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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of the extraction conditions on the yield and composition of rice bran oil extracted with ethanol-A response surface approach

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Oliveira, Ramon [1] ; Oliveira, Vinicius [1] ; Aracava, Keila Kazue [1] ; Rodrigues, Christianne Elisabete da Costa [1]
Total Authors: 4
[1] Univ Sao Paulo, Dept Food Engn ZEA FZEA, Separat Engn Lab LES, BR-13635900 Pirassununga, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: FOOD AND BIOPRODUCTS PROCESSING; v. 90, n. C1, p. 22-31, JAN 2012.
Web of Science Citations: 43

Rice bran oil was obtained from rice bran by solvent extraction using ethanol. The influence of process variables, solvent hydration (0-24% of water, on mass basis), temperature (60-90 degrees C), solvent-to-rice bran mass ratio (2.5:1 to 4.5:1) and stirrer speed (100-250 rpm) were analysed using the response surface methodology. The extraction yield was highly affected by the solvent water content, and it varied from 8.56 to 20.05 g of oil/100 g of fresh rice bran (or 42.7-99.9% of the total oil available) depending on the experimental conditions. It was observed that oryzanol and tocols behave in different ways during the extraction process. A larger amount of tocols is extracted from the solid matrix in relation to gamma-oryzanol. It was possible to obtain values from 123 to 271 mg of tocols/kg of fresh rice bran and 1527 to 4164 mg of oryzanol/kg of fresh rice bran, indicating that it is feasible to obtain enriched oil when this renewable solvent is used. No differences in the chemical composition of the extracted oils were observed when compared to the data cited in the literature. (C) 2011 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 06/00565-4 - Alcoholic extraction of vegetable oils: study of the solid-liquid equilibrium and the stage of the recovery of the solvent
Grantee:Christianne Elisabete da Costa Rodrigues
Support type: Regular Research Grants
FAPESP's process: 09/17855-3 - Solid-liquid equilibrium, kinetic of minor compounds extraction, and design of extractors in the vegetable oils extraction with ethanol
Grantee:Christianne Elisabete da Costa Rodrigues
Support type: Regular Research Grants