The canning process requires the cans to be pressure heated. This sterilises the contents.
When canning, the pH does not kill botulism. Rather, a pH less than 4.6 is needed to prevent botulism from growing. If you are canning foods with a pH at or over 4.6, a pressure canner is needed to completely kill botulism.
Ecoli is a bacteria from cow manure that is found on fresh produce sometimes. It is best to wash produce in vinegar to kill ecoli. It makes you deadly sick and can kill you.
Because it's an acid.
There is no air or heat in the can.
The principle objective of canning is to kill microorganisms that may be harmful to people or to food quality.
i will slap you
Ecoli. with out Ecoli in our digestive system, we would not be able to process our food the right way. They help us live, we give them a home. this is not to say that Ecoli is harmless. It will kill you if it ends up in the wrong part of your body; but most of the time it just chills in the large intestine.
The only rule is use a pressure canner.
Many foods darken after cooking. The higher pressure and temperature of pressure cooking can darken them.
You can reuse the canning jars but you would need to buy replacement seals. Most grocery stores carry them.
to keep excess air out of the can