Antibacterial Activity Of Watercress (Nasturtium Officinale) Ethanol Extract Against Staphylococcus Aureus and Pseudomonas Aeruginosa Bacteria (Supervised by SABRI SUDIRMAN). Bacteria are microorganisms that can cause quality degradation in fishery products and cause disease in humans. Borax and formalin are commonly used antibacterial agents, but they have a negative impact on health. Polyphen…