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A study on the influence of fucosterol on thermal polymerisation of purified high oleic sunflower triacylglycerols

โœ Scribed by Lampi, Anna-Maija; Dimberg, Lena H; Kamal-Eldin, Afaf

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
167 KB
Volume
79
Category
Article
ISSN
0022-5142

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โœฆ Synopsis

D5-Avenasterol, an ethylidene side-chain phytosterol, was described as an antipolymerisation agent for thermooxidised oils. This paper investigates the potential of its commercially available geometrical isomer, fucosterol, as an antipolymerisation agent for high oleic sunรฝower oil (HOSO). Puriรผed triacylglycerols were prepared from HOSO and incubated in an oven, at 180ร„C, with or without fucosterol, sitosterol and stigmasterol. Analysis of polymers and dimers (by high-performance size exclusion chromatography) showed that fucosterol did not aรพ ect the rate of polymerisation of puriรผed HOSO triacylglycerols in our model. Comparison with a-tocopherol, showed that this tocol inhibited the polymerisation of the oil while fucosterol did not.

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