| 摘要 |
1,236,665. Flavourings; tobacco blends. R. FIRMENICH, C. FIRMENICH, R. E. FIRMENICH and F. H. FIRMENICH [trading as FIRMENICH & CIE]. 18 Oct., 1968 [18 Oct., 1967; 12 Oct., 1968], No. 49529/68. Headings A2B and A2C. [Also in Division C2] Foods, animal feeds, beverages, pharmaceuticals, and tobacco are flavoured by incorporating therein a compound selected from 2-hydroxy-4-methyl-2-buten-4, 1-olide or 2-hydroxy-4 methyl-4 carboxy-2-buten-4, 1-olide or 2-hydroxy-3-methyl-4-ethyl-2- buten-4, 1-olide or 2-hydroxy-3-methyl-4- ethyl-4-carboxy-2-buten-4, 1-olide, if desired together with other flavourings. The above 4-carboxy compounds form the preceding olide on heating. Examples relate to the preparation of caramel and maple flavours and to imparting a maple flavour to a tobacco blend. |
