Cooked beef products must achieve a specified lethality during cooking and stabilization during cooling. Which option correctly states these requirements?

• A. 6.5-log reduction in Salmonella during cooking; no more than 1.0-log growth of C. perfringens and zero growth of C. botulinum during cooling
• B. 7.0-log reduction in Salmonella; no growth of C. botulinum; no limit for C. perfringens
• C. 6.0-log reduction in Salmonella; no growth of any organism
• D. 5.0-log reduction in E. coli O157:H7; unlimited growth of C. perfringens

Answer: (A)

Cooking beef products is evaluated by two safety goals: kill the primary pathogen during cooking and prevent harmful growth during cooling. The required lethality targets Salmonella, with a 6.5-log reduction during cooking. This level of reduction significantly lowers the chance of Salmonella surviving the process. During cooling, the focus shifts to stabilization: you must prevent any growth of Clostridium botulinum, because botulinum toxin is extremely dangerous, and limit growth of Clostridium perfringens to no more than about 1 log. This combination—6.5-log Salmonella reduction during cooking, zero growth of C. botulinum, and at most 1-log growth of C. perfringens during cooling—best matches the safety standards for cooked beef products.

Others falter because they either propose the wrong Salmonella reduction level or ignore the specific growth limits during cooling (for example, claiming no growth of any organism or allowing unlimited growth of C. perfringens), which aren’t consistent with the established requirements.