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Hydrogenation of low erucic acid rapeseed oil (Zephyr) under selective conditions
Author(s) -
ELSHATTORY Y.,
DEMAN L.,
DEMAN J. M.
Publication year - 1981
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.1981.tb01846.x
Subject(s) - erucic acid , rapeseed , chemistry , food science
Summary Low erucic acid rapeseed oil (Zephyr) was hydrogenated under selective conditions, 200°C, 48 kPa pressure, with 0.2% of five different commercial nickel catalysts and the standard catalyst of the American Oil Chemists’ Society. From the change in iodine value, the relative activities of the catalysts were calculated. The trans‐isomer levels were determined by infra‐red spectroscopy and the specific isomerization index calculated. Catalysts with the lowest activity resulted in the highest level of trans‐isomers. From the change in fatty composition, the selectivity ratio was calculated. Physical properties were measured by determination of dropping point and solid fat content. The commercial catalysts differed widely in their action on the hydrogenation of Zephyr oil.