Quality of Goat’s Milk Exposed Ultraviolet and High Pulsed Electric Field
2020
The study of microbial inactivation using HPEF method under long treatment’s time at
static system had significant effect (P<0.01) towards physicochemical properties. In order to increase
inactivation rate and to maintain its physicochemical properties, HPEF method was combined with
UV which has been proved enable to decrease the total microbe population. The research was objected
to obtain information related the frequency treatments (10, 15 and 20 Hz) under UV-HPEF
combination toward physicochemical properties and microbiological properties. The statistical
analysis was conducted using Complete Randomized Design. The result showed that insignificant
difference was occurred among frequency treatments at 10, 15 and 20 Hz. The decreased of total
microbe was 30.00; 89.49 and 85.67%, respectively. Inactivation rate at each frequency was 0.15;
0.98 and 0.84 log cycle or 3.49; 22.04 and 19.01 log cfu/ml/hour, respectively; D value was 6.46; 1.02
and 1.19 hour, respectively; while k value was 0.36; 2.25 and 1.94 hour
-1
, respectively. The best
treatment was obtained by HPEF-UV series treatment at 15 Hz.
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