The effect of the processing parameters of Roselle seed on its oil yield was investigated.The seeds were ground and classified into two particle sizes(fine and coarse)using ASAE Standard S319.3.The samples were condit...The effect of the processing parameters of Roselle seed on its oil yield was investigated.The seeds were ground and classified into two particle sizes(fine and coarse)using ASAE Standard S319.3.The samples were conditioned by adding calculated amount of distilled water to different moisture levels from the initial moisture levels of 4.4%and 5.14%respectively,(fine,4.4%,6.4%,8.4%and 10.4%and coarse samples 5.14%,7.14%,9.14%and 11.14%w.b.).The samples were heated at different temperatures of 80,90,100 and 110℃over a period of 15,20,25 and 30 min,expressed at 15,22.5,30 and 37.5 MPa using hydraulic oil extractor for 10,20,30 and 40 min.Oil yield increases by 5%-6%with an increase in the processing parameters of pressure up to 30 MPa,temperature of 100℃and decreased beyond these points.Oil yield increased by 7%-8%with an increase in moisture content.Finely ground samples were found to have higher yield than coarsely ground samples at the different processing parameters.Processing parameters were found to affect the yield of oil from Roselle seeds.展开更多
文摘The effect of the processing parameters of Roselle seed on its oil yield was investigated.The seeds were ground and classified into two particle sizes(fine and coarse)using ASAE Standard S319.3.The samples were conditioned by adding calculated amount of distilled water to different moisture levels from the initial moisture levels of 4.4%and 5.14%respectively,(fine,4.4%,6.4%,8.4%and 10.4%and coarse samples 5.14%,7.14%,9.14%and 11.14%w.b.).The samples were heated at different temperatures of 80,90,100 and 110℃over a period of 15,20,25 and 30 min,expressed at 15,22.5,30 and 37.5 MPa using hydraulic oil extractor for 10,20,30 and 40 min.Oil yield increases by 5%-6%with an increase in the processing parameters of pressure up to 30 MPa,temperature of 100℃and decreased beyond these points.Oil yield increased by 7%-8%with an increase in moisture content.Finely ground samples were found to have higher yield than coarsely ground samples at the different processing parameters.Processing parameters were found to affect the yield of oil from Roselle seeds.
