My experimental setup was designed to test volatile emission from the spices. After obtaining agar dishes, E. coli, and sterile swabs from CSUF, I carefully streaked E. coli on all of my dishes. Then I turned them upside down and I applied 1/4 tsp. of spice on the lid. I used all of the following spices: cinnamon, garlic, mustard, black pepper, coriander, lemon juice, and chilli powder. Then I left my dish at 27 degrees Celsius for 4 days. I had three replicates.
The results of my experiment show that not all of the seven spices used were effective. Complete Inhibition- coriander 100%. Partial Inhibition- mustard 83%, cinnamon 67%, lemon juice 67%, black pepper 17%, and garlic 17%. None- chilli powder 0%.
According to my results, spices do have antibacterial properties, but not all of them. This is potentially beneficial in tropical countries that have ineffective food storage methods.
This project is to see whether spices have antibacterial properties.
Science Fair Project done By Pallavi Bekal