体状态,如各种动物脂肪。类脂,是指一类在某些物理化学性质上与脂肪相
Lipids include lipids and lipids, which are insoluble in water and soluble in ether, chloroform and other organic solvents. Fat, also known as real fat, neutral fat, its chemical name is triglyceride, is a molecule of glycerol and three molecules of fatty acids combined. For example, the fatty acids contained in the fat contain more unsaturated fat, that is, more double bonds in the fatty acid hydrocarbon chain and are liquid at room temperature, such as various vegetable oils. Conversely, less unsaturated fatty acids, saturated fatty acids and more, at room temperature in a solid state, such as a variety of animal fat. Lipids, refers to a class of certain physicochemical properties with the fatty phase