The extraction of oil from rice bran by d-limonene and hexane (for comparison) has been carried out at their respective boiling points at various solvent-to-meal ratios and for various extraction times.
The preliminary data suggested that the optimum solventoeal ratio and extraction time required for dimonene extraction of rice bran oil to be 5:1 and 1 h respectively. The initial quality characteristics (free fatty acid content, oil color, phospholipid content) of crude oil extracted under these optimum conditions were analyzed ...
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The extraction of oil from rice bran by d-limonene and hexane (for comparison) has been carried out at their respective boiling points at various solvent-to-meal ratios and for various extraction ...
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The rice bran was characterized regarding total oil content, moisture, particle size and density, according to the following descriptions. To determine the total oil content, 1 g of rice bran was extracted using 200 mL of hexane as solvent in a Soxhlet apparatus (Marconi, Model MA491/6, Piracicaba, SP, Brazil) during two hours.
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d-Limonene, a safe agricultural by-product, was used to extract rice bran oil and compared against hexane, a petroleum product widely used as a solvent for extracting edible oil. The yield of crude rice bran oils extracted with both solvents in percentage by weight was obtained. The quality of crude rice bran oil was analyzed. The yield and ...
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d-Limonene, a safe agricultural by-product, was used to extract rice bran oil and compared against hexane, a petroleum product widely used as a solvent for extracting edible oil. The yield of crude rice bran oils extracted with both solvents in percentage by weight was obtained. The quality of crude rice bran oil was analyzed.
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In fact, a previous study of this research group, which has also studied the use of ethanol in the extraction of rice bran oil, investigated the possibility of combining the extraction and deacidification steps when ethanol is used as the solvent (Oliveira et al., 2012a). In order to achieve this aim, the authors collected liquid-liquid ...
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Limonene is a substitute for petroleum solvents such as dichloromethane, toluene, or hexane for the extraction of natural products. This chapter provides the necessary theoretical background and some details about extraction using limonene, the techniques, the mechanism, some applications, and environmental impacts.
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The protein yield obtained in this study using yeast treatment of rice bran is higher than the value (13.4%) reported by Shih (1999) using 伪-amylase treatment of rice bran at extraction temperature of 95掳C, pH 6.5 for 45 min. Jiamyangyuen et al. obtained a protein yield of 8.06% at optimal extracting conditions (pH 11 and 45 min) of rice bran ...
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Extraction of Rice Bran Oil Using Limonene: A Mathematical Model for Rice Bran Oil Uptake . Conference Paper (PDF Available) · November 2012 with 339 Reads How we
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In our work, a mathematical model for rice bran oil uptake using limonene will be presented. The kinetics of the mass transfer of the RBO extraction was studied using intraparticle gradient and no
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Oliveira et al. (2012b), on the other hand, studied the feasibility of using ethanol as an alternative extraction solvent for rice bran oil in terms of the quality of the extracted oil. The levels of nutraceutical compounds present in the extracted oil indicate that obtaining enriched oil using this renewable solvent is
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The extraction of oil from rice bran by dimonene and hexane (for comparison) has been carried out at their respective boiling points at various solventoeal ratios and for various extraction times. The preliminary data suggested that the optimum solventoeal ratio and extraction time required for dimonene extraction of
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The rice bran was characterized regarding total oil content, moisture, particle size and density, according to the following descriptions. To determine the total oil content, 1 g of rice bran was extracted using 200 mL of hexane as solvent in a Soxhlet apparatus (Marconi, Model MA491/6, Piracicaba, SP, Brazil) during two hours. Moisture content
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The preliminary data suggested that the optimum solvent-to-meal ratio and extraction time required for d-limonene extraction of rice bran oil to be 5:1 and 1 h respectively. The initial quality characteristics (free fatty acid content, oil color, phospholipid content) of crude oil extracted under these optimum conditions were analyzed using
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08.02.2012· Limonene is a substitute for petroleum solvents such as dichloromethane, toluene, or hexane for the extraction of natural products. This chapter provides the necessary theoretical background and some details about extraction using limonene, the techniques, the mechanism, some applications, and environmental impacts.
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The protein yield obtained in this study using yeast treatment of rice bran is higher than the value (13.4%) reported by Shih (1999) using 伪-amylase treatment of rice bran at extraction temperature of 95°C, pH 6.5 for 45 min. Jiamyangyuen et al. obtained a protein yield of 8.06% at optimal extracting conditions (pH 11 and 45 min) of rice bran protein without any treatment.
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Extraction of Rice Bran Oil PDF Free download as PDF File (.pdf), Text File (.txt) or read online for free. Extraction-of-rice-bran-oil-pdf
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(Comparative Example 1) It extracted for 180 minutes at 163 degreeC using the Soxhlet extractor with respect to 1 mass part of rice bran using d-limonene. D-Limonene was removed from the resulting extract to obtain rice bran oil. The production yield of rice bran oil was 0.244 g / g-dry raw material.
