Method of producing from wood tar a liquid smoke product for use

Details Method of producing from wood tar a liquid smoke product for use Method of producing from wood tar a liquid smoke product for use

1976-08-24

1979-05-15

Jones, Raymond N.

Food or edible material: processes, compositions, and products

Products per se, or processes of preparing or treating...

Flavor or flavor adjunct, acidulant or condiment

426429, 426492, A23L 1232

Patent

active

041548663

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. of mercury to cause codistillation of the desired components with the propylene glycol and thereby form a liquid fraction and a vapor fraction, entirely separating the vapor fraction from the liquid fraction, and condensing the vapor fraction which is then treated with a small percentage of activated carbon to assure that the amount of 3,4-benzopyrene is below 0.5 parts per billion, by weight.

REFERENCES:
patent: 1753358 (1930-04-01), Wright
patent: 2095857 (1937-10-01), Carter et al.
patent: 2400466 (1946-05-01), Reiter et al.
patent: 3106473 (1963-10-01), Hollenbeck
patent: 3445248 (1969-05-01), Miler et al.
patent: 3480446 (1969-11-01), Hollenbeck
patent: 3663237 (1972-05-01), Moller
patent: 3806609 (1974-04-01), Goblik et al.
patent: 3873741 (1975-03-01), Melcer et al.

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