Twenty plant and animal food samples were collected from
different commercial stores. These samples were placed in a
sterilezed plastic bags not to be polluted and were moved to the
laboratory in special thermal containers to be tested.
The solid
samples were processed in the Digester to study each
sample separately , while the liquid samples were tested
immediately after being diluted.
After that they were studied with biochemical tests to identify the
type of germ that existed.
