Proceedings Volume 2010 (format .pdf) - SimpBTH

Table 3.2. Correlation between microbial loads of groups of microorganisms and PEFtreatment durationType of microorganismYeastLactic acid bacteriaAcetic bacteriaStatistical characteristicsThe form of the regression line y = 17,181x + 35,951Regression coefficient 0,9338The form of the regression line y = 20,471x + 37,198Regression coefficient 0,9115The form of the regresion line y = 21,382x + 35,417Regression coefficient 0,8829Inactivation rate was greater in PEF + UV treatment for both lactic acidbacteria and for the acetic bacteria. The yeasts were more resistant to treatment,registering a 96% rate of mortality in both treatment conditions (Table 3.3, fig. 8).Table 3.3. The influence of UV + PEF treatment on the viability of microorganismsType of microorganismUV 5 min PEF 2 min UV+PEF ( 5min + 2min)YeastsLactic acidbacteriaAcetic bacteriaViability (%) 48,5 22 4,5Lethality (%) 51,5 78 95,5Viability (%) 39 9,1 2,8Lethality (%) 61 90,9 97,2Viability (%) 37,58 6,05 2,15Lethality (%) 62,4 93,9 97,9Fig. 8. The influence of UV + PEF treatment on the viability of microorganisms312