z脂类大宗天然产物的化工利用（Z chemical utilization of bulk natural products of lipids）.docVIP

z脂类大宗天然产物的化工利用（Z chemical utilization of bulk natural products of lipids） Lipids are a very common type of organic substance in our daily life, such as the kinds of food we cook. Lipids are classified into three major groups, simple lipids, complex lipids, and derived lipids. Fatty acid, a compound formed by dehydration and condensation of fatty acids, such as glycerides and waxes (beeswax). Composite fat: fat molecules of phospholipids, biological molecules formed substances, such as phospholipids (lecithin, cephalin, tired, phosphatidylinositol) sphingolipids, glycolipids, lipoprotein. The precursor and derivatives of lipids, such as sterols, isoprene, and terpenes. Life can be said that fat is inseparable from the necessities of our lives, we cook, leaving the oil will not do, fat can also provide energy for our metabolism, it can be said that fat in our lives in a very high position. In chemical production and chemical utilization, the status of grease is also very important, there are many places in the chemical industry is inseparable from the fat. Here we come to say specifically, why cant we get fat in chemical industry?. An important source of lipids; generally speaking, human consumption and industrial lipids are mainly derived from plants and animals, as well as biotransformation, chemical synthesis and semi synthesis. The main methods of extraction of lipids: (a) direct extraction method, 1, pretreatment and extraction for biological tissue in the presence of favorable lipid can be broken by the corresponding organization, solvent extraction, to obtain crude product; on the river bound lipids, before extraction pretreatment hydrolysis or other way then, leaching, extraction or hydrolysis. 2. Separation: there are many kinds and different properties, and the separation methods usually use the method of dissolution and adsorption. (1) the dissolution method uses the difference in the solubility of lipids in different solvents, such as lecithin dissolved in