Taste imparting additives for beverages and foodstuffs - are pyrazine derivs. with alkyl substituent or condensed cyclopentane ring

摘要

Roast or baked taste and aroma are imparted to beverages or foodstuffs, using 2,3-dimethyl-5-ethylpyrazine (I), 5H-6,7-dihydrocyclopenta-(b)-pyrazine (II) or its 2-methyl (III) or 5-methyl (IV) derivs. and/or 2-acetyl-3-methylpyrazine (V). 2-Acetyl-3-hydroxypyridine is a new cpd. This is a division of 544,509. for imparting aroma to raw materials for the beverage industry, esp. cocoa or coffee.