Extraction of crude oil in oil crops.

summary of the . Understand the principles and methods of grease extraction. Master the operation method of the Soc extractor.
the principles of . Grease is an important part of animal and plant cells, and its content is an important sign of oil crop quality. Grease is a mixture of high fatty acid glycerides, a wide variety of which can be dissolved in ether, benzene, petroleum ether, gasoline and other fat-soluble
organic
solvents. Lipids are insoluble in water and soluble in organic solvents. Most of the lipids were determined by the extraction method of organic solvents with low boiling point. Among them, ether dissolves fat with strong ability and is used most. Ether has a certain polarity, but not as strong as ethanol, methanol, water and other polarity, but its boiling point is low (34.6 degrees C), flammable, and can contain about 2% of the water, water ether will be pumped out of sugar and other non-fat components at the same time, so when used, must use waterless ether as an extractor, and require samples without moisture. The ability of petroleum ether to dissolve fat is weaker than ether, but absorbs less water than ether, no ether is flammable, allowing the sample to contain trace amounts of water when used. According to the characteristics of the two solvents and the conditions of the laboratory, this experiment used petroleum ether as the extraction solvent to extract grease in the Soc extractor. In the extraction process, some oil pigments, free fatty acids, phospholipids, solid alcohol wax, etc. are also pumped. Therefore
the extract
is crude grease.
fatty acids that make up fats, in addition to saturated fatty acids such as stearic acids and soft lipids, there are unsaturated fatty acids such as ouric acids and floric acids. Unsaturated fatty acids can be qualitatively or quantitatively determined on the basis of a addition to bromine or iodine.extraction device is .