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Research Highlights: Lipid Technology 8/2008

✍ Scribed by Frank D. Gunstone

Publisher: Wiley (John Wiley & Sons)
Year: 2008
Tongue: English
Weight: 383 KB
Volume: 20
Category: Article
ISSN: 0956-666X
DOI: 10.1002/lite.200800047

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✦ Synopsis

Regeneration of thermally polymerised frying oils with adsorbents

Thermally polymerised palm and cottonseed frying oils were treated with a range of adsorbents (charcoal, alumina, aluminium hydroxide, clay, celite, carbon, fry powder, britesorb, and magnesol) alone and in various mixtures by percolating hot oil (1508C) through a column of adsorbent over 15 minutes. The properties examined before and after this treatment were free acid, total polar material, anisidine value, conjugated diene, viscosity, and colour. Each adsorbent had some effect but better results were obtained with binary mixtures of adsorbent and the best results with a quaternary mixture of alumina, silica, magnesol, and clay. This treatment produced a marked reduction in all the parameters measured.

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