Possible procedures
• Sample preparation. Prepare an extract by grinding the appropriate tissue in a few milliliters of solvent in a mortar and pestle. Possible solvents are sterile water; methyl alcohol, ethyl alcohol, and acetone.
• Screening: antibacterial or antifungal??
• Serial dilutions
* MIC
* Effect on bacterial/fungal growth in food
• Lysozyme
* Bacteriocins (AMPs)
• Isolating active compounds
• Population growth

Plants to choose from: We'll need to go on a walk to find these:
Native Rhamnus Salt marsh natives Grindelia stricta Spartina foliosa Distichlis spicata Salicornia depressa Field guides 1 | 2	Invasives Cytisus spp. Delairea odorata Pyracantha Fungi Farmed mushrooms (try a Japanese market) Wild on campus…if it ever rains again

Cultures available:
Aspergillus sp.
Escherichia coli
Micrococcus luteus
Salmonella enterica
Shigella sonnei
Staphylococcus aureus
Saccharomyces cerevisiae
Penicillium sp.
Pseudomonas aeruginosa
Streptococcus pneumoniae
Streptococcus pyogenes
Streptococcus mutans

References to get started
1. Aldridge, S. “Marine Bioprospecting for Novel Drug.” Genetic Engineering News 26(21):00-00, Dec 1 2006.
2. Akinjogunla et al. "Antimicrobial potential of Nymphaea lotus (Nymphaeaceae) against wound pathogens. " Journal of Medicinal Plants Research3(3):138-141, 2009.
3. Carlson, J. J., H. G. Douglas, and J. Robertson.. “Antibacterial substances separated from plants.” Journal of Bacteriology 55(2):241-248, 1948.
4. Cowan, M. M. “Plant Products as Antimicrobial Agents.” Clinical Microbiology Reviews 12(4); 564-582, 1999. pdf
5.Friedman M, Henika PR, Levin CE, Mandrell RE. “Antibacterial activities of plant essential oils and their components against Escherichia coli O157:H7 and Salmonella enterica in apple juice.” Journal of Agricultural Food Chemistry 52(19):6042-6048, 2004..
6. Levy, S. R. "The challenge of antibiotic resistance." Scientific American March 1998 pp. 48-53.