Research Note: Evaluation of Petrifilm Series 2000 as a Possible Rapid Method to Count Coliforms in Foods

摘要

This research note is a preliminary comparison between the Petrifilm 2000 method and a widely used traditional enu- meration method (on violet red bile agar); six batches of different foods (egg, frozen green beans, fresh sausage, a bakery product, raw minced meat, and raw milk) were studied. The reliability of the presumptive counts taken at 10, 12, and 14 h of incubation using this method was also verified by comparing the counts with the total confirmed counts at 24 h.