Impact of heating conditions of rapeseed and mustard seeds on the characteristics of oils for the biodiesel production
Journal Title: Rośliny Oleiste - Oilseed Crops - Year 2013, Vol 34, Issue 1
Abstract
The aim of the study was to determine the effect of heating conditions of rapeseed and mustard seeds on the pressing yield and characteristics of oils as potential materials for the biodiesel productions. Oils have been pressed from seeds heated at temperatures of 60, 80 and 100°C for 30, 60 and 90 minutes. Pressing was carried out in a laboratory expeller. Quality of oils was defined by determining water and volatile compound contents, the degree of hydrolysis and oxidation, content of chlorophyll and phosphorus, color and the fatty acids composition. It was found that with the increasing temperature and time of heating condition the yield of pressing increased while the quality of oils deteriorated. Oils extracted from seeds heated in the most drastic conditions, 100°C/90 min, were characterized by the lowest water and volatile compounds content and the highest amount of free fatty acids, peroxides, chlorophyll pigments and phosphorus compounds. It was also shown that heating of rape seeds has not changed the fatty acids composition. Taking into consideration the yield of pressing and the quality of oils in terms of suitability for the biodiesel production, the most optimum heating condition of seeds was at 80°C for 60 min.
Authors and Affiliations
Małgorzata Tańska, Daniela Rotkiewicz, Marta Ambrosewicz-Walacik
Keywords
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- EP ID EP59747
- DOI 10.5604/12338273.1083537
- Views 167
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