| 摘要 |
In a process for reducing the oil content of oil rich snack foods such as potato-based and cereal based ready-to-eat products which consist of thin slices, flakes or other shapes and are optionally flavoured, the oil is "washed out" of the snack food in an extraction vessel using a solvent as a liquefied gas in the liquid phase, the resulting oil-rich solvent is passed through a heat exchanger, the separated oil is collected (distilled out) and the gaseous distillate is recondensed into liquefied gas in the heat exchanger and recycled to the extraction vessel. Apparatus described includes an extraction vessel 1 having snack food inlet part 33 as shown, and above part 33 an outlet part (43), sparge ring 53 for supplying liquefied gas and perforated shelf 50 capable of reciprocating linear and/or rotary vibration. <IMAGE> |
