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Extraction of cottonseed oil with ethyl alcohol

Extraction of cottonseed oil with ethyl alcohol

Oil Mill Gazetteer 89(4): 10-11

An aqueous 95% ethyl alcohol-based process was developed as an alternative to hexane extraction of oilseeds. The problem of gummy precipitates extracted by the alcohol was overcome by a 3-phase refining step, involving homogenizing with 10% NaOH and centrifuging. This yields 3 distinct phases which are easily separated. The laboratory process is about to be scaled up to pilot plant scale.

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