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US2727914A Rice bran oil extraction process Google Patents Rice bran oil extraction process Download PDF Info Publication number US2727914A. US2727914A US314234A US31423452A US2727914A US 2727914 A US2727914 A US 2727914A US 314234 A US314234 A US 314234A US 31423452 A US31423452 A US 31423452A US 2727914 A US2727914 A US 2727914A Authority US United States Prior art keywords rice bran
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In general the results show that the total deacidification of rice bran oil by liquidiquid extraction is possible. The losses of neutral oil (TAGs) and nutraceutical compounds can be controlled by the choice of solvent. In addition it can be suggested that the conditions corresponding to oil solvent mass ratios around of 1:1, water content
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hydrophobicity) of the desired compounds. Steam distillation, the method used in this lab for essential oil extraction, takes advantage of the volatility of a compound to evaporate when heated with steam and the hydrophobicity of the compound to separate into an oil phase during condensation.
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Abstract Aqueous extraction of oil from rice bran was studied on a laboratory scale and the resulting product was examined. The following process parameters influencing oil extraction were individu...
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Polish Journal of Chemical Technology The Journal of West Pomeranian University of Technology, Szczecin
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Herein is described a green and original alternative procedure for the extraction of oil from microalgae. Extractions were carried out using terpenes obtained from renewable feedstocks as alternative solvents instead of hazardous petroleum solvents such as n-hexane. The described method is achieved in two steps using Soxhlet extraction followed by the elimination of the solvent from the medium
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Currently, the citrus processing industry generates a voluminous waste stream in regions characterized by an important citrus production. This solid waste, mainly constituted by orange peel waste (OPW), represents more than half of the raw material, and it could be exploited for the production of bio-based products and bio-fuels, according to the waste hierarchy. d-limonene, the main component
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A Simplified Model to Describe the Kinetic Behavior of Supercritical Fluid Extraction from a Rice Bran Oil Byproduct . the CER period, what makes this step the most important one in terms of process design. Therefore, for many industrial applications, the extraction process ends shortly after the
Get PriceABSTRACTThe extraction kinetics of rice bran oil (RBO), free fatty acids (FFA), and oryzanol using ethanol (0 and 6.3 mass % of water) at 40°C0°C were investigated. High extraction temperatures increased the yields of RBO and oryzanol by increasing the diffusivity of the solvent, regardless of its water content. Two models that permitted the estimation of mass transfer and diffusion
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Pilot Scale Extraction and Fractionation of Rice Bran Oil Using Supercritical Carbon Dioxide. Journal of Agricultural and Food Chemistry 1997,45 (12),4540-4544. DOI: 10.1021/jf970292w.
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It was found that rice bran oil extraction can be efficiently performed in 30 min under high-intensity ultrasound either using hexane or a basic aqueous solution. Extraction rates of carvone and limonene by ultrasound-assisted extraction with hexane were 1.3 times more rapid than those by the conventional extraction depending on temperature
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orelos riceis a variety of rice with certificate of denomination of origin. It is a large grain of opaque appearance and extra large size that is grown exclusively in Morelos state (Mexico). Thus, the quality and characteristics of its rice bran may affect the kinetic of the extraction process of its oil
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The optimum solvent-to-rice bran ratio and extraction time required for d-limonene extraction of oil, based primarily on crude rice bran oil yield, have been determined to be 5:1 and 0.5 hr, respectively. Despite the absence of antioxidants during the limonene recovery step with vacuum evaporation, the quantity of the oxidation products in the
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This work focused on the extraction of rice bran oil using supercritical carbon dioxide (SC-CO<sub>2</sub>) and compressed liquefied petroleum gas (LPG). For the supercritical extractions, the influence of pressure and temperature on the extraction yield was evaluated from 150 to 250 bar and from 40 to 80 °C, whereas for compressed LPG extractions were performed at 55 bar and 200
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Rice bran stabilization and rice bran oil extraction using ohmic heating. Lakkakula NR(1), Lima M, Walker T. Author information: (1)Department of Biological and Agricultural Engineering, Room 149, E.B. Doran Building, Louisiana State University AgCenter, Baton Rouge, LA 70803-4505, USA.
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Defatted rice bran has 15% (w/w) of protein content, which is considered a high nutritional value protein, although it is hard to extract pure protein compounds from grains, such as rice. These work aim is to optimize concentrated rice bran protein (CRBP) extraction from defatted rice bran.
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Extraction kinetics of rice bran oil and its minor bioactive compounds from rice bran by subcritical propane
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