as preservatives in concentration 0.5 and 1.5 g/L, respectively. The initial pH was 6.2
and the aw was 0.87 for the presence of glycerol and fructose. The sample units showed sediments and extensive gas production. All the ingredients, i.e. dried herbs, fructose syrup and the hydroalcoholic extract of black cherry bark were analyzed to determine
the presence of specific contaminants.