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Smoke odour components and carcinogenic hydrocarbons of wood vinegar and wood tar

100%

Kishimoto S., Hirano K.

Acta Alimentaria Polonica

1977

tom 03

nr 3

Smoke odour components were studied in pyroligneous liquors and tars obtained from wood, lignin, and cellulose, as well as in commercial samples of smoke liquids. The presence of carcinogenic hydrocarbons in said liquids was examined too. It was found that the weak acid fraction of wood pyroligenous liquors had a pleasant smokey odour and consisted mainly of low molecular weight phenols formed by the pyrolysis of lignin. In contrary, the neutral fraction of said liquors had a weak smokey odour. The odour of the weak acid fraction from cellulose pyroligneous liquors obtained at 320-400°C has been assessed as a "sweet" one. Wood tar distillates obtained within the 65-94°C boiling range at 80 mm Hg possessed a pleasant odour-in particular the fraction distilling at 84-90°C (80 mm Hg) obtained good scores. Carcinogenic hydrocarbons were not detected in distillates from wood pyroligneous liquors and in the 65-94°C fractions of wood tar distillates.

Ograniczanie wyników

1 Acta Alimentaria Polonica

1 Hirano K.

1 Kishimoto S.

1 1977

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Smoke odour components and carcinogenic hydrocarbons of wood vinegar and wood tar