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MPa, 3 min) ranch dressing during 2 wk of storage at 26 â¦C. Simi-. larly, no yeast colonies were recovered during the same storage pe-. riod from T. delbrueckii-inoculated dressing that was treated with. 400 or 600 MPa for 3 min; however, when ranch dressing was con-.
The FDA recommends against holding hot foods for more than 2 hours at room temperature, 50Â° F to 70Â° F (10Â° to 21Â° C), or over an hour when room temperature is 90Â° F (32Â° C) or higher because dangerous levels of bacteria can grow that quickly.