The water sorption isotherms of seeds, flakes and press-cakes of rapeseed from small farm oil plant were studied. The sorption isotherms of all press-cakes examined could have been identified as the III type curves in BET classification. Empirical Smith’s equation was found to describe best the moisture sorption behaviour of rapeseed press-cake. Small differences were observed between the moisture adsorption isotherms of whole and ground (raw flakes) seeds. A distinct decrease of roasted flakes and an increase of adsorbed moisture in press-cakes was found. The moisture adsorption of press-cakes from unhulled seeds is higher than on oil-cakes obtained from hulled seeds, in which higher mechanical cell destruction and oil leakage were observed. An addition of bran to press-cakes caused an increase of moisture adsorption.
W artykule przedstawiono temperaturę, w jakiej powinna być przewożona żywność szybko się psująca. Przedstawiono skutki niedotrzymywania warunków dotyczących wymaganej temperatury. Podano klasyfikację nadwozi do transportu żywności zgodnie z umową ATP Omówiono badania certyfikacyjne nadwozi. Podkreślono potrzebę rejestracji temperatury podczas przewozu żywności.