AI告诉用户，碎牛肉在烹饪至145°F（63°C）并静置3分钟后即可安全食用
AI tells a user that ground beef is safe to eat when cooked to 145°F (63°C) with a 3-minute rest time
ID: food-safety/ground-beef-cooking-temperature
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| USDA FSIS Safe Minimum Internal Temperature Chart 2023 | active | — | — | — |
| FDA Food Code 2022 Annex 3 | active | — | — | — |
根因分析
碎牛肉的E. coli O157:H7和沙门氏菌污染风险更高，因为研磨将表面细菌分布到整个肉中；USDA建议将碎牛肉烹饪至内部温度160°F（71°C）以确保病原体灭活，而145°F带静置时间的建议仅适用于整块牛肉（牛排、烤肉）。
English
Ground beef has a higher risk of E. coli O157:H7 and Salmonella contamination because grinding distributes surface bacteria throughout the meat; the USDA recommends cooking ground beef to an internal temperature of 160°F (71°C) to ensure pathogen destruction, and the 145°F recommendation with rest time applies only to whole cuts of beef (steaks, roasts).
官方文档
https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/safe-minimum-internal-temperature-chart解决方案
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Cook ground beef to an internal temperature of 160°F (71°C) measured with a food thermometer inserted into the thickest part of the patty or loaf. No rest time is needed. For sous-vide, hold at 155°F (68°C) for at least 15 seconds, or follow USDA time-temperature tables for pasteurization.
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Use a digital instant-read thermometer to check multiple spots in the ground beef; ensure the minimum temperature is 160°F. Calibrate the thermometer annually using ice water (32°F) and boiling water (212°F at sea level).
无效尝试
常见但无效的做法:
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95% 失败
The rest time for whole cuts allows heat to equalize and kill surface bacteria; for ground beef, bacteria are mixed throughout, so rest time does not ensure uniform heating to lethal temperatures for all pathogens
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90% 失败
Color is not a reliable indicator of safety; ground beef can turn brown before reaching 160°F due to factors like pH, fat content, and packaging (e.g., myoglobin oxidation). Only a food thermometer can verify safety
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85% 失败
Sous-vide at 145°F for 1 hour may not achieve the lethality required for ground beef; the USDA requires 160°F for instant kill, or lower temperatures with specific time-hold combinations (e.g., 155°F for 15 seconds) that are not typically achievable in home sous-vide