STUDIES ON VITAMIN-A IN SOLUTION. PART IV. ESTIMATION OF ANTIOXIDANTS

A modification of the Emmerie and Engel method for the determination of tocopherols is described far the assay of phenolic antioxidants like propyl gallate, ethyl gallate and monomethyl ether of hydroquinone when present in arachis oil or ethyl oleate. A correction is needed for the interference of colour formation due to the substrates.