Changes in the composition and properties of certain foods, as well as
development of food products to meet consumer demands relating to hea
lth, nutrition and convenience lead to concerns about the microbiologi
cal safety of such products. Concerns also arise from emergence or rec
ognition of the importance of certain microbial food pathogens or spoi
lage organisms, as well as from modifications in food processing, hand
ling, storage and preparation procedures. These facts necessitate cont
inuous reevaluation of factors involved in the control of microbial gr
owth in order to preserve foods and maintain their quality and safety.