Evaluating Environmental Monitoring Protocols for spp. and in Frozen Food Manufacturing Facilities.

Food processors face serious challenges due to contamination. Environmental monitoring is used to control from the processing environment. Although frozen foods do not support the growth of the moist and cold conditions in frozen food production environments are favorable for growth of . The purpose of the study was to determine the current state of awareness and practices applied across a variety of frozen food facilities related to environmental monitoring for . A survey tool was created to elicit information on existing environmental monitoring programs within the frozen food industry. The topics included cleaning and sanitizing applications and frequency, microbiological testing, and environmental areas of concern. The survey was reviewed by academic and industry experts with knowledge of microbiology and frozen food processing and was field tested by industry personnel with extensive knowledge of environmental monitoring. The survey was distributed and analyzed electronically via Qualtrics among 150 frozen food contacts. Data were gathered anonymously with a response rate of 31% ( = 46). The survey indicated that facilities are more likely to test for spp. in environmental monitoring zones 2 to 4 (nonfood contact areas) on a weekly basis. The major areas of concern in facilities for finding -positive results are floors, walls, and drains. At the time of the survey, few facilities incorporated active raw material and finished product testing for ; instead, programs emphasized the need to identify presence of in the processing environment and mitigate potential for product contamination. Recognition of environmental monitoring as a key component of a comprehensive food safety plan was evident, along with an industry focus to further improve and develop verification programs to reduce prevalence of in frozen food processing environments.