Method of preparing low impurity content, clear and transparent food grade lecithin and product
A kind of lecithin, low impurity technology, applied in the field of separation and purification of food additives
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Embodiment 1
[0054] Take 3kg of feed grade soybean lecithin, add 12 liters of industrial hexane according to the weight to volume ratio, filter with a 0.2 μm membrane at 50°C and a filtration pressure of 0.15Mpa, and concentrate to 1.2 liters. An additional 3.6 liters of solvent was added to the concentrate, and the concentration was continued to 2 liters. The two filtrates were combined, and the solvent was evaporated to obtain the product of the present invention.
Embodiment 2
[0056] Get 3kg of feed grade soybean lecithin, add 9 liters of industrial hexane to dissolve, and make a solution. Filtrate with a 0.1 μm membrane at 50° C. and a filtration pressure of 0.15 MPa, and concentrate to 1 liter. The obtained filtrate is subjected to rotary evaporation to obtain filtered lecithin.
Embodiment 3
[0058] Get 3kg of feed grade soybean lecithin, add 21 liters of industrial hexane to dissolve, and make a solution. Filtrate with a 0.6 μm membrane at 50° C. and a filtration pressure of 0.15 MPa, and concentrate to 3 liters. The obtained filtrate is subjected to rotary evaporation to obtain filtered lecithin.
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