Ultrafiltration-based Degumming Of Crude Rice Bran Oil Using A Polymer Membrane

Membrane technology has been gaining momentum in industrial processes, especially in food technology. It is believed to simplify processes, reduce energy consumption, and eliminate pollutants. The objective was to study the performance of polyvinylidene fluoride (PVDF) and polyethersulfone (PES) polymeric membranes in the degumming of the miscella of crude rice bran oil by using a bench-scale tangential filtration module. In addition, oil miscella filtration techniques using hexane and anhydrous ethyl alcohol solvents were compared. All membranes showed the retention of phospholipids and high flow rates. However, the best performance was observed using the 50-kDa PVDF membrane in miscella hexane solvent, with a 95.5% retention of the phosphorus concentration (by a factor of 1.4), resulting in a permeate with 29 mg.kg(-1) of phosphorus and an average flow rate of 48.1 L.m(-2).h(-1). This technology can be used as a low-pollution, economical alternative for the de-gumming of crude rice bran oil, being effective in the removal of hydratable and non-hydratable phospholipids, resulting in oils with a low phosphorus content.67

Deacidification of high acidic rubber seed oil by reesterification with glycerol

Some studies have shown that rubber seed oil (RSO) from the seed of rubber tree (hevea brasiliensis)has potential technical applications. However, the high free fatty acid (FFA) associated with the oil may be a limiting factor in its applications. In this study, crude rubber seed oil (RSO) containing 37.69% FFA was deacidified using 4.3-5.6% of glycerol. The reactions were carried out at a pressure of 20mmHg in the presence of zinc dust and zinc chloride catalysts added separately at high temperature (150 – 2500C). The progress of the reaction was monitored by determining the FFA at various time intervals.The FFA content in the RSO was reduced to 1.5% in six hours when 4.3% glycerol was used with zinc dust at a temperature of 2000C while the triglycerides content of the oil increased from 40.32% in the crude oil to 80.62% in the deacidified RSO. The study showed that this process is effective in the deacidification of RSO without loss of neutral glycerides as in alkali neutralization

Retirees Chart New Courses

Four Linfield College friends bid goodbye to campus routines and hello to retirement. Longtime Linfield educators Larry Marsh, professor of music; Sandie Kiehl, associate professor of business; David Groff, associate vice president for academic affairs and director of the Portland Campus; and Bonnie Long, visiting instructor in business, share plans for their future - some of which include Linfield

Comparison of safflower oil extraction kinetics at two characteristic moisture conditions: Statistical analysis of non-linear model parameters

In this study the kinetics of oil extraction from partially dehulled safflower seeds at two moisture conditions (7 and 9% dry basis) was investigated. The extraction essays were performed using a stirred batch system, thermostated at 50 ºC, using n-hexane as solvent. The data obtained were fitted to a modified diffusion model in order to represent the extraction kinetics. The model took into account a washing and a diffusive step. Fitting parameters were compared statistically at both moisture conditions. The oil yield was increased in the extraction time in both cases, although the oil was released at different rates. A comparison of the parameters showed that both the extracted portion in the washing phase and the effective diffusion coefficient were moisture-dependent. The effective diffusivity was 2.81 10-12 and 8.06 10-13 m2 s-1 for a moisture content of 7% and 9%, respectively.Fil: Baumler, Erica Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ingenieria Olavarria. Departamento de Ingenieria Quimica; ArgentinaFil: Fernández, María Belén. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ingenieria Olavarria. Departamento de Ingenieria Quimica; ArgentinaFil: Nolasco, Susana Maria. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ingenieria Olavarria. Departamento de Ingenieria Quimica; ArgentinaFil: Perez, Ethel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ingenieria Olavarria. Departamento de Ingenieria Quimica; Argentin

Optimizing the Oil Extraction/Water Adsorption Step in Sequential Extraction Processing of Corn

The Sequential Extraction Process (SEP) uses ethanol to extract oil and protein from cracked, flaked, and dried corn, and the corn simultaneously dehydrates the ethanol. The optimum conditions to reduce zein extraction in the oil extraction/water adsorption step of SEP involved a single–pass system using 15 length/diameter ratio extraction cells, 30% hexanes: 70% ethanol, and 56C extraction temperature, which improved the efficiencies of oil extraction from the corn and moisture adsorption from the ethanol. The extract contained only 0.1% protein in the desolventized solids. The moisture content of the solvent was reduced to 1.03%, and the residual oil content of the corn was 0.18%. Oil recovery was improved from 90.8% to 95.5%. The countercurrent laboratory extraction system confirmed that using 30% hexanes:70% ethanol at 56C in a single–pass system reduced zein co–extraction with oil while increasing oil extraction and moisture adsorption