Preparation of14C‐labeled fatty and anacardic acids fromGinkgo biloba

Acetate labeled with14C was infused into shoots of Ginkgo. Up to 16% of the radioactivity was incorporated into lipids. Most of it was found in the leaves and stems, but after 9 days, the lipids of roots also contained an appreciable amount of radioactivity. Radioactive palmitic, linoleic and other common acids were isolated as methyl esters; 5,11,14–20∶3 and esters of similar type were isolated pure or together with their isomers of normal structure; anacardic acids were separated as such from the fatty esters.