ISOLATION AND IDENTIFICATION OF 3,3′,5,5′‐TETRA‐BIS‐(TERTBUTYL)‐STILBENEQUINONE FROM EDIBLE OIL WITH ADDED BHT

摘要

ABSTRACTThe formation of derivatives of 2,6‐di‐tert‐butyl‐4‐methylphenol (BHT) used as an antioxidant in edible oil was investigated. Commercial oil containing BHT was heated at 190°C for 262 hr and extracted with acetonitrile. A yellow substance was isolated at the level of 7 ppb, purified by multiple thin‐layer chromatography, and identified as 3,3′,5,5′‐tetra‐bis‐(tert‐butyl)‐stilbenequinone. No published data were found on the presence of this subs