why does food in sealed containers spoil?

Question

Let’s say you hard boil an egg, disinfect a container, and put the egg in immediately after boiling (still in shell).

Several days later the egg will go bad, but why? Haven’t you already murdered the eggs microbes by boiling it, and the container’s microbes by disinfecting it?

Where does the bacteria or fungi come from to spoil the egg?

In: Biology

Answer 1

if the jar was not properly sterilized and sealed, bacteria can linger and eat the jar’s contents, causing spoiling and mold. proper prevention of spoilage includes sterilizing correctly and completely, and canning with a good seal.