Abstract: A liquid smoke product which contains no detectable amount of 3,4-benzopyrene (also known as benzo(a)pyrene) consists essentially of propylene glycol together with those components of the heavy, essentially water insoluble material that settle out of an aqueous condensation of wood smoke (hereinafter called "wood tar") which codistill at or below the boiling point of propylene glycol and most of which are soluble in propylene glycol.A method of making the above product by mixing about three parts by weight of wood tar with one part by weight propylene glycol to form a feed material, heating said feed material to about 280.degree. F. to 290.degree. F., reducing the pressure to about 100 mm.
Type:
Grant
Filed:
August 24, 1976
Date of Patent:
May 15, 1979
Assignee:
Stange Co.
Inventors:
Balys Dainius, Charles Dame, James O'Hara