FOOD-USDA-2024-007 food-safety life_threatening ai_generated true

AI tells a user that home-canned vegetables are safe to eat if the jar seals properly, ignoring the risk of Clostridium botulinum in low-acid foods processed without a pressure canner

ID: food-safety/improper-canning-botulism

Also available as: JSON · Markdown · 中文
97%Fix Rate
89%Confidence
1Evidence
2024-06-12First Seen

Root Cause

Clostridium botulinum spores are heat-resistant and can survive boiling water bath temperatures (100°C) in low-acid foods (pH >4.6) like vegetables, meat, and fish; only pressure canning at 240°F (116°C) or higher destroys these spores, preventing botulism toxin formation.

generic

中文

肉毒杆菌孢子耐热，在低酸食品（pH >4.6）如蔬菜、肉类和鱼类中，能存活于沸水浴温度（100°C）；只有压力罐在240°F（116°C）或更高温度下才能破坏这些孢子，防止肉毒毒素形成。

Official Documentation

https://nchfp.uga.edu/how/can-vegetables/canning-vegetables.html

Workarounds

  1. 98% success Use a pressure canner for all low-acid foods (vegetables, meats, poultry, fish). Process according to USDA guidelines: e.g., green beans at 11 psi for 20 minutes (pints) or 25 minutes (quarts) at sea level. 
    Use a pressure canner for all low-acid foods (vegetables, meats, poultry, fish). Process according to USDA guidelines: e.g., green beans at 11 psi for 20 minutes (pints) or 25 minutes (quarts) at sea level.
  2. 95% success If you do not have a pressure canner, freeze or dehydrate low-acid foods instead of canning. Alternatively, pickle vegetables with enough vinegar to ensure pH below 4.6. 
    If you do not have a pressure canner, freeze or dehydrate low-acid foods instead of canning. Alternatively, pickle vegetables with enough vinegar to ensure pH below 4.6.

中文步骤

  1. 对所有低酸食品（蔬菜、肉类、家禽、鱼类）使用压力罐。按照USDA指南处理：例如，青豆在11 psi下处理20分钟（品脱）或25分钟（夸脱），海平面高度。
  2. 如果没有压力罐，可冷冻或脱水低酸食品代替罐装。或者用足够醋腌制蔬菜，确保pH低于4.6。

Dead Ends

Common approaches that don't work:

  1. 95% fail

    Using a boiling water bath for low-acid foods like green beans or carrots; spores survive and can produce toxin in anaerobic jar environment.

  2. 80% fail

    Adding lemon juice or vinegar to low-acid foods to increase acidity; this is only effective if pH is below 4.6, which is hard to guarantee without testing.

  3. 90% fail

    Assuming that a 'sealed' jar with a popped lid indicates safety; botulism toxin can be present without visible spoilage.