Provided are new alkenyl carbonothioates of formula (I), their manufacture and their use as flavours and fragrances. Also provided are flavour and fragrance compositions and edible products, in particular coffee products, comprising the new alkenyl carbonothioates.

##STR00001##

This disclosure relates to flavour modification and to compounds of formula (I) or edible salts thereof,

##STR00001## wherein R.sup.1 is selected from C.sub.6-C.sub.20 alkyl, and C.sub.9-C.sub.25 alkenyl, and i) R.sup.3 and R.sup.4 are hydrogen and R.sup.2 the residue of a proteinogenic amino acid; ii) R.sup.2 and R.sup.3 are methyl and R.sup.4 is hydrogen; or R.sup.4 is hydrogen and R.sup.2 and R.sup.3 form together with the carbon atom to which they are attached cyclopropyl; iii) R.sup.2 is hydrogen, and R.sup.3 and R.sup.4 together are —CH.sub.2—CH.sub.2—CH.sub.2—

useful in modifying flavours.

A method to confer, enhance, improve or modify the flavor properties of a flavoring composition or flavored article by adding to the composition or article the compound 3-mercaptoheptyl acetate or an optically active enantiomer thereof in an amount effective to provide a flavor base having top notes of the citrus-grapefruit, teas and/or peach type and/or red fruit. The compound is typically added to provide an amount of from 0.0001 to 500 ppm in the flavoring composition or flavored article. Also, the resultant flavored composition or flavored article.

A flavour composition comprising a compound of formula (I) ##STR00001## and edible salts thereof, wherein R.sub.1 is an alkyl residue containing 6 to 20 carbon atoms, or an alkene residue containing from 9 to 25 carbon atoms with 1 to 6 double bonds, R.sub.1 together with the carbonyl group to which it is attached is a residue of a carboxylic acid.

This disclosure relates to flavour modification and to compounds of formula (I) ##STR00001## wherein R.sup.1 is selected from C.sub.6-C.sub.20 alkyl, and C.sub.9-C.sub.25 alkenyl, R.sup.5 is C.sub.1-C.sub.3 alkyl, and a) n is 1; and i) R.sup.3 and R.sup.4 are hydrogen and R.sup.2 is the residue of a proteinogenic amino acid; ii) R.sup.2 and R.sup.3 are methyl and R.sup.4 is hydrogen; or R.sup.4 is hydrogen and R.sup.2 and R.sup.3 form together with the carbon atom to which they are attached cyclopropyl; iii) R.sup.2 is hydrogen, and R.sup.3 and R.sup.4 together are CH.sub.2CH.sub.2CH.sub.2; b) n is 2 or 3 and R.sup.2, R.sup.3 and R.sup.4 are hydrogen, useful in modifying flavours.

An alkanethioic acid derivative capable of imparting a characteristic aroma or flavor to fragrances and cosmetics, and foods and beverages; and a perfume composition comprising the alkanethioic acid derivative as an active ingredient. S-alkyl 5-[(1-alkoxy)ethoxy]alkanethioate represented by formula (1), and a perfume composition comprising the S-alkyl 5-[(1-alkoxy)ethoxy]alkanethioate represented by formula (1) as an active ingredient. In the formula (1), R.sub.1 represents an alkyl group having 1 to 9 carbon atoms, R2 represents an alkyl group having 2 to 4 carbon atoms, and R3 represents a methyl group or an ethyl group.

This disclosure relates to flavour modification and to compounds of formula (I) ##STR00001## wherein R.sup.1 is selected from C.sub.6-C.sub.20 alkyl, and C.sub.9-C.sub.25 alkenyl, and i) R.sup.3 and R.sup.4 are hydrogen and R.sup.2 the residue of a proteinogenic amino acid; ii) R.sup.2 and R.sup.3 are methyl and R.sup.4 is hydrogen; or R.sup.4 is hydrogen and R.sup.2 and R.sup.3 form together with the carbon atom to which they are attached cyclopropyl; iii) R.sup.2 is hydrogen, and R.sup.3 and R.sup.4 together are CH.sub.2CH.sub.2CH.sub.2,
useful in modifying flavours.

A coffee beverage having, regardless of a liquid temperature of the beverage, reduced bitterness and little aftertaste is provided.

The content of guaiacol and the content of furfuryl methyl sulfide in the beverage are adjusted to specific ranges.

This disclosure relates to flavour modification and to compounds of formula (I) ##STR00001## wherein X is (CH.sub.2).sub.m wherein m is an integer from 7 to 10, or X is C.sub.7-C.sub.10 alkenyl, and i) n is 1, R.sup.1 and R.sup.3 are hydrogen, and R.sup.2 is the residue of a proteinogenic amino acid; ii) n is 1, R.sup.2 is hydrogen, and R.sup.1 and R.sup.3 together are CH.sub.2CH.sub.2CH.sub.2; or iii) n is 2 or 3 and R.sup.1, R.sup.2 and R.sup.3 are hydrogen,
useful in modifying flavours.

An edible composition, an aerosol composition, a flavor composition, a fragrance composition, or an inhalable composition includes an aroma compound such as 3-mercaptohexyl acetate (3MHA), 3-mercaptohexyl butyrate (3MHB), 3-mercaptohexanol (3MH), 3-mercaptohexyl hexanoate (3MHH), or a combination of any two or more thereof, one or more terpenes, and optionally one or more organosulfur compounds.