The effect of the screw press rotational speed on phenolic compounds and physicochemical properties of Black Cumin Seed Oil

Subject Areas :

Received: 2017-01-23 Accepted : 2017-01-23 Published : 2016-12-20

Keywords: Physicochemical properties, Total phenolic compounds, Black cumin seed oil, Screw rotational speed,

Abstract :

More than 90 percent of oil consumption comes from abroad. Thus increasing the area under cultivation and the cultivation of new oilseeds, two important approaches in achieving the country's supply of oil is required. In this study, effect of screw rotational speed on physicochemical properties of prepared oil from black cumin seed investigated that involved extraction efficiency, Peroxide value, Refractive index, Total phenolic compounds, density and Color index. The experiments analyzed by complete randomized design with tree level of screw rotational speed (11, 33 and 57 rpm). The experiment was repeated three times to determine mean values. Results showed, When the rotational speed of 11 rpm the efficiency of the extraction process to extract the maximum performance with an average of 54.85%. With increasing screw rotational speed peroxide value, total phenolic compounds, density and color index was increased. Results also showed that the screw rotational speed on oil refractive index no significant effect (P>0.01).