Sterol composition of rapeseed varieties introduced in Bulgaria.

MAREKOV, I., B. DAMYANOVA, S. MOMCHILOVA, M. ZLATANOV, G. ANTOVA, M. ANGELOVAROMOVA and T. NENKOVA, 2009. Sterol composition of rapeseed varieties introduced in Bulgaria. Bulg. J. Agric. Sci., 15: 119-122 The composition of glyceride oils isolated from the seeds of 6 rapeseed varieties introduced in Bulgaria was investigated focusing on the biologically active substances: sterols and sterol esters. Sterols in the glyceride oils were found to be totally 3 g.kg-1 including 2 g.kg-1 free sterols and 1 g.kg-1 esterified sterols. β-Sitosterol predominated in both free and esterified sterols, being respectively 658–790 g.kg-1 and 471–700 g.kg-1, followed by campesterol and stigmasterol. Oleic acid (609–768 g.kg-1) was the main component among the fatty acids of the sterol esters, followed by palmitic acid (72–144 g.kg-1).