Riboflavin and Its Natural Derivatives in the Fat-Globule Membrane

Abstract
A fluorometric procedure was used to study the nature of a greenish-yellow substance derived from the fat-globule membrane of cow''s milk. The results showed that > 90% of the fluorescent material originated from flavin-adenine di-nucleotide. A residual fluorescence was located in the supernatant of the membrane preparation and appeared to eminate from free riboflavin.