Optimal selectivity of ´-oryzanol and total phenolic compounds from rice bran using supercritical carbon dioxide fractionation technique

Hung C. C., . and Weng Y. M., . and Yu Z. R., . and Wang B. J., . Optimal selectivity of ´-oryzanol and total phenolic compounds from rice bran using supercritical carbon dioxide fractionation technique. pp. 639-647. ISSN 2231-7546

The objective of the present work was to establish the optimal parameters for the selectivity of bioactive components; -oryzanol and total phenolic compounds from ethanolic extract of rice bran using a continuous supercritical carbon dioxide (SC-CO‚‚) fluid fractionation technique. The ethanolic extracts of rice bran were separated into insoluble residue (R) and soluble fraction (F) according to an orthogonal design: temperatures (40 45 and 50C) pressures (20 25 and 30 MPa) SC-CO‚‚ flow rate (2 4 and 6 mL/min) and feed flow rate (1 2 and 3 mL/min). Our data found that -oryzanol and total phenolic compounds were mainly partitioned in F and R respectively. The optimal selectivity of -oryzanol and total phenolic compounds was obtained with the SC-CO‚‚ operation conditions of 50C 30 MPa 6 mL/min SC-CO‚‚ flow rate and 1 mL/min feed flow rate. Concurrently a high regression coefficient via linear structural model analysis indicated that the response equation fitted well with the experimental data.

Full text available from: Official URL: http://www.ifrj.upm.edu.my/26%20(02)%202019/(30).p...

Abstract

The objective of the present work was to establish the optimal parameters for the selectivity of bioactive components; -oryzanol and total phenolic compounds from ethanolic extract of rice bran using a continuous supercritical carbon dioxide (SC-CO‚‚) fluid fractionation technique. The ethanolic extracts of rice bran were separated into insoluble residue (R) and soluble fraction (F) according to an orthogonal design: temperatures (40 45 and 50C) pressures (20 25 and 30 MPa) SC-CO‚‚ flow rate (2 4 and 6 mL/min) and feed flow rate (1 2 and 3 mL/min). Our data found that -oryzanol and total phenolic compounds were mainly partitioned in F and R respectively. The optimal selectivity of -oryzanol and total phenolic compounds was obtained with the SC-CO‚‚ operation conditions of 50C 30 MPa 6 mL/min SC-CO‚‚ flow rate and 1 mL/min feed flow rate. Concurrently a high regression coefficient via linear structural model analysis indicated that the response equation fitted well with the experimental data.

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Item Type:	Article
AGROVOC Term:	Oryza sativa
AGROVOC Term:	Rice
AGROVOC Term:	Bran
AGROVOC Term:	Antioxidants
AGROVOC Term:	Supercritical CO2 extraction
AGROVOC Term:	Ethanol
AGROVOC Term:	Extracts
AGROVOC Term:	HPLC
AGROVOC Term:	Flow rate
AGROVOC Term:	Fractionation
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8089

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