Extraction method of flaxseed oil
A technology of linseed oil and extraction method, which is applied in the direction of fat oil/fat production and fat generation, can solve the problems of high equipment investment and operating conditions, unsuitable for industrial application, and long time consumption, and achieve high added value Processing, beneficial to comprehensive utilization, simple and fast operation
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Embodiment 1
[0031] Flaxseeds for oil extraction, after impurity removal, drying, and crushing, pass through a 60-mesh sieve (the temperature of the flaxseeds should be kept ≤ 60°C during the process), put them into the extraction tank, and after vacuuming to below 0.01MPa, add raw materials weighing 4 times the mixed solvent (the volume ratio of alkaline ethanol and subcritical propane is 3:20, and the alkaline ethanol is a solution dissolved with 10% by mass of sodium hydroxide). The operating temperature is 50°C (the operating pressure is the corresponding vapor pressure, 0.3 ~0.8Mpa), after 30 minutes each time, a total of 5 times of extraction, the oil and solvent mixture was obtained; the oil and solvent mixture was gasified under reduced pressure, and the gauge pressure reached 0MPa and then vacuumed for precipitation, when the gauge pressure was -0.09MPa , The temperature is 40~50 ℃, and the desolvation linseed oil can be obtained after maintaining for 30 minutes. The extraction rat...
Embodiment 2
[0034] Flaxseeds for oil extraction, after impurity removal, drying and crushing, pass through a 60-mesh sieve (the temperature of the flaxseeds should be kept ≤ 60°C during the process), put them into the extraction tank, and after vacuuming to below 0.01MPa, add raw materials weighing 3 times the mixed solvent (the volume ratio of alkaline ethanol and subcritical propane is 5:20, and the alkaline ethanol is a solution dissolved with 5% by mass of sodium hydroxide). The operating temperature is 60°C (the operating pressure is the corresponding vapor pressure, 0.3 ~0.8Mpa), after 60 minutes each time, a total of 3 extractions, the mixture of oil and solvent was obtained; the mixture of oil and solvent was gasified under reduced pressure, and the gauge pressure reached 0MPa, and then vacuumized for precipitation, when the gauge pressure was -0.09MPa , The temperature is 40~50℃, and the desolvation linseed oil can be obtained after maintaining for 30 minutes. The extraction rate ...
Embodiment 3
[0037]Flaxseeds for oil extraction, after removing impurities, drying, and crushing, pass through a 60-mesh sieve (the temperature of the flaxseeds should be kept ≤ 60°C during the process), put them into the extraction tank, and after vacuuming to below 0.01MPa, add raw materials weighing 6 times the mixed solvent (the volume ratio of alkaline ethanol and subcritical propane is 1~20, and alkaline ethanol is a solution dissolved with 8% by mass of sodium hydroxide). The operating temperature is 40°C (the operating pressure is the corresponding vapor pressure, 0.3 ~0.8Mpa), after 40 minutes each time, a total of 4 extractions, the mixture of oil and solvent was obtained; the mixture of oil and solvent was gasified under reduced pressure, and the gauge pressure reached 0MPa, and then vacuumized for precipitation, when the gauge pressure was -0.09MPa , The temperature is 40~50°C, keep for 30 minutes to obtain presolvated linseed oil, which contains residual solvent ≤ 30mg / kg, impu...
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