3.2. Challenge test with L. innocua
The number of L. innocua in overnight culture was
2.03109 cfu/ml. Cold smoked salmon was spiked with 104 dilution
of overnight culture and the final number of L. innocua in the
spiked samples was 4.5 103 cfu/g. Increasing the pressure from
400 MPa to 900 MPa had a significant effect on the reduction, from
>110 cfu/g to