Carotenoids from red palm methyl esters by nanofiltration |
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Authors: | D Darnoko Munir Cheryan |
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Affiliation: | (1) Indonesian Oil Palm Research Institute, 20001 Medan, Indonesia;(2) Department of Food Science and Human Nutrition, Agricultural Bioprocess Laboratory, University of Illinois, 61801 Urbana, Illinois |
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Abstract: | Palm oil contains high concentrations of carotenoids and tocopherols that can be recovered by first converting them to methyl
esters and then applying membrane technology to separate the carotenoids from the methyl esters. Several solvent-stable nanofiltration
membranes were investigated for this application. Flux with a model red palm methyl ester solution ranged from 0.5 to 10 Lm−2h−1, and rejection of β-carotene was 60–80% at a transmembrane pressure of 2.76 MPa and 40°C. A multistage membrane process was
designed for continuous production of palm carotene concentrate and decolorized methyl esters. With a feed rate of 10 tons
per hour of red palm methyl esters containing 0.5 gL−1 β-carotene, the process could produce 3611 L·h−1 of carotene concentrate containing 1.19 gL−1 carotene and 7500 Lh−1 of decolorized methyl esters containing less than 0.1 gL−1 β-carotene. The economics of this process is promising. |
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Keywords: | Carotene membrane methyl esters nanofiltration palm oil |
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