THE THERMOSTABILITY OF PAPERBOARD FOOD PACKING

Three different methods of isolation of volatiles released by heating of the paperboard were compared. The volatiles produced by 30 - 60 min of heating at 150-degrees-C were isolated by: 1) extraction with diet hyl ether 2) distillation with trapping in cooled diethyl ether and 3) adsorption on TENAX GC. The isolated volatiles were analyzed by gas c hromatography coupled with the mass spectroscopy detection. The TENAX adsorption seems to give the best results, better than the other metho ds, by use of which not only volatiles were isolated and some part of volatiles was lost also by subsequent reactions of those.