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vol. 18, nr. 1 (2011)



 
Effect of temperature and seed moisture content on the rate of tocopherols degradation during rapeseed storage
Marzena Gawrysiak-Witulska Małgorzata Nogala-Kałucka1, Aleksander Siger2, Jolanta Wawrzyniak1, Marzena Gawrysiak-Witulska, Aleksander Siger, Jolanta Wawrzyniak, Małgorzata Nogala-Kałucka2
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1 Institute of Plant Origin Food Technology, Poznan University of Life Sciences, ul. Wojska Polskiego 28, 60-637 Poznań
2 Department of Food Biochemistry and Analysis, Poznan University of Life Sciences, ul. Wojska Polskiego 28, 60-637 Poznań

vol. 18 (2011), nr. 1, pp. 55-0
abstract: The aim of the research was to examine the influence of temperature and seed moisture content on the rate of degradation of native tocopherols contained in rapeseed. The experimental material used in the study was rapeseed of cv, Californium. Seed samples of 10.2, 12.4 and 15.4% moisture content were stored in a thermostatic chamber, equipped with apparatus that enabled to maintain the moisture content of seed on the constant level, at temperatures of 25 and 30°C. Rapeseed was stored in constant humidity and temperature conditions up to the decrease of germination capacity below 75%. Changes in tocopherols contents in stored rapeseed were studied at 6-day intervals. The results of the study showed that temperature and moisture content of stored rapeseed have a significant influence on the rate of tocochromanols degradation.
keywords: rapeseed, storage, tocopherol degradation
original in: Polish