The PL
induced microbial reduction changed over the storage period and
from the day 7 to 15 the highest level of decontamination was
observed for RPR samples exposed to 30 J cm 2. Initially the
decontamination of RPR treated at 3 J cm 2 was significantly lower
(around 0.8 log CFU g 1 on d4 and d7) when compared with two
other treatments (10 and 30 J cm 2). However on day 15 the
reduction of aerobic flora was of the same level for samples