抄録
When riboflavin tetrabutyrate dissolved in oil or fat was preserved for 6 months in dark place, 93-87% of it remained unchanged. In case riboflavin tetrabutyrate was dissolved in highly oxidized oil or fat, its decomposition became remarkable. Therefore, to enrich oil or fat by the addition of riboflavin tetrabutyrate, it is recommended to adopt freshly prepared oil or fat.
