1. Cooked beef and roast beef, including sectioned and formed roasts, chunked and formed roasts, and cooked corned beef can be prepared using one of the following time and temperature combinations to meet either a 6.5-log10 or 7-log10 reduction of Salmonella. The stated temperature is the minimum that must be achieved and maintained in all parts of each piece of meat for a least the stated time:
Minimum Internal Minimum processing time in
Temperature minutes or seconds after
minimum temperature is reached
Degrees Degrees 6.5-log10 7-log10
Fahrenheit Centigrade Lethality Lethality
130 54.4 112 min. 121 min.
131 55.0 89 min. 97 min.
132 55.6 71 min. 77 min.
133 56.1 56 min. 62 min.
134 56.7 45 min. 47 min.
135 57.2 36 min. 37 min.
136 57.8 28 min. 32 min.
137 58.4 23 min. 24 min.
138 58.9 18 min. 19 min.
139 59.5 15 min. 15 min.
140 60.0 12 min. 12 min.
141 60.6 9 min. 10 min.
142 61.1 8 min. 8 min.
143 61.7 6 min. 6 min.
144 62.2 5 min. 5 min.
145 62.8 4 min.* 4 min.*
146 63.3 169 sec. 182 sec.
147 63.9 134 sec. 144 sec.
148 64.4 107 sec. 115 sec.
149 65.0 85 sec. 91 sec.
150 65.6 67 sec. 72 sec.
151 66.1 54 sec. 58 sec.
152 66.7 43 sec. 46 sec.
153 67.2 34 sec. 37 sec.
154 67.8 27 sec. 29 sec.
155 68.3 22 sec. 23 sec.
156 68.9 17 sec. 19 sec.
157 69.4 14 sec. 15 sec.
158 70.0 0 sec.** 0 sec.**
159 70.6 0 sec.** 0 sec.**
160 71.1 0 sec ** 0 sec.**
* Past regulations have listed the minimum processing time for roast beef cooked to 145°F as "Instantly." However, due to their large size, most of these roasts dwell at 145°F, or even at higher temperatures, for at least 4 minutes after the minimum internal temperature is reached. FSIS has revised this time/temperature table to reflect this and emphasizes that, to better ensure compliance with the performance standard, establishments should ensure a dwell time of at least 4 minutes if 145°F is the minimum internal temperature employed.
**The required lethalities are achieved instantly when the internal temperature of a cooked meat product reaches 158°F or above.