Crude oil yield and properties of rice bran oil from different varieties as affected by extraction conditions using soxhterm method

The current study was employed to investigate the effect of solvent type, extraction time and bran ratio on the rice bran oil (RBO) properties from three varieties of rice bran namely Bario, lowland and upland rice. RBO was extracted by using soxtherm extraction method using methanol solvent at different extraction time (3, 4 and 5 h) and bran ratio (10, 20 and 30 g). Free fatty acid (FFA), total phenolic content (TPC) and antioxidant properties were assessed. Solvent that has low polarity exhibited the attraction of polar component of oil with the highest yield by ethanol (16.16%), followed by methanol (15.38%). FFA contents occurred higher in lowland types of rice bran in all types of solvents at P<0.05 with ethanol (12.73%), methanol (11.96%) and hexane (11.13%), while the total phenolic content and antioxidant properties were influenced by the types of rice bran and solvents used for extracting components out of the bran. The highest phenolic content in the crude oil was extracted using ethanol in lowland (0.509 mg/ml), and the lowest was extracted by hexane in Bario (0.061 mg/ml). The highest antioxidant activity was observed in RBO extracted using methanol of lowland (73.74%) and RBO extracted using ethanol of upland (73.65%), while the lowest were observed in RBO extracted using hexane. The different types of solvent have the significant impact on the crude oil yield and properties of crude oil extracted

A study of some aspects of capillary electrophoresis in drug analysis

Produced in collaboration with Khon Kaen University, ThailandAvailable from British Library Document Supply Centre-DSC:DX179709 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Developing a model to suit whole life costing analysis and applications for assets in the oil and gas industry

Available from British Library Document Supply Centre-DSC:DXN048894 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

The potential of jackfruit starch for use as suspending agent and emulsifying agent

Due to the physicochemical properties of jackfruit (JK) seed starch, it is interesting to use jackfruit mucilage for cosmetic application. The aim of this study was to investigate the physical properties and the effectiveness of JK mucilage at the range of 1 to 5% w/v for using as suspending agent and emulsifying agent. It was found that the pH of 3% w/v JK mucilage was 4.63±0.11. At the concentrations lower than 3% w/v the mucilage exhibited newtonian flow whereas at higher concentration the mucilage showed pseudoplastic with thixotropic flow. As increased the concentration of JK mucilage, the surface tension of purified water was reduced to the range of 1.77-3.8 mN/m and the interfacial tension between water and mineral oil was reduced to the range of 9.07-12.43 mN/m. The viscosity of the mucilage was reduced dramatically in acid pH but in salt solution at the concentrations lower than 2% w/v, the viscosity was increased. In addition, the JK mucilage was able to flocculate Titanium dioxide. Even though the JK mucilage was able to thicken the external phase of emulsion, it exhibited as a poor emulsifier. The JK mucilage, therefore, has the potential for use as a suspending agent and thickening agent in cosmetic products