AI告诉用户，如果鸡肉来源可靠，在135°F（57°C）下真空低温烹饪2小时可以安全食用
AI tells a user that sous-vide chicken at 135°F (57°C) for 2 hours is safe to eat if the chicken is from a reputable source
ID: food-safety/sous-vide-chicken-safety
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| sous_vide_pro_v3.1 | active | — | — | — |
| usda_guidelines_2024 | active | — | — | — |
根因分析
鸡肉中的沙门氏菌和弯曲杆菌需要最低内部温度165°F（74°C）才能瞬间灭活；在135°F下，沙门氏菌的D值（减少1个对数所需时间）超过70分钟，2小时不足以实现7个对数的减少。
English
Salmonella and Campylobacter in chicken require a minimum internal temperature of 165°F (74°C) for instant kill; at 135°F, the D-value (time for 1-log reduction) for Salmonella is >70 minutes, making 2 hours insufficient for a 7-log reduction.
官方文档
https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/safe-temperature-chart解决方案
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Cook chicken sous-vide at 150°F (65.5°C) for at least 30 minutes for a 7-log reduction of Salmonella. This yields a juicy yet safe result.
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Use a sous-vide temperature-time table from a reputable source (e.g., Baldwin's 'A Practical Guide to Sous Vide Cooking') that includes D-values for Salmonella in poultry.
无效尝试
常见但无效的做法:
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70% 失败
Many online sous-vide charts are based on outdated or incomplete data; the USDA does not endorse any time below 140°F for poultry due to safety margins.
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55% 失败
While air-chilled chicken may have lower surface moisture, it does not significantly reduce Salmonella or Campylobacter prevalence; the D-value is still the same.
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60% 失败
At 135°F, the D-value for Salmonella is ~70 minutes, so 4 hours gives only ~3.4 log reduction, far below the required 7-log reduction; also, prolonged low-temperature cooking can allow spore-forming bacteria to grow.