Extraction of residual oil from fragrant peanut oil filter cake（1）

Extraction of residual oil from fragrant peanut oil filter cake（1）
In the processing technology, in order to maintain the unique aroma of aroma peanut oil, degumming (dephospholipidation) generally does not use hydration method, but uses two methods of low temperature cold filtration at 18 °C. To carry out, there is about a filter cake of about 1.5% of the raw material (mainly a mixture of solid phospholipids and peanut cakes), and the filter cake still contains about 45 oil after being squeezed again by the filter cake extruder.
At present, each peanut oil processing enterprise basically treats it directly as a by-product, so that a large amount of oil contained in the filter cake is wasted, and the economic benefit is poor. In the production practice, through the comparison of the two schemes for the extraction of residual oil from the filter cake, a suitable method for extracting residual oil was finally found.

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