CONCLUSION
The high amount of hulls in silflower seeds makes for a good case for
dehulling before oil extraction. Dehulling reduces the volume of
material, thus increasing the throughput of the oil extractor. Stripping
the hulls from the kernel by using a corrugated roller-mill is a
promising method and needs to be optimized further. Grading the seeds by
thickness will facilitate the milling process by reducing the number of
passes through the rollers with the seeds of similar thickness.
By optimizing the dehulling
process, it is possible to produce defatted meal well within the range
of a protein concentrate. This high protein meal is also a good starting
material for enriching the protein further into a protein isolate.