Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

STUDIES ON THE EFFECT OF DIFFERENT SOLVENTS AND OPTIMIZATION OF TEMPERATURE, TIME AND PARTICLE SIZE FOR THE EXTRACTION OF CORN OIL (Pages : 5 - 9)

Effect of three different solvents namely n-hexane, chloroform and ethanol (absolute) for the extraction of oil from ground corn were investigated. Dried ground corn of three different particle sizes 123, 150 and 180 µm were taken for extraction. Extractions were carried out at different temperatures 25, 50 and 68°C for 1 to 8 hours with 1 hour interval. Maximum yield were 5, 4.5 and 3.8% for n-hexane, chloroform and ethanol respectively. It was found that the amount of oil extracted from 123 µm was the highest (5%) at the temperature 68°C for 5 hours extraction time. Considering the yield of oil, the optimal conditions were: (i) extraction time 5 hours, (ii) temperature 68°C and (iii) particle size 123 µm. Under these conditions the extraction were then carried out using three different solvents for observing the effect of extracting solvents on physico-chemical characteristics, lipids and glyceride compositions and fatty acids of the oil. The total lipids were fractionated into lipid classes by silicic acid column chromatography. The neutral lipids were found to be 86.31, 86.98 and 87.06%, glycolipids 9.97, 9.69 and 9.39% and phospholipids 3.71, 3.32 and 3.54% for n-hexane, chloroform and ethanol, respectively.Download