Topic
Rice bran oil
About: Rice bran oil is a research topic. Over the lifetime, 2102 publications have been published within this topic receiving 32504 citations.
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TL;DR: In this article, a visible spectra of unbleached mustard oil, rice bran oil, and their 10 mixtures is reported, showing that the 671.5 nm mustard oil band shows uniform hypsochromic shift up to 40% of rice brans, and at higher concentrations this shifting becomes irregular.
Abstract: Visible spectra between 520\s-700 nm of unbleached mustard oil, rice bran oil and their 10 mixtures are reported. Mustard oil shows its characteristic band at 671.5 nm, and rice bran oil shows two characteristic bands at 550 and 564 nm and a contour centered at about 656 nm. The 564 nm band starts emerging in mixtures even by the 5% presence of rice bran oil and takes its well resolved shape at higher ratios. The 671.5 nm mustard oil band shows uniform hypsochromic shift up to 40% of rice bran oil, and at higher concentrations this shifting becomes irregular. An approximate estimation of rice bran oil adulteration in mustard oil can be made by observing the shifted position of 671.5 nm band.
6 citations
TL;DR: In this paper, a two-step method following acidic and alkali catalyst was used for non-edible oil due to the unsuitability of using the straightINE catalyst for transesterification of high FFA present in rice bran.
Abstract: In this research work, biodiesel production by trans-esterification of three
raw materials including virgin and used edible oil and non edible oil has
been presented. A two step method following acidic and alkali catalyst was
used for non edible oil due to the unsuitability of using the straight
alkaline-catalyzed trans-esterification of high FFA present in rice bran
oil. The acid value after processing for rice bran, cottonseed and waste
cooking oil was found to be 0.95, 0.12 and 0.87 respectively. The influence
of three variables on percentage yield i.e., methanol to oil molar ratio,
reaction temperature and reaction time were studied at this stage.
Cottonseed oil, waste cooking oil and rice bran oil showed a maximum yield
of 91.7%, 84.1% and 87.1% under optimum conditions. Fuel properties of the
three biodiesel satisfied standard biodiesel fuel results.
6 citations
01 Jul 2016
TL;DR: In this paper, a modified zinc oxide (ZnO) with 0-15% (wt.) potassium through wet impregnation was used in transesterification of rice bran oil (RBO) to form biodiesel.
Abstract: Environmentally benign zinc oxide (ZnO) was modified with 0-15% (wt.) potassium through wet impregnation and used in transesterification of rice bran oil (RBO) to form biodiesel. The catalyst was characterized by X-Ray powder Diffraction (XRD), its basic sites determined by back titration and Response Surface Methodology (RSM) Box-Behnken Design (BBD) was used to optimize the modification process variables on the basic sites of the catalyst. The transesterification product, biodiesel was analyzed by Nuclear Magnetic Resonance (NMR) spectroscopy. The result reveals K-modified ZnO with highly increased basic sites. Quadratic model with high regression R2 = 0.9995 was obtained from the ANOVA of modification process, optimization at maximum basic sites criterion gave optimum modification conditions of K-loading = 8.5% (wt.), calcination temperature = 480 oC and time = 4 hours with response and basic sites = 8.14 mmol/g which is in close agreement with the experimental value of 7.64 mmol/g. The catalyst was used and a value of 95.53% biodiesel conversion was obtained and effect of potassium leaching was not significant in the process.
6 citations
Patent•
27 May 2009
TL;DR: In this paper, a method for extracting oryzanol from rice bran oil was proposed, which consists of four steps: crude rice brans oil is used as a raw material, the rice braned oil and normal hexane mixing oil are subjected to pre-deacidification by ethanol first, and then ory-zanol is enriched to nigre by NaOH solution, and oryzol sodium salt is extracted from the nigre using methanol, and finally by regulating the pH value by acid solution, the oryZol contained in the
Abstract: The invention provides a method for extracting oryzanol, which belongs to the field of oryzanol preparation. The method comprises the following steps: crude rice bran oil is used as a raw material, the rice bran oil and normal hexane mixing oil are subjected to pre-deacidification by ethanol first, and then oryzanol is enriched to nigre by NaOH solution, and oryzanol sodium salt is extracted from the nigre by methanol, and finally by regulating the pH value by acid solution, the oryzanol contained in the oryzanol sodium salt is separated out; when ethanolamine deacidification is applied to the production method of the oryzanol, nearly 20 percent loss of the oryzanol caused by alkali refining in the prior method is avoided, and the oryzanol yield is improved from 30 to 35 percent in the prior method to 60 to 70 percent in the method of the invention; moreover, because ethanol can not saponify glyceride, the loss rate of the crude oil caused by deacidification is greatly reduced, from 15 to 25 percent in the prior method to 2 to 5 percent in the method of the invention. The nigre ethanolamine fatty acid generated in the method can be used for cosmetics manufacturing industry to further increase added values.
6 citations
Patent•
30 Jul 2014
TL;DR: In this article, a method for extracting rice bran oil from Rice bran was proposed, where the acid value of the prepared product was maintained at 0.1-1.0mg/g.
Abstract: The invention relates to the technical field of extraction of vegetable oil from a plant, and particularly relates to a method for extracting rice bran oil from rice bran. The method comprises the following steps: rice bran pretreatment, crude bran oil extraction, crude bran oil alkali refining, added oil drying, decolorizing, deodorization, deacidification, dewaxing, degumming, fractionation and degreasing, wherein the acid value of the prepared product rice bran oil is maintained at 0.1-1.0mg/g, the acid value of the rice bran oil is further reduced, and the quality of the rice bran oil is improved. The method is simple in process, and the rice bran is comprehensively utilized when the rice bran oil is extracted, so that not only is the rice bran applied to a stock feed, but also the rice bran oil is extracted from the rice bran, meanwhile, feed nutrition oil is obtained, the nutrient value of the rice bran as the feed is improved, the additional value of the rice bran is increased, and the production cost of the rice bran oil is reduced.
6 citations