A COMPARISON OF THE FLOWER VOLATILES FROM HAWTHORN AND 4 RASPBERRY CULTIVARS

Flower volatiles from four raspberry cultivars and wild hawthorn were entrained on the porous polymers Haysep Q and Tenax TA. These were ana lysed by thermal desorption-gas chromatography-mass spectrometry. The major classes of compound identified included aliphatic and aromatic a ldehydes, ketones, alcohols and esters, monoterpenes, sesquiterpenes, and a number of unusual nitrogen compounds. The volatile profiles of t he flowers of the four raspberry cultivars exhibited only minor differ ences. Volatiles from the flowers of hawthorn, although similar in man y respects, contained proportionately lower levels of terpenoids, but elevated levels of benzaldehyde, 3-pyridine carboxaldehyde, 4-methoxyb enzaldehyde and 4-methoxybenzoic acid methyl ester.