Discussion
Statement I: Dehulling raises both the yield and the capacity of an extraction plant.
Statement II: Hulls carry very little oil but absorb a good deal of it during processing.
In the light of the above statements, choose the correct answer.
Answer: A
Correct answer: Both Statement I and Statement II are correct
Both are true and the second explains the first, on two counts. Hulls carry almost no oil, so removing them concentrates the oil in the feed - more oil handled for the same plant throughput, which is the capacity gain.
Hulls are also absorbent and would soak up oil during processing, carrying it out in the cake. Removing them therefore raises the yield as well. The hulls are not wasted: they are usually burned for steam or blended back into low-protein feed, so dehulling costs little beyond the equipment.
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