Abstract
A fractional crystallization method for the winterization of cottonseed oil with solvents was developed in our laboratories and pilot plant.
Small amounts of solvent (e.g., 10% by weight of acetone) were mixed with the oil. This mixture was rapidly chilled to 0°C. and kept at this temperature for 3–4 hrs.; the liquid portion was separated from the solids.
After solvent evaporation a salad oil of good quality was obtained. The yield is equal to or better than that obtained with conventional methods.
The method is suitable for a continuous operation since rapid chilling can be used, and only a short over-all time is necessary. Great advantages of the process are the use of low amounts of solvent and of a refrigeration system not requiring temperatures below 0°C.
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Mertens, W.G., Rubin, L.J. & Teasdale, B.F. The production of salad oil by fractional crystallization with solvents. J Am Oil Chem Soc 38, 286–289 (1961). https://doi.org/10.1007/BF02638428
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DOI: https://doi.org/10.1007/BF02638428