Method of preparing labelled vegetable oil
AssigneeThe Green Cross Corporation
InventorsHiroyuki Okamoto, Yoshio Tsuda, Kazumasa Yokoyama
Life of this patent
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Abstract
A method for preparing a vegetable oil labelled with .sup.14 C or .sup.3 H, characterized by transesterifying a vegetable oil with at least one of the chemically same fatty acids labelled with .sup.14 C or .sup.3 H as those constituting said vegetable oil. The resulting labelled vegetable oil can be used in measuring biological metabolic activity of man or an animal or as a biological tracer reagent.
Claims10
A method for preparing a labelled oil comprising transesterifying a vegetable oil in the presence of an inert gas at a reaction temperature of 260.degree. to 320.degree. C. for 30 to 60 minutes with at least one of the chemically-same fatty acids labelled with .sup.14 C or .sup.3 H as those constituting said vegetable oil, and recovering the labelled oil which is formed, the molar ratio of the labelled fatty acid to the vegetable oil being from 1:100 to 1:10,000.
Dependencies are inferred from the claim text.