HYDROXYPHENYLALKADIONES AND THEIR USE FOR MASKING BITTER TASTE AND/OR FOR INTENSIFYING SWEET TASTE

摘要

The use of a hydroxyphenylalkadione derivative of the formula (I) wherein, for X, a and Y: X is a -CH₂-, -NH- or -O- group, Y is a -CH₂- group and a is a single bond or X and Y are in each case a -CH- group and a is a double bond in the Z or E configuration, wherein, for R¹ , R² and R³ R¹ denotes hydrogen, an aliphatic radical having 1 to 4 C atoms or a -O-R⁵, -S-R⁵ or -NR⁵R⁶ group and R² and R³ independently of one another denote hydrogen or an alkyl having 1, 2, 3, 4 or 5 C atoms which is optionally substituted by one or more oxo groups or R⁷-O- groups or R¹ and R² together form an aliphatic ring which contains a total of 4 to 10 carbon atoms and 0 or 1 oxygen atom, wherein the ring constituent represented by R¹ and R² is optionally substituted by one or more oxo groups and/or R⁷-O- groups and/or aliphatic radicals having 1 to 4 C atoms and R³ denotes hydrogen or an alkyl having 1, 2, 3, 4 or 5 C atoms which is optionally substituted by one or more oxo groups or R⁷-O- groups or R² and R³ together form an aliphatic ring which contains a total of 4 to 10 carbon atoms and 0 or 1 oxygen atom, wherein the ring constituent represented by R² and R3 is optionally substituted by one or more oxo groups and/or R⁷-O- groups and/or aliphatic radicals having 1 to 4 C atoms and R¹ denotes hydrogen, an aliphatic radical having 1 to 4 C atoms or a -O-R⁵, -S-R⁵ or -NR⁵R⁶ group, wherein, for R⁴ and R: R⁴ and R independently of one another denote hydrogen, methyl or ethyl and wherein, for R⁵, R⁶ and R⁷: R⁵ R⁶ and R⁷ independently of one another denote hydrogen or an aliphatic radical having 1 to 4 C atoms, a salt of such a hydroxyphenylalkadione of the formula (I), a mixture comprising or consisting of two or more different hydroxy- phenylalkadiones of the formula (I), wherein X, a, Y, R, R¹, R², R³, R⁴, R⁵, R⁶ and R⁷ in each case have the meaning given above, a mixture comprising or consisting of salts of two or more different hydroxyphenylalkadiones of the formula (I), wherein X, a, Y, R, R¹, R², R³, R⁴, R⁵, R⁶ and R⁷ in each case have the meaning given above, or a mixture comprising or consisting of a hydroxyphenylalkadione of the formula (I) or two or more different hydroxyphenylalkadiones of the formula (I), wherein X, a, Y, R, R¹, R², R³, R⁴, R⁵, R⁶ and R⁷ in each case have the meaning given above, and a salt of a hydroxyphenylalkadione of the formula (I) or two or more salts of different hydroxyphenylalkadiones of the formula (I), wherein X, a, Y, R, R¹, R², R³, R⁴, R⁵, R⁶ and R⁷ in each case have the meaning given above, for modifying, masking or reducing the unpleasant flavour impression of an unpleasantly tasting substance and/or for intensifying the sweet taste of a sweet-tasting substance and/or the sweet odour impression of an aroma substance which causes a sweet odour impression, as well as formulations and processes including a hydroxyphenylalkadione of the formula (I), are described.