What does psuedomonas aeruginosa look like in gelatin test?

In a Gelatin test, Pseudomonas aeruginosa typically produces a positive result by liquefying the gelatin medium. This occurs due to the secretion of gelatinase, an enzyme that breaks down gelatin into smaller peptides and amino acids. As a result, the originally solid gelatin becomes liquid, indicating the presence of Pseudomonas aeruginosa. The liquefaction can be observed as a clear, fluid region in the medium.