摘要:
Novel lower 2-alkylidene-2-alkenals having the formula: ##SPC1##Wherein one of R.sub.1 and R.sub.2 is hydrogen and the other is methyl, and one of R.sub.3 and R.sub.4 is hydrogen and the other is an alkyl group having two or four carbon atoms, such alkenals being useful in altering organoleptic properties of consumable materials.
摘要:
Methods for altering, modifying or enhancing the organoleptic properties of foodstuffs and perfumes comprising incorporating with such materials a small but effective amount (from 0.02 ppm up to about 150 ppm) of at least one 2-alkylidene-cis-3-alkenal or at least one 2-alkylidene-trans-3-alkenal or a mixture having at last one 2-alkylidene-trans-3-alkenal and one 2-alkylidene-cis-3-alkenal represented by the formula: ##SPC1##Or di-lower alkyl acetal thereof wherein one of R.sub.1 and R.sub.2 is hydrogen and the other is lower alkyl; and one of R.sub.3 and R.sub.4 is hydrogen and the other is lower alkyl; together with compositions containing the said 2-alkylidene-3-alkenals or acetals thereof for use in altering such organoleptic properties.