Method of refining episesamin
AssigneeSuntory Holdings Limited
InventorsYukihiro Aoshima, Masaaki Nakai
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Abstract
There is disclosed an episesamin refining method in which a mixture of sesamin components that contains sesamin, episesamin and the like is brought into contact with an aqueous medium to form a slurried mixture, and thereafter the solids are separated from the mixture or the slurried mixture is dissolved in a suitable aqueous medium under heating and, thereafter, the solution is slowly cooled to recrystallize, thereby yielding an episesamin-enriched composition with an increased relative episesamin content. By the present invention, episesamin can be conveniently and efficiently refined from a mixture of sesamin components that mainly comprises sesamin and episesamin.
Claims12
A method of refining episesamin comprising recrystallizing a mixture of sesamin components with an aqueous medium to yield an episesamin-enriched composition with an increased relative episesamin content, wherein the mixture of sesamin components has an episesamin content of at least 64 wt %.
A method of refining episesamin comprising the following steps:
- (1) dissolving a mixture of sesamin components in an oil or fat under heating;
- (2) selectively crystallizing episesamin by means of a recrystallization technique to yield a mixture of sesamin components having an episesamin content of at least 64 wt %;
- and
- (3) recrystallizing the mixture of sesamin components of the step (2) with an aqueous medium to yield an episesamin-enriched composition.
A method of refining episesamin comprising the following steps:
- (1) performing molecular distillation on a mixture containing sesamin components that has been refined from sesame oil, thereby giving a fraction in which the sesamin components are enriched;
- (2) dissolving the fraction in water, a water-soluble solvent or a mixture thereof, and then precipitating the sesamin components to yield a mixture of sesamin components having an episesamin content of at least 64 wt %;
- and
- (3) recrystallizing the mixture of sesamin components of the step (2) with an aqueous medium to yield an episesamin-enriched composition.
A method of refining episesamin comprising recrystallizing a mixture of sesamin components with an aqueous medium in the absence of an alkali to yield an episesamin-enriched composition with an increased relative episesamin content, wherein the mixture of sesamin components has an episesamin content of at least 64 wt %.
Dependencies are inferred from the claim text.