ORIGINAL RESEARCH
Effect of Storage Period on Physicochemical
Properties of Rapeseeds and Oil
Agnieszka Sujak1, Magdalena Kachel-Jakubowska2
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1Department of Physics, University of Life Sciences in Lublin, Poland
2Department of Machinery, Agricultural Exploitation and Management in Agricultural Engineering,
University of Life Sciences in Lublin, Poland
Pol. J. Environ. Stud. 2012;21(3):719-723
KEYWORDS
ABSTRACT
The physicochemical parameters of rapeseeds stored under laboratory conditions for up to 3 years were
measured by spectroscopic techniques. Humidity, crude fat, sulphur-containing species in seeds and levels of
carotenoids and chlorophylls in oils were assigned. For most of the seeds the minimal technological quality
requirements were met. Lipid oxidation products in oils were estimated by the levels of the end products of
lipid peroxidation. Interestingly, the oxidation of the lipids was not higher in the oils pressed from older seeds.
In conclusion, the material stored for a long period is a valuable product for further processing.