Method of obtaining a smoking agent

Details Method of obtaining a smoking agent Method of obtaining a smoking agent

A - Human Necessities

23

L

99/139.01

A23L 1/232 (2006.01)

Patent

CA 1056645

A B S T R A C T The present invention concerns a process of preparing a food smoke additive which comprises the steps of, destructively distilling cellulose and/or lignin material to form tar or smoke condensate, removing organic nit- ric bases from the condensate by means of an aqueous solution of a mineral acid or as a compound formed by reaction with an acid which is indecomposable at a temperature up to 250°C, distilling remaining tar or smoke condensate in two stages, a first said stage comprising distillation at a pressure of be- tween 20 - 30 mm Hg with the addition of zinc, aluminium or iron dust and col- lecting the fraction boiling below 100 - 110°C, and a second said stage com- prising distillation of said 100 - 110°C boiling fraction at a pressure not exceeding 20 mm Hg with the addition of polyhydric alcohol and collecting the fraction containing compounds-exhibiting a boiling point of up to 250°C at 20 mm Hg, heating the food smoke additive plus polyhydric alcohol thus col- lected to a temperature of 50° - 90°C to separate out an alcohol layer which is removed from the food smoke additive layer, said steps of removing organic nitric bases and said two-stage distillation of remaining tar or smoke con- densate being interchangeable.

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