The oil content and sterol composition of spring oilseed rape seeds
2005
Maeeorg, E., Estonian Agricultural Univ., Tartu (Estonia) | Laeaeniste, P., Estonian Agricultural Univ., Tartu (Estonia) | Joudu, J., Estonian Agricultural Univ., Tartu (Estonia) | Maeeorg, U., University of Tartu (Estonia). Inst. of Organic and Bioorganic Chemistry
Rapeseed (Brassica napus L. var. oleifera subvar. annua) is now the third most important source of vegetable oil in the world. While the growing area of rapeseed in Estonia has increased tremendously in the last two decades, the yields have remained relatively low. In Estonia, it is mainly grown for oil (cooking, salad dressings, etc.) and for protein-rich animal feed. Having very low content of saturated fatty acids and a relatively high content of polyunsaturated fatty acids and also being one of the richest sources of phytosterols, makes rapeseed oil very valuable from nutritional point of view. The goal of present research was to investigate the oil content of seeds according to fertilization and phytosterol content in oil of the spring rapeseed cultivar 'Mascot'. In the trials different microfertilizers were used. At harvest, the seed samples were collected. The oil content of seeds and the sterol content of the oil were analyzed. The analysis of the test results revealed that fertilizer solutions with different microelements had positive effect on the oil content of rape seeds. The total sterol content of the oil from cultivar 'Mascot' varied between 5220-6550 mg kgE-1. It was mainly influenced by weather (different year), while the use of different fertilizers did not have clear influence on the concentration and composition of sterols in oil.
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