EXTRACTION, CHARACTERIZATION AND FTIR ANALYSIS OF OIL EXTRACTED FROM COTTON SEED (GOSSYPIUMHIRSUTUM)

Abstract

In this study cottonseed oil extracted from Gossypiumhirsutum (Cotton seed) was carried out. The extraction was done using soxhlet method with n-hexane as the solvent. The extracted oil was characterized by different parameters. This includes the acid value, the free fatty acid value, the saponification value, the boiling point, the density, the pH value as well as the FT-IR spectra. The acid value, free fatty acid value, saponification value, and boiling point were found to be 3.903 mg KOH/g, 1.914 mg KOH/g, 193.23 mg KOH/g and 2340C respectively. The density of the oil was found to be 0.928 gcm-3 , while the pH value was 5.6. FT-IR analysis was carried out to ensure the quality of the extracted oil. The functional groups detected were sp2 CH stretches, sp3 C-H stretches, a strong band of –C=O of an ester and medium band of –C-O of an ester, this confirmed that the oil was not rancid and my resist rancidity due to the presence of tocopherol. The oil was found to be edible and of numerous potentials domestically and industrially after comparisons were made with values obtained from literature.