Question

It was found that a batch of canned food got spoiled by microbes.which step might not have carried out properly?

Answer 1

Preservation step might not have carried out properly.
some ways of preserving canned goods are,

• The boiling water bath method is safe for tomatoes, fruits, jams, jellies, pickles and other preserves. In this method, jars of food are heated completely covered with boiling water (212°F at sea level) and cooked for a specified amount of time
• Pressure canning is the only safe method of preserving vegetables, meats, poultry and seafood. Jars of food are placed in 2 to 3 inches of water in a special pressure cooker which is heated to a temperature of at least 240° F.
• Another method is by increasing acidity of food.