Sapienic acid is a fatty acid commonly found on the skin and in the mucosa. Sapienic acid is active against Streptococcus sanguinis, Streptococcus mitis, and Fusobacterium nucleatum with MBC values of 31.3 μg/mL, 375.0 μg/mL and 93.8 μg/mL, respectively.
Vibralactone B shows antibacterial activity, it can inhibit significantly the growth of E. coli and Pseudomonas aeruginosa, with MBC values of 50 and 100 ug/mL, respectively.