Thermal gradient deacidification of crude rice bran oil utilizing supercritical carbon dioxide

被引：55

作者：

Dunford, NT ^{[1
]}

King, JW ^{[1
]}

机构：

[1] USDA ARS, Natl Ctr Agr Utilizat Res, Peoria, IL 61604 USA

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 2001年 / 78卷 / 02期

关键词：

deacidification; phytosterols; rice bran oil; supercritical fluid fractionation; temperature gradient;

D O I：

10.1007/s11746-001-0231-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 [应用化学];

摘要：

The effect of isothermal and temperature gradient operation of a supercritical fluid fractionation column on the composition of rice bran oil (RBO) fractions has been studied. Application of a temperature gradient along the column was found to be beneficial in reducing the triacylglycerol (TAG) lost in the extract fraction. Utilization of higher temperature in the stripping section improved free fatty acid (FFA) removal from crude RBO. FFA acid content of the extract increased, and TAG content decreased with respect to time during the fractionation runs. Increasing the CO2 flow rate from 1.2 to 2 L/min did not affect the extract composition significantly. By using the above approach, it is possible to obtain RBO fractions with similar total sterol ester content [similar to 23 high-performance liquid chromatographic area (HPLC) %, ferulic plus fatty acid esters] to that of the commercially available sterol ester-enriched (ca. 21 HPLC area % fatty acid esters) margarines/spreads.

引用

页码：121 / 125

页数：5

共 15 条

[1]

LAMPANTE OLIVE OIL REFINING WITH SUPERCRITICAL CARBON-DIOXIDE [J].

BONDIOLI, P ;

MARIANI, C ;

LANZANI, A ;

FEDELI, E ;

MOSSA, A ;

MULLER, A .

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 1992, 69 (05) :477-480

[2]

BRADY JA, 1999, INFORM, V10, P832

[3]

DEACIDIFICATION OF OLIVE OILS BY SUPERCRITICAL CARBON-DIOXIDE [J].

BRUNETTI, L ;

DAGHETTA, A ;

FEDELI, E ;

KIKIC, I ;

ZANDERIGHI, L .

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 1989, 66 (02) :209-217

[4]

CLIFFORD T, 1989, FUNDAMENTALS SUPERCR, P130

[5]

Deacidification of high-acid rice bran oil by reesterification with monoglyceride [J].

De, BK ;

Bhattacharyya, DK .

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 1999, 76 (10) :1243-1246

[6]

Phytosterol enrichment of rice bran oil by a supercritical carbon dioxide fractionation technique [J].

Dunford, NT ;

King, JW .

JOURNAL OF FOOD SCIENCE, 2000, 65 (08) :1395-1399

[7]

Deacidifying rice bran oil by solvent extraction and membrane technology [J].

Kale, V ;

Katikaneni, SPR ;

Cheryan, M .

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, 1999, 76 (06) :723-727

[8]

Thermal gradient fractionation of glyceride mixtures under super-critical fluid conditions [J].

King, JW ;

SahleDemessie, E ;

Temelli, F ;

Teel, JA .

JOURNAL OF SUPERCRITICAL FLUIDS, 1997, 10 (02) :127-137

[9]

Extraction and quantitative analysis of oil from commercial corn fiber [J].

Moreau, RA ;

Powell, MJ ;

Hicks, KB .

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 1996, 44 (08) :2149-2154

[10]

RICE BRAN OIL LOWERS SERUM TOTAL AND LOW-DENSITY-LIPOPROTEIN CHOLESTEROL AND APO-B LEVELS IN NONHUMAN-PRIMATES [J].

NICOLOSI, RJ ;

AUSMAN, LM ;

HEGSTED, DM .

ATHEROSCLEROSIS, 1991, 88 (2-3) :133-142

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