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Air classification of rapeseed meal using the tervel separator
Author(s) -
Diosady L. L.,
Rubin L. J.,
Tar C. G.,
Etkin B.
Publication year - 1986
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450640508
Subject(s) - rapeseed , meal , separator (oil production) , food science , fraction (chemistry) , chemistry , chromatography , physics , thermodynamics
The University of Toronto Tervel Separator was used to fractionate ground, defatted rapeseed meal into protein enriched, and high‐fibre products suitable for inclusion into food products and feed respectively. The meal was screened into fractions of a narrow range of particle size and classified at air speeds chosen to utilize as much of the collection area of the separator as possible. The meat‐rich and hull‐rich cuts were chosen arbitrarily, the cut point being a compromise between pure meat fraction and the greatest possible yield of the meat‐rich fraction. All meat‐rich samples had an increased protein content compared to the original oil‐free meal (43.1%). The 300/425 μm, 425/600 μm, and 600/850 μm meat‐rich fractions had a protein content (moisture‐, and oil‐free basis) of 54.4%, 55.6% and 49.5%, respectively. These meat‐rich fractions contained 28.7%, 20.9% and 15.3% of the protein present in the feed material for a total protein recovery of 64.9% in approximately 55% of the meat weight. The protein‐rich fraction is competitive with dehulled soya meal on the basis of protein content.