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US 5,959,129 AGranted
Fractionation of triglyceride oils
AssigneeUnilever Patent Holdings B.V.
InventorsPetrus Henricus J van Dam, Wim Hogervorst, Frans Kamp
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Abstract
Fractionation of lauric oils which contain a crystallization modifying substance consisting of a sucrose ester containing at least 40 wt. % laurate. With palmkernel oil fractionation a separation efficiency of more than 70% can be attained.
Claims8
A dry fractionation process for fractionating a lauric oil with improved separation of solid fatty material from partially crystallised lauric oil, which comprises the steps:
- a. heating the oil until no longer a substantial amount of solid triglyceride is present in the oil,
- b. cooling and crystallising the triglyceride oil resulting in a solid stearin phase besides a liquid olein phase and
- c. recovering the stearin phase by separating it from the olein phase,
- where before crystallization starts a crystallization modifying substance is added to said triglyercide oil or to a solution of said triglyceride oil in an inert solvent, characterized in that the crystallization modifying substance is a sucrose laurate having an average esterification degree of 50-100% and a lauric acid content which is 40-100 wt. % of the total fatty acid content.
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Dependencies are inferred from the claim text.