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  • Can a screw press extract soya bean oil?
  • Previous studies on soya bean oil extraction using the screw press are very limited. Those studies investigated the effect of preheating seed moisture content, heating temperature, heating duration, screw press speed, and extraction pressure on soya bean oil yield (Akinoso et al., 2009).
  • What is the optimum pressing condition for soya bean oil extraction?
  • The lowest oil yield of 11.1 % was obtained for the conditions of 70 rpm screw shaft speed and 3 mm choke clearance. However, the screw speed of 110 rpm and choke clearance of 1 mm were considered to be the optimum pressing condition for soya bean oil extraction.
  • What are the factors affecting a soya bean oil screw press?
  • The most important screw press variables are screw press speed and screw choke gap (Sayasoonthorn et al., 2012). A good understanding of the influence of these process variables is important for the design and efficient operation of a soya bean oil screw press.
  • What is the optimal screw press speed for soya bean oil extraction?
  • The following conclusions could be drawn from the results of the study: The screw choke clearance should be equal to or smaller than 1 mm to achieve high soya bean oil extraction efficiency. The optimal screw press speed was found to be 110 rpm for the screw press.
  • Does screw speed affect soya bean oil yield?
  • Both the screw speed (within the range of 70 to 110 rpm) and choke clearance (within the range of 1 to 3 mm) studied, produced significant differences in soya bean oil yield. Analysis of results showed that the values of the screw press variables for high soya bean oil yield are screw speed of 110 rpm and choke clearance of 1 mm.
  • Why is soya bean a good source of oil?
  • The soya bean is well known as a source of oil which is known edible and industrial oil, and soya bean cake which is a useful component of livestock feeds. Separation of oil from oilseeds is an important processing operation.