3.2. Content of anthocyanins
As shown in Table 2, the content of Cy-3-Glc, Pg-3-Glc and Pg-3-Rut in the control sample (CS) was 7.81 (8.4%), 80.79 (87.2%) and 4.03 (4.4%) mg/100 g, respectively. Odriozola-Serrano et al. (2008) reported a similar ratio of these monomers in strawberry juices, ca. 8:88:4. Cao et al. (2011) also found these compounds to be the most abundant anthocyanins in strawberries, their concentration being as follows: Pg-3-Glc 23.1 mg/100 g, Pg-3-Rut 5.8 mg/100 g and Cy-3-Glc 3.7 mg/100 g, which accounted for 71.3%, 17.9% and 11.4% of total monomeric anthocyanins. The study showed a statistically significant (p-value≤ 0.05) effect of the preservation temperature on the contents of all investigated anthocyanin monomers (Table 2); however, the treatment pressure and processing timehad no significant effect on their levels compared to CS. The content of anthocyanin monomers in TP and HPP treated samples was similar to the CS and