Publication: Reducing oil losses in alkali refining
Issued Date
2012-10-01
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ISSN
0003021X
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2-s2.0-84870061933
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Mahidol University
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SCOPUS
Bibliographic Citation
JAOCS, Journal of the American Oil Chemists' Society. Vol.89, No.10 (2012), 1913-1919
Suggested Citation
Salisa Chumsantea, Kornkanok Aryusuk, Supathra Lilitchan, Narumon Jeyashoke, Kanit Krisnangkura Reducing oil losses in alkali refining. JAOCS, Journal of the American Oil Chemists' Society. Vol.89, No.10 (2012), 1913-1919. doi:10.1007/s11746-012-2079-x Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/13905
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Title
Reducing oil losses in alkali refining
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Abstract
Neutralization is an important step in the chemical refining of edible oils. Free fatty acids (FFA) are generally removed in neutralization as sodium soaps but neutral oil is also entrapped in the emulsion and removed with the soap during centrifugation. Thus, alkali neutralization causes a major loss of neutral oil in the chemical refining of edible oils. The effects of demulsifiers (NaCl, KCl, Na 2 SO 4 and tannic acid) on reducing alkali refining losses of refined palm, soybean, and sunflower oils (used as model oils) incorporated with FFA from rice bran oil were investigated. Adding small amounts of demulsifiers to the alkali neutralization step significantly reduced neutral oil loss of these model oils. All demulsifiers except for tannic acid had similar effects on refining losses in all oil model systems. The optimum demulsifier content was 1.0 % (w/w of oil). © AOCS 2012.