Akademik Veri Yönetim Sistemi
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, cilt.92, sa.3, ss.345-351, 2015 (SCI-Expanded)
The present study was undertaken to determine the profile of the (n-9) and (n-7) isomers for C18:1, C20:1 and C22:1 fatty acids in radish seeds as well as their isomers. Radish (Raphanus sativus L. cvs. 'Antep, Beyaz, Cherry Belle and Iri KA +/- rmA +/- zA +/-') seeds were produced in 2003-2005 from different sowing dates (SD). The n-7 isomers of C18:1, C20:1 and C22:1 ranged from 0.7 to 1.3, 0.1 to 0.3 and 0.4 to 1.1 %, respectively. The average values of C18:1(n-7) was highest (1 %) amongst the three acids. The ratios of (n-7)/(n-9) ranged from 4.5 % ('Cherry Belle', SD-I) to 8.3 % ('Antep', SD-III), 0.8 % ('Iri KA +/- rmA +/- zA +/-', SD-II) to 3 % ('Iri KA +/- rmA +/- zA +/-', SD-I) and 1.6 % ('Cherry Belle', SD-I) to 3.7 % ('Iri KA +/- rmA +/- zA +/-', SD-I) for C18:1, C20:1 and C22:1. Erucic acid was the principal fatty acid with concentrations of nearly 34-39 % in 'Antep', 32-34 % in 'Cherry Belle', 30-33 % in 'Beyaz' and 21-22 % in 'IrA +/- KA +/- rmA +/- zA +/-'. The oleic acid content was higher in SD-I and SD-II than SD-III in all cultivars. Correlation studies revealed that palmitoleic acid (C16:1) had a significant relationship between most of the fatty acids of the (n-7)/(n-9) family. The results indicated that palmitoleic acid is important in the synthesis of long-chain fatty acids and that the data for the (n-7)/(n-9) ratios for C22:1 could be used as biochemical markers to determine the similarities or differences between radish cultivars.