The U.S. Food and Drug Administration (FDA) criterion of a 5 log reduction of chosen pathogen in fruit juices can be achieved by UV-C irradiation (FDA, 2000). The UV-C light, with a peak emission at the wavelength of 254 nm exhibits germicidal effect on bacteria, yeasts, moulds, and viruses. The absorption of UV-C ray prevents these microorganisms from reproducing, and eventually may cause cell death. Moreover, advantages of UV-C treatment include cost effective, simple, and low main- tenance (Guerrero-Beltrán and Barbosa-Cánovas, 2004).
The U.S. Food and Drug Administration (FDA) criterion of a 5 log reduction of chosen pathogen in fruit juices can be achieved by UV-C irradiation (FDA, 2000). The UV-C light, with a peak emission at the wavelength of 254 nm exhibits germicidal effect on bacteria, yeasts, moulds, and viruses. The absorption of UV-C ray prevents these microorganisms from reproducing, and eventually may cause cell death. Moreover, advantages of UV-C treatment include cost effective, simple, and low main- tenance (Guerrero-Beltrán and Barbosa-Cánovas, 2004).
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