Preparing process and usage of grease of housefly larva and fatty acid thereof

[0015] Using the fly maggots cultivated by the breeding method with the patent application number 200510060277.4 as raw materials, wash the fly maggots with water, dry them at a temperature of 40°C at a vacuum of 0.01Mpa until the water content in the fly maggots is 10%, crush them, and add 1 times its weight Petroleum ether, leached at 0°C for 5 hours, separated solid-liquid two phases, and the liquid phase was evaporated at 20°C under a vacuum of 0.01Mpa to recover petroleum ether to obtain fly maggot oil; In sodium pH6.0 buffer solution, add porcine pancreatic neutral lipase to reach 180 international units of enzyme activity per milliliter; in the buffer solution equipped with porcine pancreatic neutral lipase, add fly maggot oil, the difference between buffer solution and fly maggot oil The volume ratio was 1:0.5, kept at 38°C, stirred and reacted for 1.5 hours, stopped the reaction, separated statically, separated the oil phase, washed twice with an equal volume of water, an

[0017] Using the fly maggots cultivated by the breeding method with the patent application number 200510060277.4 as raw materials, wash the fly maggots with water, dry them at a vacuum degree of 0.003Mpa and a temperature of 30°C until the water content in the fly maggots is 13%, crush them, and add 10 times the weight of the fly maggots. Alkanes, leaching at 50°C for 1 hour, separating the solid and liquid phases, and evaporating the liquid phase at 30°C under a vacuum of 0.003Mpa to recover hexane to obtain fly maggot oil; In pH8.0 buffer solution, add yeast neutral lipase, reach per milliliter 200 enzyme activity international units; Add fly maggot oil in the buffer solution that is mixed with yeast neutral lipase, the volume ratio of buffer solution and fly maggot oil is 1:1.0, kept at 40°C, stirred and reacted for 3.5 hours, stopped the reaction, separated at rest, separated the oil phase, washed 5 times with an equal volume of water, and evaporated the oil phase to dryness a

[0019] Using the fly maggots cultivated by the breeding method with the patent application number 200510060277.4 as raw materials, wash the fly maggots with water, dry them at a temperature of 35°C at a vacuum of 0.008Mpa until the water content in the fly maggots is 15%, crush them, and add 7 times its weight of A mixed solvent of petroleum ether and hexane, the mixed solvent ratio of petroleum ether and hexane is 1:1, leaching at 20°C for 4 hours, separating the solid and liquid phases, and the liquid phase is evaporated at 40°C under a vacuum of 0.008Mpa to recover petroleum A mixed solvent of ether and hexane to obtain fly maggot oil; in the pH7.0 buffer solution of sodium monohydrogen phosphate and sodium dihydrogen phosphate prepared with water, add bacterial neutral lipase to reach 195 international units of enzyme activity per milliliter; Add fly maggot oil to the buffer solution equipped with bacterial neutral lipase, the volume ratio of buffer solution and fly maggot oil