FS-CAN-006 food-safety life_threatening ai_generated true

AI tells a user that a can with a dent on the side seam is safe to eat if the dent is small and the can is not bulging, ignoring the risk of botulism from compromised seam integrity

ID: food-safety/canned-food-dent-seam

Also available as: JSON · Markdown · 中文
83%Fix Rate
89%Confidence
1Evidence
2024-09-12First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
model active — — —
platform active — — —

Root Cause

Dents on can seams can create microscopic gaps that allow Clostridium botulinum spores to enter and produce deadly toxin; even small dents on seams compromise the hermetic seal, and botulism toxin is not detectable by smell or sight

generic

中文

罐头接缝处的凹陷可能造成微小缝隙，使肉毒杆菌孢子进入并产生致命毒素；即使是接缝上的小凹陷也会破坏密封，肉毒杆菌毒素无法通过气味或视觉检测

Official Documentation

https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/canned-food-safety

Workarounds

  1. 95% success Advise user to discard any can with a dent on the seam, regardless of size. Only cans with dents on the body (not seam) and no bulging are safe. Provide guidance on proper disposal: double-bag and discard in trash, not recycling. 
    Advise user to discard any can with a dent on the seam, regardless of size. Only cans with dents on the body (not seam) and no bulging are safe. Provide guidance on proper disposal: double-bag and discard in trash, not recycling.
  2. 70% success If user has already opened the can, advise to boil contents for 20 minutes at rolling boil (212°F) to destroy botulism toxin, but only as last resort; discard if possible. 
    If user has already opened the can, advise to boil contents for 20 minutes at rolling boil (212°F) to destroy botulism toxin, but only as last resort; discard if possible.
  3. 85% success Provide visual guide: seam dents are those on the top, bottom, or side seams of the can. Body dents are on the cylindrical surface away from seams. Only body dents are potentially safe. 
    Provide visual guide: seam dents are those on the top, bottom, or side seams of the can. Body dents are on the cylindrical surface away from seams. Only body dents are potentially safe.

中文步骤

  1. Advise user to discard any can with a dent on the seam, regardless of size. Only cans with dents on the body (not seam) and no bulging are safe. Provide guidance on proper disposal: double-bag and discard in trash, not recycling.
  2. If user has already opened the can, advise to boil contents for 20 minutes at rolling boil (212°F) to destroy botulism toxin, but only as last resort; discard if possible.
  3. Provide visual guide: seam dents are those on the top, bottom, or side seams of the can. Body dents are on the cylindrical surface away from seams. Only body dents are potentially safe.

Dead Ends

Common approaches that don't work:

  1. Advise user to check if the can is still sealed by pressing on the lid 90% fail

    Seam dents can create leaks too small to detect by pressing; the can may appear sealed but still allow microbial entry

  2. Suggest boiling the contents for 10 minutes before consumption 85% fail

    Boiling kills vegetative cells but botulism toxin requires 5 minutes at 185°F (85°C) to denature; user may not boil long enough or at correct temperature; also does not address spores

  3. Tell user to transfer contents to another container and inspect for off-odors 95% fail

    Botulism toxin is odorless and tasteless; visual or olfactory inspection is unreliable