Spectroscopic and chromatographic evaluation of solvent extracted guava seed oil

The aim of present study was to extract the guava seed oil for its quantitative determination and to evaluate chemical characteristics including fatty acid composition and to compare with reported literature. Average oil content of guava seeds was found to be 11.12 g oil /100g seed. The iodine value, acid value, free fatty acid, peroxide value and saponification value were found to be 120.55 g of I2/100 g oil, 3.74 g/100g of oil, 1.86 g/100 g oil, 4.13 mEq/kg of oil and 190.74 mg/100 g of oil, respectively. Fatty acid composition was evaluated by gas chromatography-mass spectrometry and Fourier transform infrared spectroscopy. By GC-MS, a total of eighteen fatty acids were identified from which twelve were saturated fatty acids (SFAs) and six were unsaturated fatty acids (USFAs). Among SFAs, palmitic acid, stearic acid and arachidic acid were dominant, while linoleic and oleic acids were main USFAs found in guava seed oil. GC-MS results indicated that guava seed oil is a good source of essential f...