The samples of apples, oranges, cucumbers and
tomatoes were collected from some border points with Jordan, Syria, Turkey, and Iran. Other samples were
also collected from local markets which were
imported from neighboring countries. Samples were
taken randomly and then 1 kg per vehicle 20 tons were
taken at different times, placed in plastic bags and
then brought to the laboratory and put in refrigerator
at 5 °C to be used later for extraction step.