Comparative thermoanalytical study of soybean, sunflower, olive, peanut and linseed oils of Indian origin

AGFD 71

Ranjit K. Verma, rkvermamagadh@rediffmail.com, Lata Verma, lverma_chem@yahoo.com, and Kaushik Mallick. University Department of Chemistry, Magadh University, Bodh Gaya, 824234, India
The melting curves of soybean, sunflower, olive, peanut and linseed oils of Indian origin have been obtained on DSC using dinitrogen as the purge gas and heating rate programmed at 5 K/min (213-283K )and the thermo-oxidative curves(373-723K)were recorded keeping air as the purge gas and the heating rate programmed at 10 K/min. The samples were obtained from fresh seeds through solvent extraction. Solid-liquid ratio at different temperatures was obtained through partial integration of the melting curves. Onset temperatures of different peaks of different oils have been correlated with their stabilities and general compositions. Suggestions have been drawn for use of the oils under different temperature conditions.