Effect of Vermicompost on Quality Index, Oxidation and Colour Ordinates of Hazelnut Oil

The present study aims to address this knowledge gap by investigating the impact of vermicompost (3-5 kg/Ocak; VM1 and VM2, respectively) on the linolenic/linoleic acid ratio (n3/n6), polyunsaturated/monounsaturated fatty acid ratio (PUFA/MUFA), monounsaturated/unsaturated fatty acid ratio (MUFA/SFA), and oil quality index values; Atherogenicity (AI) and thrombogenicity index (TI) values, hypocholesterolemic/hypercholesterolaemic fatty acids ratio (H/H) values and stability index (SI) value; fat oxidation parameters; oleic/linoleic acid ratio (O/L), free fatty acidity value (FFA, oleic acid %), rancimate value (RV, h) and colour properties. The lowest AI value was found in the VM1 treatment (0.05), while the highest value was found in the VM2 and control (0.06) treatments. The highest H/H (16.92) and SI (7.24) values were also observed in the VM1 treatment. Conversely, the highest RV and lowest FFA values were determined in the VM2 treatment, while variability was observed in terms of colour characteristics. The application of VM2 was found to be partially more prominent in terms of some traits, and when all these data were evaluated in general, it was concluded that it is of great benefit to continue the studies on vermicompost.