Utilization of Tenax GC Column Trapping Technique for Gas-chromatographic Analysis of Headspace Volatiles from Satsuma Mandarin Juice(Citrus unshiu Marc.)

Abstract

Utilization of a Tenax GC(a kind of porous polymer beads)column trapping technique was investigated for gas-chromatographic analysis of headspace volatiles from Satsuma mandarin juice. The volatiles of the juice were absorbed and concentrated on the Tenax GC column. The volatiles released from the column by heating(200°C)were analized by gas-chromatography. The application of the Tenax GC column made it possible to reduce time for trapping and concentration of the volatiles, with an advantage of an increase of detectable components and clear separation of the peaks on gas-chromatogram. However, Tenax GC had some unfavorable properties that volatiles in air were absorbed easily, on the other hand, some components such as ethanol were not absorbed at all.