Liha töötlemine
238 Chapter 12
pounds, may reduce by two log cycles the similar concentrations. To the most active
number of viable cells of E. coli O157 H7 smoke phenols belong: pyrogallol, 3-methyl-
after 3 days at 4°C. This result, however, was pyrocatechol, 4-methylpyrocatechol, pyro-
shown at a very high concentration of the catechol, butylhydroxytoluol, resorcinol,
liquid smoke, 8%, while the recommended hydroquinone, α-naphthol, 4-methylguaia-
percentage is 1.5% (Estrada-Muñoz et al. col, 4-vinylguaiacol, and 4-trans-propenyl-
1998). Several strains of thermotolerant syringol. The antioxidant properties of the
Staphylococcus epidermis do not survive phenolic fraction of wood smoke were
commercial hot smoking on inoculated already recognized about 50 years ago (Kurko
rainbow trout. In cold-smoked salmon, the 1963, 1966). Liquid smoke in a concentration