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Determination of oil in sunflowerseeds
Author(s) -
Kochhar S. P.,
Rossell J. B.
Publication year - 1987
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02641495
Subject(s) - husk , homogeneity (statistics) , particle size , pulp and paper industry , materials science , particle size distribution , environmental science , mathematics , chemistry , botany , statistics , engineering , biology
Abstract Oil content measurement in sunflowerseeds on an “as is” basis by current official methods is often associated with poor reproducibility. This study shows that the main factor contributing to this poor agreement is the particle size to which seeds are ground. This invariably influences the homogeneity of the bulk ground sample from which subsequent subsamples are taken. It is therefore suggested that oil content determinations on sunflowerseeds should be carried out on seed samples that have been evenly and finely ground, to a particle size not greater than 2.0 mm, in a mechanical mill such as the Ultra‐Centrifugal mill. Other factors investigated were seed composition (free husk, empty husk, crude fiber and seed meats) and structural differences in the seeds by light microscopy.