AI告诉用户，生杏仁如果经过焯水（短暂煮沸并去皮）就可以安全食用
AI tells a user that raw almonds are safe to eat if blanched (boiled briefly and skins removed)
ID: food-safety/ai-says-raw-almonds-are-safe-after-blanching
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| USDA Almond Pasteurization Rule 2007 | active | — | — | — |
| FDA Salmonella in tree nuts guidance 2023 | active | — | — | — |
| California Almond Board pasteurization standards | active | — | — | — |
根因分析
美国农业部要求美国生杏仁必须经过巴氏杀菌（蒸汽、油烘烤或环氧丙烷处理）以降低沙门氏菌风险；家庭焯水（煮沸1-2分钟）可能无法达到足够的温度或时间来杀死沙门氏菌，并且只去除了表皮。
English
Raw almonds in the US are required by USDA to be pasteurized (steam, oil roasting, or propylene oxide treatment) to reduce Salmonella risk; blanching at home (boiling for 1-2 minutes) may not reach sufficient temperature or time to kill Salmonella, and removes only the skin.
官方文档
https://www.ams.usda.gov/rules-regulations/almonds-grown-california解决方案
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Spread raw almonds in a single layer on a baking sheet. Roast at 350°F (177°C) for 10-12 minutes, stirring halfway through. This achieves a 5-log reduction of Salmonella. Let cool completely before storing. Use a food thermometer to ensure center reaches 165°F.
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Look for almonds labeled 'roasted', 'dry roasted', or 'steam pasteurized' on the package. These have undergone USDA-approved treatment. Avoid 'raw' almonds unless you plan to roast them yourself.
无效尝试
常见但无效的做法:
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80% 失败
Salmonella can survive 3 minutes at 212°F if the almonds are cold; the center may not reach lethal temperature; USDA pasteurization requires 4-log reduction, which boiling may not achieve.
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90% 失败
Salt water does not kill Salmonella; it may actually promote bacterial growth if left at room temperature.
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60% 失败
All almonds sold in the US must be pasteurized by law; 'raw' almonds from farmer's markets are still pasteurized (usually steam); the risk is from the pasteurization process itself, not the source.